Dissolving Question?

Question

What volume of 6.0 M HCl would be required to dissolve 0.528g of CuO?

Answer 1

CuO +2HCl---> CuCl2+ H2O
you need 2 molecules of HCl for 1 of CuO
molar mass of Cu O = 63.6+16=79.6 g
so 0.528g represent 6.63*10^-3 mole or 6.63 mM oCuO
You need 6.63*2=13.26 mM of Hcl
a solution 6M HCl has 6mM by milliliter
so you need 13.26/6 =2.21 milliliters of HCl 6M