Which of the following salts does not contain | vedclass

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(D) Water of crystallisation is the fixed number of water molecules present in one formula unit of a salt.$1$. Blue vitriol is $CuSO_4 \cdot 5H_2O$, w

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Baking soda

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(D) Water of crystallisation is the fixed number of water molecules present in one formula unit of a salt.$1$. Blue vitriol is $CuSO_4 \cdot 5H_2O$, which contains $5$ molecules of water of crystallisation.$2$. Gypsum is $CaSO_4 \cdot 2H_2O$, which contains $2$ molecules of water of crystallisation.$3$. Washing soda is $Na_2CO_3 \cdot 10H_2O$, which contains $10$ molecules of water of crystallisation.$4$. Baking soda is $NaHCO_3$, which does not contain any water of crystallisation.Therefore, the correct option is $D$.

Which of the following salts does not contain water of crystallisation?

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