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True of false? The Ksp value of PbSO4 will increase as the temperature of the solution increases?
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- The Ksp for ZnS(s) is 2.4 × 10–22 at a certain temperature. The solubility of ZnS(s) in water at this temperature is -1.5 x 10-11 -4.8 x 10-22 -1.2 x 10-22 -2.4 x 10-22 -none of theseCalculate the %(w/w) of solute and solvent in an alloy containing 15.0 g copper and 10.0 g nickel.Table 2. Gibbs Free Energies of formation (kJ), ∆G°f, for Ions in 1M Solution and Ionic Solids cation anions Cl- -131.228 I- -51.57 NO3- -108.74 SO4-2 -744.53 Na+ -261.905 -384.138 -286.06 -367.00 -3646.85 W10 ∆G°f of water = -237.129 kJ/mol Calculated values of ∆G°rxn and the ∆Grxn of each box, Predicted results (ppt or no ppt). Observations (Rxn or No Rxn). S or support and R for Refute Cations Anions Cl- I- NO3- SO4-2 Na+(∆G°rxn) Na+ (∆Grxn) Na+ (ppt or no ppt) Na+ (Rxn or No Rxn) NO RXN NO RXN NO RXN NO RXN Na+ (S or support and R for Refute)
- The Ksp of Cu3 (AsO4)2 at 25^0C is 7.6×10^-36. What is the molar solubility of Cu3 (AsO4)2 in water at 25^0C?Table 2. Gibbs Free Energies of formation (kJ), ∆G°f, for Ions in 1M Solution and Ionic Solids Cations Cl--131.228 I--51.57 NO3--108.74 SO4-2-744.53 Ag+77.107 AgCl -109.789 -66.19 -33.41 -618.41 Calculated values of ∆G°rxn and the ∆Grxn of each box, Predicted results (ppt or no ppt).Observations (Rxn or No Rxn). S or support and R for Refute Cations Cl- I- NO3- SO4-2 Ag+ Ba+2* A 1.20 g sample of unknown compound is disolved in 50 g of CHe. The solution freezes at 4.92 C. Calculate the MW. (f.p of CH6= 5.48 C, K; of CHo=5.12 C/m)