Question

f the solubility product 1. How many grams of Ag CrO4 will dissolve in pure water i constant for silver chromate is 1.1 x 1012. Use the following atomic masses, as needed, in your calculation: Ag-107.87, Cr-52.00; O-16.00 Determine the AHo for the following reaction, given the data provided: 4HCN+502-> 2H20+4CO22N Determine ASo (in J/mol K) for the reaction in problem 2._ Determine AG® in kJ/mol for the reaction in problem 2 2. 3. 4.

Answer 1

1.sol:

Ag₂CrO₄ = 2Ag⁺ + CrO₄^2-

s 2s s

Ksp = [2s]²[s] = 4s³ , Ksp= 1.1 x 10^-12 (given)

s³ = Ksp/4 = 1.1 x 10^-12 / 4 = 0.275 x 10^-2

s3= 0.275 x 10^-2  

3logs = log(0.275 x 10^-2) ; log s = -0.8536 ; s = antilog(-0.8536) = 14.01 x 10^-2 mol/L

hence , s = 14.01 x 10^-2 mol/L

S = 14.01 x 10^-2 x 331.74g/L = 46.48g/L , (Ag₂CrO₄ mol.wt. = 331.74 g/mol)

hence, 46.48g Ag₂CrO₄ will dissolve in 1L water.

2.ans Data value for H , S ,G calculation not given.