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Q.

2.5 g of a mixture of BaO and CaO when heated with $H_{2} {SO}_{4}$ , produced 4.713 g of the mixed sulphates. Find the percentage of BaO present in the mixture.

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answer is 60.

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Detailed Solution

$x_{g}$ BaO and (2.5 - x) g Cao

${BaSO}_{4}$ and ${CaSO}_{4}$ are formed

$\frac{x}{153} \times 233 + \frac{(2 .5 - x)}{56} \times 136 = 4 .713$

$X = 1.5 g$

$\Rightarrow \frac{1.5}{25} \times 100 = 60 %$

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