Question

Question #84fcd

Answer 1

The experimental value of `M_"B"` will be greater than the true value.

Explanation:

Assume that the reaction is

`"acid + base → salt + water"`

Then you have

`M_"A"V_"A" = V_"B"M_"B"`

and

`M_"B" = (M_"A"V_"A")/V_"B" = M_"A"/V_"B" × V_"A" = "constant" × V_"A"`

If `V_"A"` is the true value, then `M_"B"` will be the true value.

If there is a bubble in the buret tip, as in the picture above, you will think that you have added more acid than the true value.

Your value of `V_"A"` will be too large, so your calculated value of `M_"B"` will also be too large.