ExamPlay Light Logo
登入

WAEC - Chemistry (2019 - No. 24)

When quicklime dissolves in water?
heat is absorbed
heat is evolved
oxygen is liberated
hydrogen is given off

解释

- When quicklime is added to water, it forms slaked lime along with the evolution of heat. There will be a rise in the temperature of the bucket. Calcium oxide reacts with water to form calcium hydroxide, also called slaked lime.

- That is adding water to quicklime produces an exothermic reaction (gives out heat) and hydrated lime.

评论 (0)

登录发表评论
广告
BrainBehindX Inc Logo
©2026; 供电 BrainBehindX Inc