- Sep 30, 2004
- Uni Grad
Share your MC Answers here
It ionises fully because of the fact that its a weak acid. Consider the equilibrium reaction in which the hydrogen ipns are produced. As the hydrogen ions are removed due to the hydroxide of the base. More of the acid ionises, hence it has to do with the amount of protons not degree of ionisation.Question 15 depends if you assume that the weak acid fully ionises or partially ionises. From the 2010 paper, there was a multiple choice question that assumed full ionisation of weak acids. Therefore, I assumed that the hsc expects you to say that weak acids fully ionises. Therefore, answer for 15 is A (I hope).
No...Citric acid requires lots because it's triprotic. An acid sample that is weak will not ionise fully.Yupp, because theyre both monoprotoc, the degree of ionisation woll affect the end point, not the volume needed. Eg citric acid requires alot of strong base to neutralise despite the fact it is relatively weak.