Salt cake (Na(2)SO(4)) is prepared as fo...

Salt cake `(Na_(2)SO_(4))` is prepared as follows:
`2NaCl + H_(2) SO_(4) rarr Na_(2)SO_(4) + 2HCl`
How much 80% pure salt cake could be produced form `100.0 g` of 90% pure salt in the above reaction?

A

`43.92 g`

B

`68.62 g`

C

`87.84 g`

D

`137.25 g`

Verified by Experts

The correct Answer is:

D

Weight of `Na_(2) SO_(4) = (109.8 g Na_(2) SO_(4)) xx`
`((100 g "new mixture")/(80.0 g Na_(2)SO_(4)))`
`= (109.8 xx 100)/(80)`
`= 137.25 g` mixture

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