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A tertiary (3°) alkyl radical is an alkyl radical in which the carbon atom bearing the unpaired electron is bonded to three carbon atoms.

hence, option (a) is correct.

but answer is C

tertiary radicals r both a & c

(a) 2,3,4- tri methyl 4-ethyl hexane(b) 3-methyl ,4-ethyl pentane

just you read the concept now-for any carbon atom in hydrocarbon chain,2π bonds- sp hybridised3πbonds-sp24π bonds-sp3

option 3. minerals, organic matter, air and water.

Inthermodynamics, theGibbs free energy(IUPACrecommended name:Gibbs energyorGibbs function; also known asfree enthalpy to distinguish it fromHelmholtz free energy) is athermodynamic potentialthat can be used to calculate themaximumof reversibleworkthat may be performed by athermodynamic systemat a constanttemperatureandpressure(isothermal,isobaric). The Gibbs free energy (ΔGº = ΔHº-TΔSº) (JinSI units) is themaximumamount of non-expansion work that can be extracted from athermodynamically closed system(one that can exchange heat and work with its surroundings, but not matter); this maximum can be attained only in a completelyreversible process. When a system transforms reversibly from an initial state to a final state, the decrease in Gibbs free energy equals the work done by the system to its surroundings, minus the work of thepressureforces.

The Gibbs energy (also referred to asG) is also the thermodynamic potential that is minimized when a system reacheschemical equilibriumat constant pressure and temperature. Its derivative with respect to the reaction coordinate of the system vanishes at the equilibrium point. As such, a reduction inGis a necessary condition for the spontaneity of processes at constantpressureandtemperature.

Enthalpy. ... When a substance changes at constant pressure,enthalpytells how much heat and work was added or removed from the substance.Enthalpyis similar to energy, but not the same. When a substance grows or shrinks, energy is used up or released.

option abromine + benzene

bromine+ccl⁴ answer is D

option (b) is correct

option B is the correct answer

option (b) is the right answer

Option B is the correct answer

option B is the correct answer

By markonikov rule bromine should attach at the carbon which has more +I effect

so , 2 should be the correct answer.

but and is given as 4

i don't think 4 is correct.. see the example below.. if it would have been 4, the above 4 it should he 1 because 1° is also same.. as 4 having extra ethyl group..

Correct option(d)ΔGmix= 0 Explanation : For an ideal solution,

PoBenzene = 50.51 mm HgPoNaphthalene = 50.51 mm HgMass of Benzene = 80 gMass of Toluene = 100 gMolar mass of benzene(C6H6) = 6 × 12 + 6 × 1 = 78 g mol - 1Molar mass of toluene(C6H5CH3) = 6 × 12 + 5 × 1 + 12 + 3 × 1 = 92 g mol – 1Use the formula

Number of moles of benzene = 80 / 78 = 1.026 molNumber of mole of toluene = 100 / 9 2 = 1.087 molMole fraction of benzene, XBenzene = 1.0226 / (1.026 + 1.087)= 1.026/ 2.113 = 0.486SimilarlyMole fraction of toluene, X Toluene = 1 - XBenzene = 1 - 0.486 = 0.514Use the formula if Henry lawPA= poA× XAPartial vapour pressure of benzene, PBenzene = poBenzene × XBenzenePBenzene=0.487 × 50.71 = 24.645 mm HgSimilarlyPartial pressure of Toluene, P toluene = 0.514 × 32.06 = 16.48 mmHg

Mole fraction of benzene = 24.645 /(24.645 + 16.48 )= 24.645/41.123 = 0.60

An azeotrope or a constant boiling point mixture is a mixture of two or more liquids whose proportions cannot be altered or changed by simple distillation.

Thankyou

water boiling

The answer is D-Water boiling

his question is a little like asking why parallel lines don’t meet: Because if they met, they wouldn’t be called parallel.

‘Ideal solutions’, better ‘ideal mixtures of liquids’, are mixtures where the intermolecular forces in the liquid phase are exactly the same between molecules of the same substance as between molecules of different substances.

They don’t exist in reality, but are approximated if the substances are chemically very similar, like for example 1-butanol and 2-butanol.

An ideal mixture would obey Raoult’s law ( → Raoult's law - Wikipedia), which, in simple language, states that the Total Vapour Pressure of the mixture is a rectilinear function of the concentration ratio of the ingredients.

Deviation from ‘ideality’ means deviation from the values corresponding to Raoult’s law. If the deviation is such that minima or maxima in the vapour pressure of the mixture are formed, then the mixture is an azeotrope at those concentrations.

Food can be stored in plastic containers(a)Plastics are non-reactive.(b) Plastics are light and strong.Plastics are durable.

The valency of an element (how many outer electrons are in an atom of the element) was treated as one of the basic properties of classifying elements for many reasons. First of all, it determined the chemical reactivity of an element to other elements. For example, fluorine is very reactive with most elements mostly due to its need to have one more valence (outer) electron needed in complete its shell (outer electron layer) in order to achieve stability (fluorine has 7 valence electrons and needs 8 to achieve stability to not react chemically anymore). It is so reactive that it can cause respiratory irritation if inhaled and even death if a person inhaled a lot of it. In comparison, carbon is less reactive than fluorine due to its need for 4 valence electrons to complete its shell. It is so unreactive compared to fluorine that a person could ingest pure carbon (in the form of graphite or charcoal) without negative consequences. The valency of an element also determines the nature of the bonds it would have with other atoms. In fluorine, due to its high valency, it forms one ionic bond (fluorine steals electrons from metals and the metal and fluorine are attracted to each other due to an imbalance of charge between them) with metals and a nonpolar covalent bond (atoms share electrons without creating a dipole (like magnetic poles for atoms/molecules)) with most nonmetals. In comparison, carbon can form between 1 chemical bond (as in the case of carbon monoxide) to a maximum of 4 chemical bonds (as seen in methane). In carbon monoxide (CO), the bond type is a polar covalent bond (atoms share electrons with one holding more electrons than the other, creating a positive charge on one end (the carbon atom)and negative charge on the other (the oxygen atom), making a dipole). In methane, however, the bond type between hydrogen and carbon is a nonpolar covalent bond due to the symmetry of the methane molecule (shape of molecules is partially due to valency as well because of electron orbitals (an area where an electron is likely to be))

then divide by charge of electron to find the no of charged particles

then total no of atoms is given by no of moles of C x avogadro's number

no of moles is 1/12

I hope this out line helps.

Nagpur is famous for oranges.

TheHeisenberg uncertainty principle statesthat it is impossible to know simultaneously the exact position and momentum of a particle. That is, the more exactly the position is determined, the less known the momentum, and vice versa.Mathematically we describe the uncertainty principle as the following, where `x' is position and `p' is momentum so, Δx is uncertainty in position and Δp is uncertainty in momentum then there product must be a constant as:

Δx. Δp = h/2π

Isomers are two or more compounds with the same formula but a different arrangement of atoms in the molecule and different properties.Two isomers of butane are:

Balmer series end with n = 2

so, 1/4341×10^-7 = 109678(1/2²-1/n²)=> 0.021 = 1/4 -1/n²=> 0.021 = 0.25 -1/n²=> 1/n² = 0.229=> n² = 4.33=> n > √4.33 > 2

answer is n = 3

option a is the answer.I3-- Triiodide ion. I has 7 valence electrons plus 1 for each I-I single bond and one for the charge.Total = 10 electrons,fivepairs.

this is the answer

this is the answer

1. multiply nitric acid by 2 and water molecule by 22. multiply sodium hydroxide by 2 and water molecule by 23. it is already balanced 4. multiply hydrochloric acid by 2.

c) AgNo3 ➕ NaCl➡️AgCl ➕ NaNo3

In Mendeleev periodic table, the position of isotopes wasn't justified. whereas in modern periodic table, classification is based on atomic number and not on atomic mass number. therefore position of isotopes is justified.

(69.2/100)×62.93 + (30.8/100)×64.93

=(43.54)+(19.99)=(63.53)amu

This is atomic mass of naturally occuring sample of copper

cotton is a natural fabric as it is obtained form plants.

cotton is a natural fabri

on the basis of vsepr theory,no. of electron pairs=(V+M-C)÷2Where V is the no. of valence electrons in central atomM is the no. of monovalent atomsC is the numerical charge on the whole molecule

so, in this case,no. of valence electrons in central atom(Br)=7the no. of monovalent atoms(F)=3charge=0

thus, no. of electron pairs=(7+3-0)÷2=5in the atom Br is bonded to 3 atoms of fluorine.

hence no. of bond pairs=3no. of lone pairs=2

This implies that BrF3 will have a trigonal bipyramidal geometry and a T-shape.T refers to the english alphabet "T"

HOPE THIS HELPS!! :-)

Li3N

has 7 electrons and 10 protons.

Explanation:

Nitrogen has a valence electron of five electrons. when it binds with Lithium atom it receives 3 electrons via electron transfer. Thus nitride ion has a negative 3 charged because it receives 3 electrons from lithium

X -> Sulphur dioxide (SO2)Y-> Sulphurous acid

SO2 + H2O-> H2SO3

Blue litmus, when dipped in sulphurous acid, turns into red litmus

normality of H2SO4 is M/v.f = (M/2)*2 = 1/4 normality of HNO3 is 1/5 normality of HCl is 1/5

so, using formula

N1V1 + N2V2 +N3V3 = NfVf

=> 100*1/4+200*1/5+100*1/5 = Nf*(100+200+100)

=> (25+40+20) = Nf*(400)=> Nf = 85/400 = 0.2125N

you can prevent the rusting of iron and silver by paint on them it helps the iron or silver to not come in direct contact with air water and will not get corroaded

by paint them....by this oxidation does not occur on surface ...and no corrosion happen.

In order to represent the shape of the molecule atleast three atom and two bonded pair are required.Valence shell electron pair repulsion (VSEPR)theoryis a model used to predict the geometry of individual molecules from the number of electron pairs surrounding their central atoms.In order to represent the shape of the molecule atleast three atom and two bonded pair are required. Valence shell electron pair repulsion (VSEPR)theoryis a model used to predict the geometry of individual molecules from the number of electron pairs surrounding their central atoms.The main postulates of VSEPR theory are(1) For polyatomic molecules containing 3 or more atoms, one of the atoms is called the central atom to which other atoms are linked.(2) The geometry of a molecule depends upon the total number of valence shell electron pairs (bonded or not bonded) present around the central atom and their repulsion due to relative sizes and shapes.(3) If the central atom is surrounded by bond pairs only. It gives the symmetrical shape to the molecule.(4) If the central atom is surrounded by lone pairs (lp) as well as bond pairs (bp) of then the molecule has a distorted geometry.(5) The relative order of repulsion between electron pairs is as follows: lp – lp > lp – bp > bp – bp.

Black coating on silver coins is due to silver sulphide(Ag2s).

2 Ag(s) + H2S(g) ----- Ag2S(s) + H2(g).Green Coating on copper coins is due to copper carbonate and copper hydroxide.

2 Cu + H2O + CO2 + O2 ------ > Cu(OH)2 + CuCO3

Chemical formula of washing soda is Na2CO3.10 H2OWhen sodium carbonate crystals are exposed to air They lose water of crystallization and turn to white powder. This process of loosing water of crystallization when exposed to air is called efflorescence.

Na2CO3.10H2O → Na2CO3+ 10 H2O

1.Silver forms silversulphate when in comes in contact with atmospheric gases. and Cu forms CuO when it comes in conatct with atmospheric gases therefore looses their shiness.

2. because tarmarind being acidic in nature removes the impurities from the above surface of the copper vessel.

3.because Al forms aluminium oxide which stops the Al metal from getting further corroded

Like my answer if you find it useful!

aluminium does not oxidise as quickly as its reactivity is high,once a thin lauer of al2o3 formed on the surface it forms abarrier to oxygen and water and so prevents further corrosion.

Anormalized wavefuntion means that the probability that the particle is found in the considered domain is equal to 1 and thus the integral of the square of thewave functionin the domain is equal to 1 (remind that thewave functionis afunctionof complex variable) as previously written by Matùs Dubecký.…

These eigenfunctionscorresponding to different eigen values areorthogonal( perpendicular ) to each other. When they are normalized they behave as unit vectors in infinite dimensional linear vector space. A givenwave functionwill have different representations in different basis set.

An orbital is a mathematicalfunctioncalled awave functionthat describes an electron in an atom. ...Radial wave functionsfor a given atom depend only upon the distance, r from the nucleus.Angular wave functionsdepend only upon direction, and, in effect, describe the shape of an orbital.

An indicator is a substance which detects the presence of an acid or base.Example :A few common indicators used in the laboratory are:1. Litmus Paper2. Methyl Orange

Copper turns greenbecause of chemical reactions with the elements. Just as iron that is left unprotected in open air will corrode and form a flaky orange-red outer layer,copperthat is exposed to the elements undergoes a series of chemical reactions that give the shiny metal a palegreenouter layer called a patina.

Copper turns greenbecause of chemical reactions with the elements. Just as iron that is left unprotected in open air will corrode and form a flaky orange-red outer layer,copperthat is exposed to the elements undergoes a series of chemical reactions that give the shiny metal a pale greenouter layer called a patina.