Chemistry Chapter 6 Mock Test

From a temperature of 27°c, one mole of an ideal gas is allowed to expand reversibly and adiabatically. If the work done during the process is 3 kJ, the final temperature will be equal to (C_v = 20JK-¹)

The enthalpy of neutralization _______ of acid and bases is nearly same.

The bond that possess the highest average bond energy (Kcal/mol) is:

System absorbs 600 J of heat and work equivalent to 300 J on its surroundings. Find the change in internal energy.

The volume must be expressed in which of the following term in order to calculate the amount of work done in joules during reversible isothermal expansion of an ideal gas

 Mutual heat of neutralization of 40 gm of Sodium hydroxide (NaOH) and 60 gm Acetic acid (CH₃COOH) will be

Values of \(\Delta \)H for the combustion of ethene and ethyne are – 341.1 and – 310.0 kcal respectively. Which one of the following is a better fuel?

When disorder of a system increases, the change is known to be:

8 gm of methane (CH₄) is completely burnt in air. Find the no. of moles of water produced.

Statement 1 : T, P and V are state variables or state functions.

Statement 2 : Their values depends upon the state of system and how it is reached.

Variation of heat of reaction with temperature is called as

Enthalpy of formation of ammonia is 46.0 kJ\(mol^{-1}\)  Find the enthalpy change for the reaction  2NH₃(g) \(\to\)  2N₂(g) + 3H₂(g).

The combustion of 5.0 of coke raised the temperature of 1 kg of water from 10°C to 47°C. Estimate the fuel value of coke in kcal/g.

The condition in which a chemical reaction can not occur is:

Find the amount of work done during the expansion of a gas from a volume of 4dm³ to 6dm³ against a constant external pressure of 3atm? (1L atm = 101.32 J)

Statement 1: Heat of sublimation is the sum of heat of fusion and the heat of vaporization.

Statement 2: Heat of reaction or enthalpy change is same whether the reaction takes place in one step or in a no. of steps.

The condition that will always lead to a non-spontaneous change is:

The weight of oxygen which is required for the complete combustion of 2.8 kg of ethylene is:

Entropy of crystalline substances at absolute zero going according to the third law of thermodynamics should be taken as

The value of \(\Delta H\) in an endothermic reaction is

Find the amount of work done during isothermal expansion of one mole of an ideal gas from 10 atm to 1 atm at 300 K.

C (diamond) + C₂(g) \(\to \) CO₂(g); \(\Delta  H\) = -395 kJ

C (graphite)-O₂ (g) \(\to \) CO₂(g); \(\Delta H\) = -393.5 kJ

From the data, the \(\Delta H\) when diamond is formed from graphite, is

 Statement 1 : At constant temperature and constant volume, heat absorbed in a reaction is -\(\Delta G \).

 Statement 2 : For the reaction to be spontaneous, \(\Delta G \) should be negative.

Which one of the following statement is correct

Law of thermodynamics which helps in calculating entropy at different temperatures is

Carbon and carbon monoxide burn in oxygen to form carbon dioxide as per the following reactions

C + O₂ \(\to \)CO₂; \(\Delta H \) = – 394 kJ mol^-1

2CO + O₂ \(\to \) 2CO₂; \(\Delta H \) = – 569 kJ mol^-1

Find the heat of formation of 1 mol of carbon monoxide.

Statement 1 : Entropy of ice is less than that of water.

 Statement 2 : Ice possess cage like structure.

 Find the correct one for the phase transition of 1 mol of H₂O . H₂O_{s)⇌ H₂O_{1) at 0°C and 1 atm

Gibbs free energy G, enthalpy H and entropy S are interrelated as in which of the following?

Find molar heat capacity of water in equilibrium with ice at the constant pressure.

The densities of graphite and diamond at 298 K are 2.25 and 3.31 g cm-³, respectively. Find the pressure at which graphite will be transformed diamond at 298 K if the standard free energy difference (\(\Delta \)G°) is equal to 1895 J mol^-1

Which one of the following would be expected to possess the largest entropy per mole?

Bond dissociation energy required to form benzyl radical from toluene is _______ than the formation of the methyl radical from methane

Which one of the following is least random state of water?

For the determination of heat of ________ Hess law is applicable

The equation which gives the dependence of Gibbs free energy on pressure for an isothermal process of an ideal gas is:

In which of the following, maximum entropy is present?

Which of the following is correct for the exothermic reaction?

In which of the following state, the matter possess highest entropy?

2.1 g of Iron (Fe) combines with Sulphur (S) evolving 3.77 kJ. Find the heat of formation of FeS in KJ/mol.

Which of the following is (are) endothermic reaction?

The enthalpy of solution of BaCl₂(s) and BaCl₂.2H₂O(s) are -20.6 and 8.8 kJ mol^-1 Find the enthalpy change for the reaction BaCl₂(s) + 2H₂O \(\to \)

_______ condition is not favourable for the feasibility’ of a reaction.

The entropy changed involved in the conversion of 1 mole of liquid water at 373 K to vapour at the same temperature will be [\(\Delta \)H_vap = 2.257kJ / gm]

For the determination of heat of ______ Hess law is applicable.