Question

A solution of 1.0 L saturated with Ag2CO3 at 5.0 ⁰C is filtered to remove the solid. Enough HCl (aq) is added to completely decompose the dissolved compound. The CO2 (g) that is generated is collected in a 19.0 mL vial and exerts a pressure of 114 mmHg at 25.0 ⁰C. a. Write the reaction for decomposing the silver carbonate with the acid. b. Determine the number of moles of CO2 that are produced. c. Determine the Ksp for silver carbonate at 25.0 ⁰C.

3. A solution of 1.0 L saturated with Ag2CO: at 5.0 °C is filtered to remove the solid. Enough HCI (aq) is added to completely decompose the dissolved compound. The CO2 (g) that is generated is collected in a 19.0 mL vial and exerts a pressure of 114 mmHg at 25.0 °C. a. Write the reaction for decomposing the silver carbonate with the acid. b. Determine the number of moles of CO2 that are produced. C. Determine the Ksp for silver carbonate at 25.0°C.

Answer 1

1. Ag2CO3 + 2HCL = 2 AgCL + H2O + CO2

2. Pv = nRT

n= PV/ RT

P = 114/760 = 0.15 atm

V= 19/1000= 0.019 L

T= 298 K

n= 0.15* 0.019/0.0821* 298

n= 0.116 mmoles

3. Ksp = Pco2= 0.15