Ch 5 review

Ch 5 review - Q5.112 = Ch 4 + Ch 5 Consider two solutions:...

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Q5.112 = Ch 4 + Ch 5 Consider two solutions: 50.0 ml of 1.00 M CuSO4(aq) and the other 50.0 mL of 2.00 M KOH (aq). When the two solutions are mixed in a constant-pressure calorimeter, a precipitate forms and the temperature of the mixture rises from 21.5 deg C to 27.7 deg C. A) Before mixing, how many grams of Cu are present in the solution of CuSO4? B) What is the precipitate?
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Q5.112 C) Write complete molecular and net ionic equations for the reaction that occurs upon mixing. D) Calculate ΔHrxn that occurs on mixing. Assume Ccal = 0, total volume is additive, specific heat and density of solution are the same as water.
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Forming acetylene Calculate Δ H for the reaction 2 C( s ) + H2( g ) → C2H2( g ) given the following chemical equations and their respective enthalpy changes: Answer: 226.8 kJ
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Identifying Rxns associated with ΔHf For which of the following reactions at 25°C would the enthalpy change represent a standard enthalpy of formation? For each that does not, what changes are needed to make it an equation whose Δ H is an enthalpy of formation?
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This note was uploaded on 04/05/2012 for the course CHEM 101 taught by Professor Farahh during the Spring '02 term at UNC.

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Ch 5 review - Q5.112 = Ch 4 + Ch 5 Consider two solutions:...

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