\(n_{HNO_2}=\dfrac{5,64.10^{19}}{6.10^{23}}=9,4.10^{-5}\)
\(n_{NO_2^-}=\dfrac{3,6.10^{18}}{6.10^{23}}=6.10^{-6}\)
\(HNO_2⇌H^++NO_2^-\)
Ta có :
\(n_{HNO_2}=9,4.10^{-5}+6.10^{-6}=10^{-4}\)
Độ điện li \(\alpha=\dfrac{6.10^{-6}}{10^{-4}}=0,06\)
b)
\(C_{M_{HNO_2}}=\dfrac{10^{-4}}{10^{-3}}=0,1M\)