\(m_{H_2SO_4}=\dfrac{98.1,84.2}{100}=3,6064\left(gam\right)\Rightarrow n_{H_2SO_4}=\dfrac{3,6064}{98}=0,0368\left(mol\right)\)
Ta coi \(H_2SO_4\) điện li hoàn toàn 2 nấc.
\(H_2SO_4\rightarrow2H^++SO_4^{2-}\)
0,0368-->0,0736
\(\Rightarrow\left[H^+\right]=\dfrac{0,0736}{3}=0,02M\)