Question

A burette was improperly read to 1 decimal place giving a reading of 21.7 mL. If the actual volume is 21.86 mL, what is the percent error caused by this mistake?

Answer 1

Answer : The percent error caused by this mistake is, 0.73%

Solution : Given,

Actual volume = 21.86 ml

Measured volume = 21.7 ml

Formula used for percent error :

$\%\text{ Error}=\frac{(\text{Actual volume}-\text{Measured volume})}{\text{Actual volume}}\times 100$

Now put all the values in this formula, we get the percent error.

$\%\text{ Error}=\frac{(21.86-21.7)ml}{21.86ml}\times 100=0.73\%$

Therefore, the percent error caused by this mistake is, 0.73%