\(n_{H_2SO_4}=0,75.0,01=\text{0.0075}\left(mol\right)\)
a) \(2KOH+H_2SO_4\rightarrow K_2SO_4+2H_2O\)
Theo PT \(\Rightarrow m_{KOH}=\text{0,0075}.2.56=0,84\left(g\right)\)
\(\Rightarrow m_{ddKOH}=\frac{0,84.100}{25}=3,36\left(g\right)\)
b)\(2NaOH+H_2SO_4\rightarrow Na_2SO_4+2H_2O\)
Theo PT: \(\Rightarrow m_{NaOH}=\text{0,0075}.2.40=0,6\left(g\right)\)
\(\Rightarrow m_{ddNaOH}=\frac{0,6.100}{15}=4\left(g\right)\)
\(\Rightarrow V_{NaOH}=\frac{m_{ddNaOH}}{d}=\frac{4}{1,05}=3,81\left(ml\right)\)