2. If the accepted enthalpy change value for the dissolving of sodium hydroxide in water is −44.2 kilojoules per mole, determine the percent error of the experimental value that you calculated in Part I. Show your work.
(experimental - actual value) / actual value × 100 %
What is the experimental value you found? Plug that into the equation and solve.
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To determine the percent error of the experimental value, you first need to calculate the difference between the experimental value and the accepted value. Then, divide this difference by the accepted value and multiply by 100% to express it as a percentage.
Given:
Accepted enthalpy change value (actual value) = -44.2 kJ/mol
Experimental value = ?
Let's assume the experimental value is x kJ/mol.
To calculate the percent error, you can use the formula:
Percent error = ((Experimental value - Actual value) / Actual value) × 100%
Substituting the given values:
Percent error = ((x kJ/mol - (-44.2 kJ/mol)) / (-44.2 kJ/mol)) × 100%
Simplifying:
Percent error = ((x + 44.2) / 44.2) × 100%
Now, you can calculate the percent error once you have the experimental value.