Two Solutions,50

question 63

Multiple Choice

Two solutions,50.0 mL of 1.00 M BaCl₂(aq) and 50.0 mL of 1.00 M Na₂SO₄(aq) ,both initially at 21.5 °C,are added to a calorimeter with a total heat capacity,after the solutions are added,of 1.10 kJ/ °C and the temperature rises to 22.7 °C.Determine q_rxn per mole of BaSO₄(s) formed in the reaction.

• A)-26.4 kJ/mol
• B)+26.4 kJ/mol
• C)-2.64 kJ/mol
• D)+2.64 kJ/mol

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