$\alpha(HCOOH)=\dfrac{1.100}{50}=2\%$
Giả sử $C_{M_{H_2SO_4}}=C_{M_{HCOOH}}=0,1M$
- Dung dịch $H_2SO_4$:
$[H^+]= 2C_{M_{H_2SO_4}}=0,2M$
$\Rightarrow pH=-lg0,2=0,7=x$
- Dung dịch $HCOOH$:
$C_{\text{phân li}}=1.2\%=0,02M$
$\Rightarrow [H^+]=0,02M$
$\Rightarrow pH=-lg0,02=1,7=y$
$\Rightarrow y-x=1$ (mối quan hệ)