Find the value of in the hydrated salt if the percentage of water of crystallization is . (At. wt. ) — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question
Question
Find the value of $n$ in the hydrated salt $MgSO_4 \cdot nH_2O$ if the percentage of water of crystallization is $51.22\%$. (At. wt. $Mg=24, S=32$)
Answer: 7
💡 Solution & Explanation
$\text{Molar mass of } MgSO_4 = 120$. <br>$\frac{18n}{120 + 18n} \times 100 = 51.22$. <br>$1800n = 6146.4 + 921.96n \Rightarrow 878.04n = 6146.4 \Rightarrow n \approx 7$.
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