Problem: The addition of hydrochloric acid to a silver nitrate solution precipitates silver chloride according to the reaction:AgNO3(aq) + HCl(aq) → AgCl(s) + HNO3(aq)When 50.0 mL of 0.100 M AgNO3 is combined with 50.0 mL of 0.100 M HCl in a coffee-cup calorimeter, the temperature changes from 23.40˚C to 24.21˚C. Calculate ΔHrxn for the reaction as written. Use 1.00 g/mL as the density of the solution and Cs = 4.18 J/(g • ˚C) as the specific heat capacity of the solution.

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FREE Expert Solution

Step 1

Total volume = 50.0 mL + 50.0 mL = 100.0 mL

m = 100 mL ×1.00 g1 mL = 100 g


q = mcTq = (100 g)(4.18 Jg·°C)(24.21°C - 23.40°C)

q = 338.58 J


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Problem Details

The addition of hydrochloric acid to a silver nitrate solution precipitates silver chloride according to the reaction:

AgNO3(aq) + HCl(aq) → AgCl(s) + HNO3(aq)

When 50.0 mL of 0.100 M AgNO3 is combined with 50.0 mL of 0.100 M HCl in a coffee-cup calorimeter, the temperature changes from 23.40˚C to 24.21˚C. Calculate ΔHrxn for the reaction as written. Use 1.00 g/mL as the density of the solution and Cs = 4.18 J/(g • ˚C) as the specific heat capacity of the solution.

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Based on our data, we think this problem is relevant for Professor Hoyt's class at UOFL.