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SOLVED: 5.0  g of NaOH was dissolved in 80  mL of water. The temperature increased from 27.0^∘C to 70.0^∘C. Calculate qH 2 O, then estimate the enthalpy change for the dissolution of NaOH. Assume the heat capacity of the solution is only from the water.Specific heat of water: 4.184  J / g^∘C Molar heat capacity of water: 75.38 J / mol^∘C Density of water: 1  g / mLUse the following molar masses for your calculations: H2O: 18  g / mol NaOH: 40  g / mol
SOLVED: 5.0  g of NaOH was dissolved in 80  mL of water. The t…
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The dissolution of calcium chloride in water CaCl2(s) ⟶Ca^2 (a q) 2 Cl^-(aq) is used in first-aid hot packs. In these packs, an inner pouch containing the salt is broken, allowing the salt to dissolve in the surrounding water (a) Calculate the standard enthalpy change ΔH^∘ for this reaction, using data from Appendix D. (b) Suppose 20.0  g CaCl2 is dissolved in 0.100  L water at 20.0^∘ C. Calculate the temperature reached by the solution, assuming it to be an ideal solution with a heat capacity c
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