2HCl + NaOH------> NaCl2 +H2O
Ta có
m\(_{NaOH}=\frac{200.10}{100}=20\left(g\right)\)
n\(_{NaOH}=\frac{20}{40}=0,5\left(mol\right)\)
Theo pthh
n\(_{HCl}=2n_{NaOH}=0,1\left(mol\right)\)
m\(_{HCl}=0,1.36,5=3,65\left(g\right)\)
mdd HCl =\(\frac{3,65.100}{3,65}=100\left(g\right)\)
Chúc bạn học tốt
PTHH : NaOH + HCl ---> NaCl + H2O
0.5---------0,5------------------------(mol)
Ta có : nHCl= 0,1 mol
m HCl= 0,1. 36,5=3,65(g)
=> mdd= 3,65.100/ 3,65=100g