A student took 2 - 3 g of substance x in a glass beaker and poured water over it slowly - Science - Chemical Reactions and Equations

Question

A student took 2 - 3 g of substance x in a glass beaker
and poured water over it slowly He observed bubbles along with a
hissing noise The beaker becomes quite hot Identify x What
type ofareaction is it ?

Kirti Gogia · Accepted Answer

The substance is X is quicklime or calcium oxide Calcium oxide
when mixed with water reacts with it to form calcium hydroxide,
also known as slaked lime The chemical equation for the same is
given as:
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The above reaction is a combination reaction It is also
exothermic in nature

A student took 2 - 3 g of substance x in a glass beaker and poured water over it slowly. He observed bubbles along with a hissing noise. The beaker becomes quite hot. Identify x. What type ofareaction is it ?