B) The student uses her results to calculate the enthalpy change for dissolving potassium hydroxide in water. She compares her value with a data book value. Student's value = – 32kJ/mol. Data book value = – 55kJ/mol. There are no errors in the student's method or in the calculation. Suggest two reasons why the student's value differs from the data book value.

B) The student uses her results to calculate the enthalpy change for d

1.	B) The student uses her results to calculate the enthalpy change for dissolving potassium hydroxide in water. She compares her value with a data book value. Student's value = – 32kJ/mol. Data book value = – 55kJ/mol. There are no errors in the student's method or in the calculation. Suggest two reasons why the student's value differs from the data book value.
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