Theo gt ta có: $n_{Na_2O}=0,1(mol)$
a, $Na_2O+H_2O\rightarrow 2NaOH$
b, Ta có: $n_{NaOH}=2.n_{Na_2O}=0,2(mol)$
$\Rightarrow m_{NaOH}=8(g)$
a)
$Na_2O+ H_2O \to 2NaOH$
b)
$n_{Na_2O} = \dfrac{6,2}{62} = 0,1(mol)$
$n_{NaOH} = 2n_{Na_2O} = 0,2(mol)$
$m_{NaOH} = 0,2.40 = 8(gam)$
a) \(Na_2O+H_2O\rightarrow2NaOH\)
b) \(n_{Na_2O}=\dfrac{6.2}{62}=0.1\left(mol\right)\)
\(n_{NaOH}=0.2\left(mol\right)\)
\(m_{NaOH}=0.2\cdot40=8\left(g\right)\)