Question

Calculate the standard enthalpy change for the dissolution of 3.00 moles of sodium chloride in water, given that the molar enthalpy of solution of sodium chloride is -3.88 kJ/mol.

Answer 1

To calculate the standard enthalpy change for the dissolution of 3.00 moles of sodium chloride in water, you can use the following formula:Standard enthalpy change =  moles of solute    molar enthalpy of solution In this case, the moles of solute is 3.00 moles, and the molar enthalpy of solution is -3.88 kJ/mol. Plugging these values into the formula, we get:Standard enthalpy change =  3.00 moles    -3.88 kJ/mol  = -11.64 kJSo, the standard enthalpy change for the dissolution of 3.00 moles of sodium chloride in water is -11.64 kJ.