8. the standard enthalpy of formation of rbf(s) is –557.7kj/mol and the standard enthalpy of formation of rbf(aq, 1 m) is –583.8 kj/mol. determine the enthalpy of solution of rbf and indicate whether the solution temperature will increase or decrease when rbf is dissolved in water.

Explanation:

Given

The enthalpy of formation of RbF (s) is –557.7kJ/mol

The standard enthalpy of formation of RbF (aq, 1 m) is –583.8 kJ/mol

The enthalpy of solution of RbF = Enthalpy of RbF (aq) - Enthalpy of formation of RbF (s)

= -583.8 - (-557.7)  kJ/mol

= -26.1 kJ/mol

The enthalpy is negative which means that the temperature will rise when RbF is dissolved.

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answer: h+ its less than oh

explanation: