Which of the following describes the relationship between acid strength and ka value for weak acids?
a. when ka increases, the acid strength decreases
b. when ka increases, the acid strength increases
c. when ka increases, the acid strength decreases
d. when ka increases the acid strength is unchanged

I think the correct answer would be when ka increases, the acid strength increases. Ka is the product of hydronium ions and the [A-] ions  concentration over the acid concentration. Therefore, increasing the the Ka, the numerator in the definition would increase as well which correspondingly increase the strength of the acid.

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