You are interested in evaluating the thermochemistry of acid-base reactions.You mix 100.0 mL of 0.500 M H2SO4(aq) with 100.0 mL of 0.500 MSr(OH)2(aq) (both at 25.0 C) in a coffee cup calorimeter. The temperature of themixture rises to 31.4 C Part a) It can be said that per mole of acid in the above reaction:a) q rxn < H(rxn)b) q rxn > H(rxn)c) q rxn ≈ H(rxn)d) q rxn and H(rxn) are unrelated Part b) Assuming the reaction mixture behaves like pure water (c = 4.184 J/g-C andd = 1.00 g/mL) and no significant heat is lost to the calorimeter calculate q(the thermal energy change) for the above reaction.a) - 2.7 kJb) 1300. Jc) - 5.4 kJd) 5.4 kJ Part c) Based on the calculated q value from question 41, above, calculate the heatof reaction (H(rxn)) for the acid-base reaction.a) - 1.1 x 102 kJ/molb) 1300. J/molc) - 1.1 x 103 kJ/mold) 1.1 x 102 kJ/mol
You are interested in evaluating the thermochemistry of acid-base reactions.You mix 100.0 mL of 0.500 M H2SO4(aq) with 100.0 mL of 0.500 MSr(OH)2(aq) (both at 25.0 C) in a coffee cup calorimeter. The temperature of themixture rises to 31.4 C Part a) It can be said that per mole of acid in the above reaction:a) q rxn < H(rxn)b) q rxn > H(rxn)c) q rxn ≈ H(rxn)d) q rxn and H(rxn) are unrelated Part b) Assuming the reaction mixture behaves like pure water (c = 4.184 J/g-C andd = 1.00 g/mL) and no significant heat is lost to the calorimeter calculate q(the thermal energy change) for the above reaction.a) - 2.7 kJb) 1300. Jc) - 5.4 kJd) 5.4 kJ Part c) Based on the calculated q value from question 41, above, calculate the heatof reaction (H(rxn)) for the acid-base reaction.a) - 1.1 x 102 kJ/molb) 1300. J/molc) - 1.1 x 103 kJ/mold) 1.1 x 102 kJ/mol
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Chapter6: Thermochemisty
Section: Chapter Questions
Problem 6.132QP
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Question
You are interested in evaluating the thermochemistry of acid-base reactions.
You mix 100.0 mL of 0.500 M H2SO4(aq) with 100.0 mL of 0.500 M
Sr(OH)2(aq) (both at 25.0 C) in a coffee cup calorimeter. The temperature of the
mixture rises to 31.4 C
Part a) It can be said that per mole of acid in the above reaction:
a) q rxn < H(rxn)
b) q rxn > H(rxn)
c) q rxn ≈ H(rxn)
d) q rxn and H(rxn) are unrelated
Part b) Assuming the reaction mixture behaves like pure water (c = 4.184 J/g-C and
d = 1.00 g/mL) and no significant heat is lost to the calorimeter calculate q
(the thermal energy change) for the above reaction.
a) - 2.7 kJ
b) 1300. J
c) - 5.4 kJ
d) 5.4 kJ
Part c) Based on the calculated q value from question 41, above, calculate the heat
of reaction (H(rxn)) for the acid-base reaction.
a) - 1.1 x 102 kJ/mol
b) 1300. J/mol
c) - 1.1 x 103 kJ/mol
d) 1.1 x 102 kJ/mol
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