Question 9

Q9Multiple choice

K a , K a and K a are the respective ionisation constants for the following 1 2 3 reactions. H S  H + HS + – HS  H + S – + 2– + 2– H2S  2H + S The correct relationship between K a1 , K a 2 and K a 3 is

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(i) K a = Ka × K a 3 1 2