Heat of Neutralization

Chemistry ⇒ Thermochemistry and Energetics

Heat of Neutralization starts at 10 and continues till grade 12. QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Heat of Neutralization. How you perform is determined by your score and the time you take. When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.

See sample questions for grade 10

A student adds 0.1 mol of HNO₃ to 0.1 mol of KOH. How much heat is released? (Heat of neutralization = -57.1 kJ/mol)

A student mixes 0.05 mol of H₂SO₄ with excess NaOH. How much heat is released? (Heat of neutralization = -57.1 kJ/mol)

A student mixes 50 mL of 1 M HCl with 50 mL of 1 M NaOH in a calorimeter. The temperature rises by 6.5°C. If the specific heat capacity of the solution is 4.18 J/g°C and the density is 1 g/mL, calculate the heat evolved.

Calculate the heat change when 0.25 mol of H₂SO₄ is neutralized by NaOH. (Heat of neutralization = -57.1 kJ/mol)

Calculate the heat evolved when 0.2 mol of CH₃COOH is neutralized by NaOH, given the heat of neutralization is -55.2 kJ/mol.

Calculate the heat evolved when 0.5 mol of HCl reacts completely with NaOH. (Given: heat of neutralization = -57.1 kJ/mol)

Calculate the number of moles of H⁺ ions neutralized when 25 mL of 2 M HCl reacts with excess NaOH.

Describe how you would experimentally determine the heat of neutralization in a laboratory.

Describe the difference in heat of neutralization between strong acid-strong base and weak acid-strong base reactions.

Describe what happens at the molecular level during a neutralization reaction between HCl and NaOH.

Explain why the heat of neutralization for strong acid-strong base reactions is always nearly the same.

Explain why the heat of neutralization for the reaction between HCN and NaOH is less negative than that for HCl and NaOH.

Explain why the heat of neutralization for weak acids or bases is less than that for strong acids and bases.

Explain why the heat of neutralization is always negative.

If 100 mL of 1 M HCl is mixed with 100 mL of 1 M NaOH, how many moles of water are formed?

State the units in which heat of neutralization is usually expressed.

What is the heat of neutralization?

A calorimeter contains 200 g of water at 25°C. When 0.2 mol of HCl is neutralized by NaOH, the temperature rises to 27.7°C. Calculate the experimental heat of neutralization per mole of water formed. (Specific heat capacity of water = 4.18 J/g°C)

A student mixes 100 mL of 1.5 M H₂SO₄ with 150 mL of 1.0 M NaOH in a calorimeter. Calculate the maximum amount of heat that can be evolved, given the heat of neutralization for strong acid-strong base is -57.1 kJ/mol. Assume complete reaction and that H₂SO₄ is fully ionized.

Explain, with reference to bond formation and breaking, why neutralization reactions are exothermic.