NEET Chemistry The s-Block Elements Questions Solved

When crystal of caustic soda is exposed to air, a liquid layer is deposited because:

(a) crystal melts

(b) crystal loses water

(c) crystal absorbs moisture and CO2

(d) crystal sublimes

(c) NaOH absorbs moisture and CO2 from air to form Na2CO3

2NaOH + CO2          Na2CO3 + H2O2

Difficulty Level:

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