Ionic EquilibriumHard
Question
If Ka1 and Ka2 of H2SO4 are 10-2 and 10-6 respectively then
Options
A.Ka1 > Ka2 because it is easy to abstract H+ from H2SO4 and less easy to abstract H+ from HSO4-.
B.Ka1 and Ka2 may be measured in acetic acid.
C.Ka1 and Ka2 are measured in H2O.
D.the H+ ion conc. of 0.01 M H2SO4 will be less than 0.02 M.
Solution
H2SO4 is a strong acid and it completely dissociated in H2O. Hence its and are determined in CH3COOH.
Also H2SO4 is neutral while HSO4- because the - ve charge has more affinity towards H+ ion. Hence choices (A) and (B) are correct while (C) is incorrect. As H2SO4 is completely dissociated in water so a 0.01 M H2SO4 is completely dissociated and its [H+] ion conc. will be equal to 0.02 M.
Hence choice (D) will be incorrect.
Also H2SO4 is neutral while HSO4- because the - ve charge has more affinity towards H+ ion. Hence choices (A) and (B) are correct while (C) is incorrect. As H2SO4 is completely dissociated in water so a 0.01 M H2SO4 is completely dissociated and its [H+] ion conc. will be equal to 0.02 M.
Hence choice (D) will be incorrect.
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