\(n_{HNO_3}=0,6.0,1=0,06\left(mol\right)\)
\(n_{Ba\left(OH\right)_2}=0,4.0,5=0,02\left(mol\right)\)
\(Ba\left(OH\right)_2+2HNO_3\rightarrow Ba\left(NO_3\right)_2+2H_2O\)
\(\Rightarrow Ba\left(OH\right)_2\) hết,\(HNO_3\) dư
\(V_{dd}=0,6+0,4=1l\)
\(n_{Ba\left(NO_3\right)_2}=0,02\left(mol\right)\Rightarrow C_{Ba\left(NO_3\right)_2}=\dfrac{0,02}{1}=0,02M\)
\(n_{HNO_3dư}=0,06-0,02.2=0,02\left(mol\right)\Rightarrow C_{HNO_3}=\dfrac{0,02}{1}=0,02M\)
Tổng nồng độ cation:
\(\left[Ba^{2+}\right]+\left[H^+\right]=0,2+0,2=0,4M\)