Concept explainers
Interpretation:
Percentage error in another experiment, a sample of acetic acid consists of
Concept introduction:
Difference between experimental value and accepted value is defined Error. Formula of percentage error is used to calculate slight manufacturing errors in measuring instruments, which is

Answer to Problem 19STP
Correct answer: Option (b ),
Explanation of Solution
Reason for correct option:
The known table is:
Percentage by mass of carbon, hydrogen, and oxygen in selected compounds | |||
Compound | %H | %C | %O |
Carbonic acid | |||
Acetic acid | |||
Methanol | |||
Methanol | |||
Isopropanol |
The experimental value is
So for the calculation of percentage error-
The percentage error for the sample is
Reasons for incorrect options:
Option (a) the given option,
Option (c)the given option,
Option (d) the given option,
Option (e) the given option,
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