First slide

PH of strong acids and strong bases

Question

Four grams of NaOH solid are dissolved in just enough water to make 1 litre of solution. What is the [H⁺] of the solution?

Easy

A

10^-2 moles/litre
B

10^-1 moles/litre
C

10^-12moles/litre
D

10^-13moles/litre

Solution

[OH^-] = $\frac{\frac{4}{40}}{1} = 10^{- 1} M$
[H⁺] = 10^-13M.

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