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The dissociation constants for acetic acid and HCN at ${25}^{\circ }C$ are $1.5\times {10}^{-5}$ and $4.5\times {10}^{-10}$, respectively. The equilibrium constant for the equilibrium, $C{N}^{-}+C{H}_{3}COOH\rightleftharpoons HCN+C{H}_{3}CO{O}^{-}$ would be?

Calculate
the number of kJ of heat necessary to raise the temperature
of 60.0 g of aluminium from 35°C to 55°C. Molar heat capacity
of Al is 24 J mol^–1
K^–1.

At the same temperature and pressure, which of the following gas has the highest kinetic energy :

Glycerine
flows steadily through a horizontal tube of length 1.5 m and radius
1.0 cm. If the amount of glycerine collected per second at one end is
4.0 × 10^–3
kg s^–1,
what is the pressure difference between the two ends of the tube?
(Density of glycerine = 1.3 × 10³
kg m^–3
and viscosity of glycerine = 0.83 Pa s). [You may also like to check
if the assumption of laminar flow in the tube is correct].

Two liquids A and B mixed such that the adhesive forces between molecules are much larger than their respective cohesive forces. In such case, the solution will

Among the following compounds, the one that is polar and has the central atom with ${sp}^2$ hybridization is:

Four diatomic species are listed below. Identify the correct order of increasing bond order:

Which of the following molecules follows octet rule?

What should be the reagent(s) and/or solvent to accomplish the following reaction?

$Othophosphoricacid\underset{{220}^{\circ }C}{\overset{gentleheat}{\to }}X$.

What is(are) correct about X?

What will happen if we add chloretone and acid with chlobenzene and heat it. Give the equation

Hydrazine $\left(N_2{H}_4\right)$ can be produced according to the following reaction:

$ClN{H}_2+2N{H}_3\to N_2{H}_4+N{H}_{4}Cl$. 1 kg of $ClN{H}_2$ is reacted with excess $N{H}_3$, find the actual number of molecules of $N_2{H}_4$ produced if the percentage yield of the given reaction is 76%.

Carry out the following conversion

1). Ethanoic anhydride to ethanol.

2).Ethyl propanoate to ethanol.

3) Ethyl propanoate to propanol.

4).Ethanol to propane nitrite

Choose the graph which correctly represents the reaction path when a negative catalyst is present.

Graph for uncatalysed reaction:

Which of the following salts will give highest pH in water?

Justify that the following reactions are redox reactions:

(a) CuO(s) + H₂(g) → Cu(s) + H₂O(g)

(b) Fe₂O₃(s) + 3CO(g) → 2Fe(s) + 3CO₂(g)

(c) 4BCl₃(g) + 3LiAlH₄(s) → 2B₂H₆(g) + 3LiCl(s) + 3 AlCl₃ (s)

(d) 2K(s) + F₂(g) → 2K+F– (s)

(e) 4 NH₃(g) + 5 O₂(g) → 4NO(g) + 6H₂O(g)

The amount of urea to be dissolved in $500cc$ of water $(K_f={1.86}^{\circ }Ckgmo{l}^{-1})$ to produce a depression of ${0.186}^{\circ }C$ in the freezing point is:

( Molar mass of urea = $60g/mol$)

The major product(s) obtained in the following reaction is/are:

What is the IUPAC name of the simplest bicyclo compound?

The Preamble consists of how many basic features?

Find the area bounded by curves

The ratio of the electronegativity values in Muliken scale to the Pauling scale is :