Question

Question #eebf3

Answer 1

`0.179` `M`

Explanation:

The way to find this is given by the formula `M_1V_1 = M_2V_2` for titrations

Therefore, the sulfuric acid is `0.3` `M` and `25` `mL` as Volume
i.e. `M_1 = 0.3` `M`, `V_1 = 25` `ml`; `V_2 = 42` `ml`; `M_2 =?`

`0.3 xx 25 = 42 * x`
where `x` is the molarity of sodium hydroxide

`7.5 = 42x`

`x = 0.17857` `M`