Question

Calculate the molar mass (in g/mol) of the anhydrous and hydrated forms of copper ii chloride

Answer 1

Answer:

$M_{CuCl_2}=134.44g/mol\\\\M_{CuCl_2\ H_2O}=152.44g/mol\\\\M_{CuCl_2\ 2H_2O}=170.44g/mol$

Explanation:

Hello,

In this case, since anhydrous copper (II) chloride is CuCl₂ whose molar mass is:

$M_{CuCl_2}=m_{Cu}+m_{Cl}*2=63.54+35.45*2=134.44g/mol$

We can also find copper (II) chloride both monohydrate and dihydrate as CuCl₂·H₂O and CuCl₂·2H₂O respectively, whose molar masses are:

$M_{CuCl_2\ H_2O}=m_{Cu}+m_{Cl}*2+m_{H_2O}=63.54+35.45*2+18=152.44g/mol\\\\M_{CuCl_2\ 2H_2O}=m_{Cu}+m_{Cl}*2+m_{H_2O}*2=63.54+35.45*2+18*2=170.44g/mol$

Best regards.