100 ml of 0.1 M NaCl and 100 ml of 0.2 MNaOH are mixed. What is the change in pH of NaCI solution ?

100 ml of 0.1 M NaCl and 100 ml of 0.2 MNaOH are mixed. What is the ch

1.	100 ml of 0.1 M NaCl and 100 ml of 0.2 MNaOH are mixed. What is the change in pH of NaCI solution ?
Answer» Some `KMnO_4`is LEFT unreacted 0.02 M `MN^(2+)` ions are present in the solutions `K_2SO_3` is PARTIALLY left unreacted Newly formed `SO_4^(2-)` has 0.05 M cocentration Solution :`100xx0.2 =20` meq `O_3^(2-)` `100xx0.5 =50`meq `MnO_4^(-)` `:. SO_3^(2-)` in limiting REAGENT `MnO_4^(-)` left = 30 meq `:.[Mn^(+2)]=(20//5)/200=0.05M` `[SO_4^(-2)]=(20//2)/200 = 0.05M`