[Khem442]

#1a
Calculate the standard enthalpy of reaction ∆H° for the following dissociation:
 
NH4Cl (s) → NH4⁺ (aq) + Cl (aq)
 
given the following data:  ΔH°f [NH4⁺(aq)] = -132.80kj/mol, ΔH°f [Cl⁻ (aq)] = ⁻167.2kj/mol, and ΔH°f [NH4Cl (s)] = -315.39kj/mol
 
 
#1b
If the final solution has a concentration of [NH4Cl] = 1.75M in 250 ml of solution, how much heat was absorbed in the process of dissociation?

[Borek]

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