Practice Standard Enthalpy Of Neutralization (δh_neut°) (1.2.2.3) - Unit 5: Energetics and Thermochemistry

Practice: Standard Enthalpy of Neutralization (ΔH_neut°)

Lesson 1.2.2.3Unit 5: Energetics and Thermochemistry

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6 sample questions

Question 1.
Define the standard enthalpy of neutralization.
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Think about what happens during an acid-base reaction.
Question 2.
What is the typical value of ΔH_neut° for strong acid-base reactions?
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This is a common number for reactions you might have encountered.
3Question 3.
What is the standard enthalpy of neutralization?
- The heat absorbed when mixing any two substances
- The enthalpy change when an acid and base form one mole of water
- The energy required to dissociate a strong acid
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Think about what happens in an acid-base reaction.
4Question 4.
ΔH_neut° is usually approximately -57.3 kJ/mol for what type of reactions?
- True
- False
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Consider common strong acids and bases used in class.
Question 5.
Calculate the enthalpy change for a reaction where 0.25 mol of hydrochloric acid is neutralized by sodium hydroxide, given that ΔH_neut° is -57.3 kJ/mol.
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Use the relationship between moles and ΔH_neut°.
Question 6.
Discuss how the temperature of the solution might change if a weak acid is used instead of a strong acid. What implications does this have for the enthalpy change?
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Remember the differences between strong and weak acids!

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