\(n_{NaOH}=0,25\left(mol\right)\)
\(2NaOH+CuCl2->2NaCl+Cu\left(OH\right)2\downarrow\)
0,25...............0,125.........0,25.................0,125
\(\dfrac{0,25}{2}< \dfrac{0,2}{1}\) => CuCl2 du
\(m_{\downarrow}=m_{Cu\left(OH\right)2}=0,125.98=12,25\left(g\right)\)
Trong nc lọc có CuCl2 dư ( 0,075 mol) NaCl (0,25 mol)
\(m_{CuCl2}=0,075.135=10,125\left(g\right)\)
\(m_{NaCl}=0,25.58,5=14,625\left(g\right)\)