Which of the following processes is an endothermic reaction?
CHEMISTRY
WAEC 2006
Which of the following processes is an endothermic reaction?
- A. Dissolving NH4CI crystals in water
- B. Addition of concentrated H2SO4
- C. Dissolving NaOH pellets in water
- D. Passing SO3 gas into water
Correct Answer: A. Dissolving NH4CI crystals in water
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