Question

the action of water on quicklime is an example of which type of reaction??

Answer 1

Cao + H²o = Ca(OH)²

this reaction is known as combination reaction
hope its help you

Answer 2

Answer:

The "action of water on quicklime" is the example of combination reaction.

Explanation:

• Metallic oxides will react with the water to form ‘hydroxides’.
• So when quicklime or calcium oxide (a metallic oxide) reacts with water, it forms calcium hydroxide or slaked lime.
• The reaction takes place because of the high affinity of calcium oxide to water and it is an example of combination reaction.

                                      $\mathrm{CaO}+\mathrm{H}_{2} \mathrm{O} \rightarrow \mathrm{Ca}(\mathrm{OH})_{2}+\Delta (Heat)$

• This is a heat evolving exothermic reaction and the water becomes hot that it produces a ‘hissing sound’, when ‘quicklime’ is added to ‘water’.