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Write balanced chemical equation for the...

Write balanced chemical equation for the reaction of:
a. Al when heated in air, write the name of the product.
b. Fe with steam, name the product obtained.
c. Ca with water, why does calcium start floating on wate?

Text Solution

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a. `4Al(s)+3O_(2)(g)to2Al_(2)O_(3)(s)`
The name of product is aluminium oxiede.
b. `3Fe(s)+4H_(2)O(g)toFe_(3)O_(4)(s)+4H_(2)(g)`
The name of product is ferroso ferric oxide.
c. `Ca(s)=H_(2)O(l)toCaO(s)+H_(2)(g)`
The hydrogen gas formed during the reaction sticks to the metal surface making the metal to float on water.
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