When a 2.66-g sample of solid ammonium chloride dissolves in 37.8 g of water in a coffee-cup calorimeter (see above figure) the temperature falls from 21.00 oC to 16.68 oC. Calculate H in kJ/mol NH4Cl for the solution process. NH4Cl(s) NH4+(aq) + Cl-(aq) The specific heat of water is 4.18 J/g-K. Hsolution = kJ/mol NH4Cl.

Q: When a 2.66-g sample of solid ammonium chloride dissolves in 37.8 g of water in a coffee-cup…

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