Question

Number of moles of $HCl$ requied to test one mole of copper oxide is:

• A. $1$
• B. $2$
• C. $3$
• D. $4$

Answer 1

Answer: (B)

$2$

$CUO+2HCl\to {CuCl}_2+H_{2}O$

2 $HCl$ moles for one mole $CUO$.