83Thermo-Stoi

83Thermo-Stoi - 2(s 2H 2 O(l Ca(OH 2(s C 2 H 2(g ∆ H =...

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STOICHIOMETRIC HEAT OF REACTION GCHEM I LAB CONCEPT PROBLEMS THERMODYNAMIC EQ: C 3 H 8 (g) + 5O 2 (g) 3CO 2 + 4H 2 O(l) H = 2,220. 0 kJ/mole RELATIONSHIPS: 2,220.0 kJ 2,220.0 kJ 2220.0 kJ 2220.0 kJ 1 mole C 3 H 8 5 mole O 2 3 mole CO 2 4 mole H 2 O 1) How much heat energy (kJ) will be released when 45.60 grams of C 3 H 8 gas is burned in excess oxygen ? 45.60 grams C 3 H 6 1 mole C 3 H 6 2,220.0 kJ = 2,296. kJ 44.09 grams C 3 H 6 1 mole C 3 H 6 2) What amount of heat energy (kJ) is released during forming of 15.0 grams of HNO 3 per the following reaction: 3NO 2 (g) + H 2 O(l) 2HNO 3 (aq) + NO(g) H = – 308.1 kJ ? (ans: - 36.72 kJ) 3) Water was reacted {CaC
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Unformatted text preview: 2 (s) + 2H 2 O(l) Ca(OH) 2 (s) + C 2 H 2 (g) ∆ H = + 226.0 kJ} w/excess CaC 2 to produced 444.0 k J of heat. How many grams of water ( MM =18.03g/mole) were reacted ? 4) What quantity of heat (kJ) is absorbed when 250.6 grams of water changes from solid to liquid state as follows: H 2 O (s) H 2 O (l) ∆ H = + 6.02 kJ 5) What amount of heat energy (J) is released in the complete combustion of 1.20 x 10 +3 grams of C 3 H 4 per the following reaction: C 3 H 4 (g) + 4O 2 (g) 3CO 2 (g) + 2H 2 O(l) ∆ H = – 1,939.0 kJ jpechunf05/2003...
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