Heat of Neutralization
Chemistry ⇒ Thermochemistry and Energetics
Heat of Neutralization starts at 10 and continues till grade 12.
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See sample questions for grade 10
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.
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.
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)
Which of the following acids, when neutralized with NaOH, will have a heat of neutralization less than -57.1 kJ/mol? (1) HCl (2) HNO3 (3) CH3COOH (4) HBr
Which of the following best describes a neutralization reaction? (1) Acid + Base → Salt + Water (2) Acid + Metal → Salt + Hydrogen (3) Base + Metal → Salt + Water (4) Acid + Salt → Base + Water
Which of the following equations represents a neutralization reaction? (1) HCl + NaOH → NaCl + H2O (2) HCl + Zn → ZnCl2 + H2 (3) NaOH + CO2 → Na2CO3 + H2O (4) H2SO4 + CuO → CuSO4 + H2O
Which of the following is a weak acid? (1) HCl (2) HNO3 (3) CH3COOH (4) HBr
Fill in the blank: The heat of neutralization for a reaction involving a weak acid or base is ______ than that for strong acid-strong base reactions.
Fill in the blank: The heat of neutralization is a type of ______ change.
Fill in the blank: The heat of neutralization is determined by measuring the ______ change during the reaction.
Fill in the blank: The heat of neutralization is measured under ______ conditions.
True or False: The enthalpy change for the neutralization of a monoprotic acid is the same as that for a diprotic acid, per mole of water formed.
True or False: The heat of neutralization can be measured using a bomb calorimeter.
True or False: The heat of neutralization for a reaction involving a weak acid and a strong base is always -57.1 kJ/mol.
True or False: The heat of neutralization for strong acid-strong base reactions is always the same value under standard conditions.
