\(n_{Na2O}=\dfrac{15,5}{62}=0,25\left(mol\right)\)
Pt : \(Na_2O+2HCl\rightarrow2NaCl+H_2O|\)
1 2 2 1
0,25 0,5 0,5
a) \(n_{NaCl}=\dfrac{0,25.2}{1}=0,5\left(mol\right)\)
⇒ \(m_{NaCl}=0,5.58,5=29,25\left(g\right)\)
b) \(n_{HCl}=\dfrac{0,25.2}{1}=0,5\left(mol\right)\)
\(C_{M_{ddHCl}}=\dfrac{0,5}{0,5}=1\left(M\right)\)
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