Question #84fcd

1 Answer
Feb 26, 2017

Answer:

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.

www.dartmouth.edu

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.