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Pyrolysis is the thermal decomposition of materials at elevated temperatures in an inert atmosphere. It involves the change of chemical composition and is irreversible. The word is coined from the Greek-derived elements pyro "fire" and lysis "separating".

Pyrolysisis thethermaldecompositionof materials at elevated temperatures in an inert atmosphere. It involves the change ofchemical compositionand is irreversible.

pyrolysis is the chemical which is use for destroy garbage at high temperature

THERMOCHEMICAL REACTIONS :-

These reactions involve absorption or evolution of heat.

They can take place even in absence oflighti.e. dark.

Temperature has significant effect on the rate of a thermochemical reaction.

The free energy change ∆G of a thermochemical reaction is always negative.

They are accelerated by the presence of a catalyst.

PHOTOCHEMICAL REACTIONS :-

These reactions involve absorption of light.

The presence of light is the primary requisite for the reaction to take place.

Temperature has very little effect on the rate of a photochemical reaction. Instead, the intensity of light has a marked effect on the rate of a photochemical reaction.

The free energy change ∆G of a photochemical reaction may not be negative.

Some of these are initiated by the presence of a photosensitizer. However a photosensitizer acts in a different way than a catalyst.

right

thankss rupak ji

When water is added to acid acid droplets spread all around the container hence it's recommended to add acid to water which will spill water all over not acid.

Photochemical reaction, a chemicalreactioninitiated by the absorption of energy in the form of light. The consequence of molecules' absorbing light is the creation of transient excited states whose chemical and physical properties differ greatly from the original molecules

Photochemical chlorination of alkane take place by free radical mechanism which are possible by Homolysis of C - C bond.

Saponification:Ester of higher fatty acids gives sodium salt of higher fatty acid; when heated with glycerol and sodium hydroxide. Sodium salts of higher fatty acid are known as soaps. This reaction is called saponification (soap making).

Reaction of ethanoic acid with sodium carbonate and sodium bicarbonate:

Ethanoic acid gives sodium acetate, water and carbon dioxide when reacts with sodium carbonate or sodium bicarbonate (sodium hydrogen carbonate).

Reverse of Esterification is Saponification

Bit no 1 is the answer

hydrogenation is the process in which the saturated fats are converted to unsaturated fats. Thus leading to production of oil from ghee

The lanthanide contraction is the greater-than-expected decrease in ionic radii of the elements in the lanthanide series from atomic number 57, lanthanum, to 71, lutetium, which results in smaller than otherwise expected ionic radii for the subsequent elements starting with 72, hafnium.

Ans :- THEHALOGENATION OF BENZENE. This page gives you the facts and a simple, uncluttered mechanism for the electrophilic substitution reaction betweenbenzeneandchlorineor bromine in the presence of a catalyst such as aluminium chloride or iron.

If a mixture of methane and chlorine is exposed to a flame, it explodes - producing carbon and hydrogen chloride. This is not a very useful reaction! The reaction we are going to explore is a more gentle one between methane and chlorine in the presence of ultraviolet light - typically sunlight. This is a good example of a photochemical reaction - a reaction brought about by light.

CH4+Cl2→CH3Cl+HClCH4+Cl2→CH3Cl+HClThe organic product is chloromethane. One of the hydrogen atoms in the methane has been replaced by a chlorine atom, so this is a substitution reaction. However, the reaction doesn't stop there, and all the hydrogens in the methane can in turn be replaced by chlorine atoms. Multiple substitution is dealt with on a separate page, and you will find a link to that at the bottom of this page.

The mechanismThe mechanism involves a chain reaction. During a chain reaction, for every reactive species you start off with, a new one is generated at the end - and this keeps the process going. The over-all process is known as free radical substitution, or as a free radical chain reaction.

Chain initiation: The chain is initiated (started) by UV light breaking a chlorine molecule into free radicals.Cl2 →→ 2Cl

Chain propagation reactions : These are the reactions which keep the chain going.CH4 + Cl→→CH3 + HCl

CH3 + Cl2→→CH3Cl + Cl

Chain termination reactions: These are reactions which remove free radicals from the system without replacing them by new ones.2Cl→→Cl2

CH3 + Cl →→ CH3C l

CH3 + CH3→→CH3CH3

Chlorination of methaneis a free radical reaction. During the process if two methyl radicals collapse they form ethane. So,ethaneis alsoformedas a by product.

The mechanism includes:1)Chain initiation: The chain is initiated (started) by UV light breaking a chlorine molecule into free radicals.2)Chain propagation reactions : These are the reactions which keep the chain going.3)Chain termination reactions: These are reactions which remove free radicals from the system without replacing them by new ones.

In chemistry, the term alkali refers to salts (ionic compounds) containing alkali and alkaline earth metal elements that accept a hydrogen ion in solution. Alkaline bases are best known as bases that dissolve in water. Alkali metals react vigorously with water, producing hydroxides and releasing hydrogen. The reaction with air covers the surface of the solution with oxides. In nature, ionic compounds (salts) contain alkali metals but never in a pure state.

Market economies promote disparities in income distribution even when resources are optimally used. ... Products on which the returns are high get more resources. It means that the more goods are being produced for the rich or elite class of the society. It means poor sections are not being able to get the needed products.

sorry I didn't know

Irregular shaped fragments ofzincresulting from the pouring of moltenzincinto water.

did you know Malayalam

First answer is:-NAOH + Zn = Na2ZnO2 + H2This hydrogen gas can be tested by putting matchstick over the solution. The burning matchstick will extinguish by a pop sound.

Then, when zn metal reacts with a dilute strong acid such as hcl, it will give zinc chloride and hydrogen gas again. Hcl + Zn= ZnCl2 + H2

(a) Hissing sound will be produced in this reaction

(b) The china dish will gradually become hot because this is an exothermic reaction.

Chloroform is unstable and is combined with a variety of stabilizers to enhance product shelf life like ether, ethanol. but ethanol must be added to chloroform at relatively high concentrations (~1%) in order to be effective. This will increase the polarity of the solvent and potentially impact certain applications.

First, we can test Solution 1. We know that Sodium Hydroxide is a strongbase. If we test acids on blue litmus paper, they will turn red. If we test bases on red litmus paper, they will turn blue. So, you can test all the of the solutions- water, sodium hydroxide and hydrochloric acid with blue and red litmus paper. HCl, Hydrochloric acid is an acid, so it will turn blue litmus paper red. It will not turn red litmus blue. The acids will turn blue litmus paper red. The bases will turn red litmus paper blue. Only water is a neutral liquid, which will not turn blue litmus paper red or red litmus paper blue. It will not change the colour of it. Thus, if you test all the solutions with blue and red litmus paper, you will know which solution is water. Water is the only one which is neutral. It is the only solution which cannot change the colour of any litmus paper. Thus, you can identify it very easily.

When sodium hydroxide reacts with granulated zinc it produces sodium zincate + hydrogen gas

Reaction is as follows:-

2NaOh+Zn----->(Heating) Na2ZnO2+H2

When the gas that is hydrogen is bubbled through soap solution and matchstick is put in front of it then it will make a Pop sound and blow off.

Now, Let strong acid be HCl

Then Hydrochloric acid when reacted with Zinc metal will give zinc chloride + hydrogen gas

The reaction is followed :-

HCl + Zn ---->ZnCl2 + H2

Or

pH of salt is 14

So the salt must be Sodium Hydogen Carbonate

NaHCO3

REACTION :-

NaCl + H2O + NH3 + CO2 --------> NH4Cl + NaHCO3

Sodium Hydrogencarbonate

Like my answer if you find it useful!

First answer is:-NAOH + Zn = Na2ZnO2 + H2This hydrogen gas can be tested by putting matchstick over the solution. The burning matchstick will extinguish by a pop sound.

Then, when zn metal reacts with a dilute strong acid such as hcl, it will give zinc chloride and hydrogen gas again. Hcl + Zn= ZnCl2 + H2

the equation is already balanced!

Analkeneisconvertedto correspondingalkyl halideby reaction with hydrogen chloride,hydrogen ,bromide or hydrogen iodide.Alkenealso gives test of unsaturation with X2 in presence of CCL4.

Organic compound 'A' is ethyl alcohol(ethanol).

Ethanol on heating with alkaline potassium permanganate forms ethanoic acid (compound B) and water.

C2H5OHalkaline KMNO4 + heat--> CH3COOH + H2O

Compound A-Ethanol

Compound B-Ethanoic acid

When ethanoic acid(CH3COOH) reacts with ethanol (C2H5OH) in the presence of acid , ethyl ethanaote (CH3COOC2H5) and water are formed .

C2H2OH+CH3COOHH2SO4>CH3-COO-C2H5+H2O.

This process yields semi-solid products like shortening and margarine.

The balanced equation is 2HNO3 +Ca(OH)2 ==> Ca(NO3)2 + 2H2O

Balanced chemical equation

2HNO3 + Ca(OH)2 ---> Ca(NO3)2 + 2H2O

State of hydrogen atom (n) = 1(due to ground state). Radius of hydrogen atom (r) = 0.53 Å. Atomic number of Li (Z) = 3. Radius of Li2+ ion = r x n²/Z = 0.53 x 1²/3 = 0.17

2,2-diethaile propen

Ans :- option (A) sodium

The metals which are more reactive then hydrogen in the reactivity series replaces hydrogen , when they reacts with water.

3 Ethyl 2,2,3,4,5,6,6 Heptamethy 5 isoproply Octane

by the structure the answer is 3ethyl2, 2,3,4,5,6,6heptamethy5isoproply octane

5)CHO-CHOIUPAC name: EthanedialCommon name: GlyoxalIt is smallest dialdehyde.Physical appearance: Yellow coloured liquid.

propene ...............................

Pentene is the iupac name

2- Ethyl -3- methylpentome

ANSWER: 2-methenyl butane

2-methylbutene is the IUPAC name

2 methyle butene is the iupac name

structure is wrong.carbon cant have 5 valency

2-methyl.bute1-ene. this is your option

2 methyl bute 2 ene..........................

3 mithil bautin dileshwarmahendra

propene is iupac name

3 methyl - but-1ene is the iupac name of above compound

2-मैथिल व्यूटैन ............

2-methylbutene is correct

ANSWER: 2-methyl but-1-ene

this answer was a 2 methyl butene

2-methylbutene is right answer

2-methyl but-1-ene correct✅

2-methenyl butane is right answer

IUPAC =2–Methyle but–1ene

2 methyle 1 byutin . . . . . . . . . . . . . .

2 methyl, but-1-ene. Is the carrect answer

2 -methyl butene bcaz of double hv 1st priority so 4 carbon atoms are select

The IUPAC name is tetra-methylene

2-methylbutene IUPSC Name

iska answer 2 mithayle butenon

2 methil viewt 2 aayan

2-methyl butane because in long chain cotain number of carbon atoms is 4 and 2 position of long chain attach methyl group

Hope this helps

but-2-ene

4-ethyl-3-methyl-heptane

but-1-ene2-methyl-pent-1-enepropan-2-ol

Although amino group is o, p− directing in aromatic electrophilic substitution reactions, aniline on nitration gives a substantial amount of m-nitroaniline:Nitration is carried out in an acidic medium. In an acidic medium, aniline is protonated to give anilinium ion (which is meta-directing)For this reason, aniline on nitration gives a substantial amount of m-nitroaniline.

cis-Dichlorobis(ethylenediamine)cobalt(III) chloride

Like synthetic fibres, plastic is also called apolymer.

plastic is also a polymer

Solubility of potassium nitrate at313K = 62/100

100 g of water contains potassium nitrate = 62 g

50 g of water contains potassium nitrate = 62/100 X 50 = 31g

Thus, 31 g potassium nitrate would be needed to produce a saturated solution of potassium nitrate in 50 g of water at 313 K.