Source A (Ms Tay) :
Concentrated solution has lesser water molecules, thus dissociation of the acid to produces lesser H⁺ ions. True for alkalis too. Conclusion: higher concentration of acid/alkali = lesser water = lesser dissociation producing lesser H⁺/OH⁻ ions.

Source B (Mr Yow) :
Concentrated Acid ionises more easily. More ionisation due to higher concentration.

Source C (Mrs Lam) :
Concentrated sulphuric acid lesser ionisation as compared to dilute sulphuric acid.

Source D (Ms Chan) :
Concentrated acids more dissociation than dilute acids, except for sulphuric acid. Reason being both reactants are liquid(or aqueous? =X), even if very little water used, you can't tell. Hydrogen chloride gas and water can only cause saturated concentrated hydrochloric acid, excess hydrogen chloride gas will be as it it. Conclusion: the dissociation depends on the nature/state of reactants.

Qns(a): For acids, higher concentration = lesser ionisation. True/False? Explain your answer.
Qns(b): Using your answer from (a), state whether alkalis follow the same explanation. If no, why?


any1 has the answer to my questions??? i cant seem to find the answer on the net. perhaps it's too BASIC. =S LOL! personally, ms chan's answer seems to be the most sensible one.