Test: Enthalpy of Neutralisation & Solution

Question 1

Direction (Q. Nos. 1-13) This section contains 13 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE option is correct.

Q. If the enthalpy of HCI (g) and Cl^- (aq) are - 92.30 kJ mol^-1 and - 167.44 kJ mol^-1 respectively, then Δ_rH° for the following reaction is

HCI (g) + aq → H⁺(aq) + Cl^-(aq)

Accepted Answer

-75.14 kJ mol-1

Answer

+75.14 kJ mol^-1

Answer

-259.74 kJ mol^-1

Answer

0.00 kJ mol^-1

Question 2

The enthalpy of neutralisation of HS^- (aq) is - 5.1 kJ mol^-1. Thus, second ionisation energy of H₂S is

Accepted Answer

+52.2 kJ mol^-1

Answer

+52.6 kJ mol^-1

Answer

-13.7 kJ mol^-1

Answer

-52.2 kJ mol^-1

Question 3

Given, Δ_fH° of HCI (g) is - 22 . 10 kcal mol^-1 and Δ_SolutionH° (heat of solution) of HCI (g) is - 17.9 kcal mol^-1. Thus, Δ_fH ° of Cl^- (aq) is

Accepted Answer

-40.0 kcal mol^-1

Answer

+40.0 kcal mol^-1

Answer

+17.9 kcal mol^-1

Answer

+22.1 kcal mol^-1

Question 4

Enthalpy of neutralisation of a weak dibasic acid by NaOH is - 24.0 kcal. Thus, enthalpy of ionisation of dibasic acid is

Accepted Answer

3.4 kcal mol^-1

Answer

10.3 kcal mol^-1

Answer

13.7 kcal mol^-1

Answer

-13.7 kcal mol^-1

Question 5

Consider the following reaction,

30 mL of 0.10 MNaOH (aq) + 10 mL of 0.10 M HCI (aq), enthalpy change is .
On further adding 20 mL of 0.10 M HCI (aq), enthalpy change is . Thus, these values are

Accepted Answer

b

Answer

a

Answer

c

Answer

d

Question 6

In the following reactions,

I. 30 mL of 0.1 M Ba(OH)₂(aq) + 30 mL of 0.1 M H₂SO₄ (aq), rise intemperature = ΔT₁
II. 90 mL of 0.1 M Ba(OH)₂(aq) + 90 mL of 0.1 M H₂SO₄ (aq), rise intemperature = ΔT₂. Thus,

Accepted Answer

ΔT₂ = 3ΔT₁

Answer

ΔT₁ = ΔT₂

Answer

ΔT₁ = 3ΔT₂

Answer

ΔT₁ = 2ΔT₂

Question 7

Given, CH₃COOH(aq) → CH₃COO^-(aq) + H⁺ (aq), Δ_rH° = 0.005 kcal g^-1

Enthalpy change when 1 mole of Ca(OH)₂, a strong base, is completely neutralised by CH₃COOH (aq) in dilute solution is

Accepted Answer

-26.8 kcal mol^-1

Answer

-27.4 kcal mol^-1

Answer

-13.4 kcal mol^-1

Answer

-27.1 kcal mol^-1

Question 8

For the reactions,

Accepted Answer

-13.36 kcal

Answer

15.08 kcal

Answer

-15.08 kcal

Answer

13.36 kcal

Question 9

Thus, heat of neutralisation of H₂C₂O₄ (aq) is

Accepted Answer

-24.2 kcal mol^-1

Answer

-16.9 kcal mol^-1

Answer

-10.5 kcal mol^-1

Answer

-30.6 kcal mol^-1

Question 10

Given,

Thus, for the reaction,

Δ_rH° is

Accepted Answer

+23.6 kJ mol^-1

Answer

-57.3 kJ mol^-1

Answer

-3.6 kJ mol^-1

Answer

+57.3 kJ mol^-1

Question 11

Hydration energies of Li⁺ and Cl^- ions are - 499 and - 382 kJ mol^-1 respectively. If lattice energy of LiCI is - 840 kJ mol^-1 then heat of solution of LiCI is

Accepted Answer

-41 kJ mol ^-1

Answer

+41 kJ mol ^-1

Answer

-1621 kJ mol ^-1

Answer

-1222 kJ mol ^-1

Question 12

Enthalpy change on mixing 100 mL of 1 M Ca(OH)₂ with 100 mL of 1 M H₂SO₄ is

Accepted Answer

-2.74 kcal

Answer

-13.7 kcal

Answer

-27.4 kcal

Answer

-1.37 kcal

Question 13

Taking each reactant in 1:1 molar ratio, enthalpy changes are and in the following reactions.

and are (in kcal)

Accepted Answer

b

Answer

a

Answer

c

Answer

d

Question 14

Direction (Q. Nos. 14) This sectionis based on statement I and Statement II. Select the correct answer from the code given below.
Q. Statement I : Based on the following thermochemical reactions :

Ionisation of HF(aq)is an exothermic reaction.

Statement II : Enthalpy decrease in hydration of H⁺ (aq) and F^- (aq) exceeds the ionisation energy of HF.

Accepted Answer

Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement I

Answer

Both Statement I and Statement II are correct and Statement II is not the correct explanation of Statement I

Answer

Statement I is correct but Statement II is incorrect

Answer

Statement II is correct but Statement I is incorrect

Question 15

Direction (Q. Nos. 15-16) This section contains a paragraph, wach describing theory, experiments, data etc. three Questions related to paragraph have been given.Each question have only one correct answer among the four given ptions (a),(b),(c),(d).

A quantity of 100 mL of 0.5 HCI is mixed with the 100 mL of 0.5 NaOH in a constant pressure calorimeter that has a heat capacity of 335 JK^-1. Temperature of the mixture increased by 2.40 K. Density of the solution = 1g mL^-1.

Q. Heat of neutralisation per mole of each reactant is

Q. Heat of solution due to mixing is

Accepted Answer

-2.008 kJ

Answer

+2.008&#160;kJ

Answer

-2.812&#160;kJ

Answer

+2.812&#160;kJ

Question 16

A quantity of 100 mL of 0.5 HCI is mixed with the 100 mL of 0.5 NaOH in a constant pressure calorimeter that has a heat capacity of 335 JK^-1. Temperature of the mixture increased by 2.40 K. Density of the solution = 1g mL^-1.

Q. Heat of neutralisation per mole of each reactant is

Accepted Answer

-56.24 kJ

Answer

-2.812 kJ

Answer

-28.12 kJ

Answer

+56.24 kJ

Question 17

Direction (Q. Nos. 17 - 19) This section contains 3 questions. when worked out will result in an integer from 0 to 9 (both inclusive).

Q. Lattice energy of NaCI (s) is - 788.0 kJ mol^-1 and enthalpy of hydration is - 784.0 kJ mol^-1. What is enthalpy change for the following reaction in kJ mol^-1?

Accepted Answer

Question 18

When 4.0 mL of 2.0 N solution of weak acid is neutralised by a dilute aqueous solution of sodium hydroxide, 64 cal of heat is liberated. What is the heat of neutralisation in cal/milliequivalent?

Accepted Answer

Question 19

Heat of neutralisation of a polybasic acid by a strong base is - 54.8 kcal mol^-1? What is basicity of the acid?

Accepted Answer

Enthalpy of Neutralisation & Solution - Free MCQ Practice Test with solutions,

MCQ Practice Test & Solutions: Test: Enthalpy of Neutralisation & Solution (19 Questions)

The enthalpy of neutralisation of HS^- (aq) is - 5.1 kJ mol^-1. Thus, second ionisation energy of H₂S is

Given, Δ_fH° of HCI (g) is - 22 . 10 kcal mol^-1 and Δ_SolutionH° (heat of solution) of HCI (g) is - 17.9 kcal mol^-1. Thus, Δ_fH ° of Cl^- (aq) is

Enthalpy of neutralisation of a weak dibasic acid by NaOH is - 24.0 kcal. Thus, enthalpy of ionisation of dibasic acid is

Consider the following reaction,
30 mL of 0.10 MNaOH (aq) + 10 mL of 0.10 M HCI (aq), enthalpy change is .
On further adding 20 mL of 0.10 M HCI (aq), enthalpy change is . Thus, these values are

In the following reactions,
I. 30 mL of 0.1 M Ba(OH)₂(aq) + 30 mL of 0.1 M H₂SO₄ (aq), rise intemperature = ΔT₁
II. 90 mL of 0.1 M Ba(OH)₂(aq) + 90 mL of 0.1 M H₂SO₄ (aq), rise intemperature = ΔT₂. Thus,

Given, CH₃COOH(aq) → CH₃COO^-(aq) + H⁺ (aq), Δ_rH° = 0.005 kcal g^-1
Enthalpy change when 1 mole of Ca(OH)₂, a strong base, is completely neutralised by CH₃COOH (aq) in dilute solution is

For the reactions,

Thus, heat of neutralisation of H₂C₂O₄ (aq) is

Given,

Thus, for the reaction,
Δ_rH° is

Hydration energies of Li⁺ and Cl^- ions are - 499 and - 382 kJ mol^-1 respectively. If lattice energy of LiCI is - 840 kJ mol^-1 then heat of solution of LiCI is

Enthalpy change on mixing 100 mL of 1 M Ca(OH)₂ with 100 mL of 1 M H₂SO₄ is

Taking each reactant in 1:1 molar ratio, enthalpy changes are and in the following reactions.
and are (in kcal)

A quantity of 100 mL of 0.5 HCI is mixed with the 100 mL of 0.5 NaOH in a constant pressure calorimeter that has a heat capacity of 335 JK^-1. Temperature of the mixture increased by 2.40 K. Density of the solution = 1g mL^-1.

Q. Heat of neutralisation per mole of each reactant is

Direction (Q. Nos. 17 - 19) This section contains 3 questions. when worked out will result in an integer from 0 to 9 (both inclusive).
Q. Lattice energy of NaCI (s) is - 788.0 kJ mol^-1 and enthalpy of hydration is - 784.0 kJ mol^-1. What is enthalpy change for the following reaction in kJ mol^-1?

When 4.0 mL of 2.0 N solution of weak acid is neutralised by a dilute aqueous solution of sodium hydroxide, 64 cal of heat is liberated. What is the heat of neutralisation in cal/milliequivalent?

Heat of neutralisation of a polybasic acid by a strong base is - 54.8 kcal mol^-1? What is basicity of the acid?

NCERT Based Tests for NEET

NCERT Based Tests for NEET

Top Courses for NEET

Schools

Competitive Exams

International Exams

Quick Links

About this NEET Practice Test

Explore more NEET Study Resources

Enthalpy of Neutralisation & Solution - Free MCQ Practice Test with solutions,

MCQ Practice Test & Solutions: Test: Enthalpy of Neutralisation & Solution (19 Questions)

The enthalpy of neutralisation of HS- (aq) is - 5.1 kJ mol-1. Thus, second ionisation energy of H2S is

Given, ΔfH° of HCI (g) is - 22 . 10 kcal mol-1 and ΔSolutionH° (heat of solution) of HCI (g) is - 17.9 kcal mol-1. Thus, ΔfH ° of Cl- (aq) is

Enthalpy of neutralisation of a weak dibasic acid by NaOH is - 24.0 kcal. Thus, enthalpy of ionisation of dibasic acid is

Consider the following reaction,30 mL of 0.10 MNaOH (aq) + 10 mL of 0.10 M HCI (aq), enthalpy change is . On further adding 20 mL of 0.10 M HCI (aq), enthalpy change is . Thus, these values are

In the following reactions,I. 30 mL of 0.1 M Ba(OH)2(aq) + 30 mL of 0.1 M H2SO4 (aq), rise intemperature = ΔT1 II. 90 mL of 0.1 M Ba(OH)2(aq) + 90 mL of 0.1 M H2SO4 (aq), rise intemperature = ΔT2. Thus,

Given, CH3COOH(aq) → CH3COO- (aq) + H+ (aq), ΔrH° = 0.005 kcal g-1Enthalpy change when 1 mole of Ca(OH)2, a strong base, is completely neutralised by CH3COOH (aq) in dilute solution is

For the reactions,

Thus, heat of neutralisation of H2C2O4 (aq) is

Given, Thus, for the reaction,ΔrH° is

Hydration energies of Li+ and Cl- ions are - 499 and - 382 kJ mol-1 respectively. If lattice energy of LiCI is - 840 kJ mol-1 then heat of solution of LiCI is

Enthalpy change on mixing 100 mL of 1 M Ca(OH)2 with 100 mL of 1 M H2SO4 is

Taking each reactant in 1:1 molar ratio, enthalpy changes are and in the following reactions. and are (in kcal)

A quantity of 100 mL of 0.5 HCI is mixed with the 100 mL of 0.5 NaOH in a constant pressure calorimeter that has a heat capacity of 335 JK-1. Temperature of the mixture increased by 2.40 K. Density of the solution = 1g mL-1. Q. Heat of neutralisation per mole of each reactant is

Direction (Q. Nos. 17 - 19) This section contains 3 questions. when worked out will result in an integer from 0 to 9 (both inclusive).Q. Lattice energy of NaCI (s) is - 788.0 kJ mol-1 and enthalpy of hydration is - 784.0 kJ mol-1. What is enthalpy change for the following reaction in kJ mol-1?

When 4.0 mL of 2.0 N solution of weak acid is neutralised by a dilute aqueous solution of sodium hydroxide, 64 cal of heat is liberated. What is the heat of neutralisation in cal/milliequivalent?

Heat of neutralisation of a polybasic acid by a strong base is - 54.8 kcal mol-1? What is basicity of the acid?

NCERT Based Tests for NEET

NCERT Based Tests for NEET

Top Courses for NEET

About this NEET Practice Test

Explore more NEET Study Resources

The enthalpy of neutralisation of HS^- (aq) is - 5.1 kJ mol^-1. Thus, second ionisation energy of H₂S is

Given, Δ_fH° of HCI (g) is - 22 . 10 kcal mol^-1 and Δ_SolutionH° (heat of solution) of HCI (g) is - 17.9 kcal mol^-1. Thus, Δ_fH ° of Cl^- (aq) is

Consider the following reaction,
30 mL of 0.10 MNaOH (aq) + 10 mL of 0.10 M HCI (aq), enthalpy change is .
On further adding 20 mL of 0.10 M HCI (aq), enthalpy change is . Thus, these values are

In the following reactions,
I. 30 mL of 0.1 M Ba(OH)₂(aq) + 30 mL of 0.1 M H₂SO₄ (aq), rise intemperature = ΔT₁
II. 90 mL of 0.1 M Ba(OH)₂(aq) + 90 mL of 0.1 M H₂SO₄ (aq), rise intemperature = ΔT₂. Thus,

Given, CH₃COOH(aq) → CH₃COO^-(aq) + H⁺ (aq), Δ_rH° = 0.005 kcal g^-1
Enthalpy change when 1 mole of Ca(OH)₂, a strong base, is completely neutralised by CH₃COOH (aq) in dilute solution is

Thus, heat of neutralisation of H₂C₂O₄ (aq) is

Given,

Thus, for the reaction,
Δ_rH° is

Hydration energies of Li⁺ and Cl^- ions are - 499 and - 382 kJ mol^-1 respectively. If lattice energy of LiCI is - 840 kJ mol^-1 then heat of solution of LiCI is

Enthalpy change on mixing 100 mL of 1 M Ca(OH)₂ with 100 mL of 1 M H₂SO₄ is

Taking each reactant in 1:1 molar ratio, enthalpy changes are and in the following reactions.
and are (in kcal)

A quantity of 100 mL of 0.5 HCI is mixed with the 100 mL of 0.5 NaOH in a constant pressure calorimeter that has a heat capacity of 335 JK^-1. Temperature of the mixture increased by 2.40 K. Density of the solution = 1g mL^-1.

Q. Heat of neutralisation per mole of each reactant is

Direction (Q. Nos. 17 - 19) This section contains 3 questions. when worked out will result in an integer from 0 to 9 (both inclusive).
Q. Lattice energy of NaCI (s) is - 788.0 kJ mol^-1 and enthalpy of hydration is - 784.0 kJ mol^-1. What is enthalpy change for the following reaction in kJ mol^-1?

Heat of neutralisation of a polybasic acid by a strong base is - 54.8 kcal mol^-1? What is basicity of the acid?