What happens when calcium is treated with wat | vedclass

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(B) When calcium reacts with water,it does not react violently like sodium or potassium. Instead,it reacts less violently with water. The chemical rea

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$(iii)$ and $(iv)$

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(B) When calcium reacts with water,it does not react violently like sodium or potassium. Instead,it reacts less violently with water. The chemical reaction is: $Ca(s) + 2H_2O(l) \rightarrow Ca(OH)_2(aq) + H_2(g)$. During this reaction,the hydrogen gas produced forms bubbles that stick to the surface of the calcium metal,causing it to float. Therefore,statements $(iii)$ and $(iv)$ are correct.

$1. \text{Sulphurous acid}$	$p. H_{3}PO_{4}$
$2. \text{Sulphuric acid}$	$q. H_{2}S_{2}O_{7}$
$3. \text{Oleum}$	$r. H_{2}SO_{3}$
$4. \text{Phosphoric acid}$	$s. H_{2}SO_{4}$

What happens when calcium is treated with water?

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