WAEC Chemistry 2019 Objective — Question 23
Question 23 of 50 from the West African Examinations Council (WAEC) Chemistry 2019 Objective paper, with the correct answer and a full explanation.
Advertisement
Which of the following pairs of substances has the highest heat of neutralization?
- A. A strong acid and strong baseCorrect
- B. Weak acid and weak base
- C. Strong acid and weak base
- D. Weak acid and strong base
Explanation
A strong acid reacting with a strong base gives the greatest (most negative) heat of neutralization, about –57.3 kJ/mol, regardless of the specific acid/base used.
Advertisement
Sign up free to unlock
- Score tracking
- Practice history
- Saved questions
- Progress dashboard
- Personalized sessions
- Weak-topic breakdown
…and/or go further with premium services and No Ads.