The correct formula of calcium hydrogen sulfate is :

C a H_{2} S O_{4}

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C a H S O_{4}

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C a (H S O_{4})_{2}

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C a_{2} H S O_{4}

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C a_{2} H_{2} S O_{4}

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Solution

The correct option is A $C a (H S O_{4})_{2}$
The correct formula of calcium hydrogen sulfate is $C a (H S O_{4})_{2}$ .
The valence of calcium is +2 and the valence of hydrogen sufate anion is -1.
Thus, there is one $C a^{2 +}$ ion and two $H S O_{4}^{-}$ ions.

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C a S O_{4}

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500 m L

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