Ta có: \(n_{HCl}=0,2.2=0,4\left(mol\right)\)
a, PT: \(HCl+NaOH\rightarrow NaCl+H_2O\)
______0,4_____0,4______0,4 (mol)
b, \(m_{NaOH}=0,4.40=16\left(g\right)\)
\(\Rightarrow m_{ddNaOH}=\dfrac{16}{20\%}=80\left(g\right)\)
c, \(m_{NaCl}=0,4.58,5=23,4\left(g\right)\)
Bạn tham khảo nhé!