Hydrates Knowledge-Based Download PDF

Questions

1. 1.

   A 4.99 g sample of hydrated copper(II) sulfate, $\text{CuSO}_4 \cdot x\text{H}_2\text{O}$, is heated to constant mass, leaving 3.19 g of anhydrous $\text{CuSO}_4$. What is the value of $x$ in the chemical formula? (Molar masses: $\text{CuSO}_4 = 159.6\text{ g/mol}$, $\text{H}_2\text{O} = 18.0\text{ g/mol}$)

   • A) 5
   • B) 2
   • C) 3
   • D) 7