The acidity constant of acetic acid is 1.8 × 10-5. Calculate the % error of the measured Ka value.
To calculate the percent error of the measured Ka value, you need a reference value or an accurate value of the Ka constant for acetic acid. Without the reference value, it is not possible to calculate the percent error.
Percent error is calculated using the formula:
Percent Error = (|(measured value - accurate value)| / accurate value) * 100%
In this case, the accurate value of the Ka constant for acetic acid is missing, so it is not possible to calculate the percent error.