Question

Calculate the molar mass of the complex $CuS{O}_4.5H_{2}O.$

• A. 249.5 g/mol
• B. 339.5 g/mol
• C. 269 g/mol
• D. 349.5 g/mol

Answer 1

The correct option is A 249.5 g/mol

Molar mass of the complex $CuS{O}_4.5H_{2}O$
$=(63.5+32+16\times 4+10\times 1+16\times 5)g/mol$
$=249.5g/mol$