1. Which of the following compounds are electrolytes? (check all that apply) PF5 N2O Na3PO4 Mg(C2H3O2)2 Magnesium diacet
Posted: Sat Jul 02, 2022 7:43 pm
1. Which of the following compounds are electrolytes?(check all that apply)
PF5
N2O
Na3PO4
Mg(C2H3O2)2 Magnesiumdiacetate
2. The solubility of cadmium cyanide is 1.70g/100mL ofwater at 25˚C.
Is 5.00g of Cd(CN)2 dissolved in 250mL of watersaturated, supersaturated or unsaturated?
unsaturated
supersaturated
saturated
3. Calculate the change in freezing point of water(Kfp = -1.86˚C/m) for 7.76 g of KCl,
dissolved in 50.0 g of water.
∆Tfp =Kfp * mparticles
PF5
N2O
Na3PO4
Mg(C2H3O2)2 Magnesiumdiacetate
2. The solubility of cadmium cyanide is 1.70g/100mL ofwater at 25˚C.
Is 5.00g of Cd(CN)2 dissolved in 250mL of watersaturated, supersaturated or unsaturated?
unsaturated
supersaturated
saturated
3. Calculate the change in freezing point of water(Kfp = -1.86˚C/m) for 7.76 g of KCl,
dissolved in 50.0 g of water.
∆Tfp =Kfp * mparticles