what is the molarity and molality of a solution that is 36.0 %(m/m) HCL and has

Question

what is the molarity and molality of a solution that is 36.0 %(m/m) HCL and has a density of solution of 1.26 g/ml? different question what is greater in magnitude the lattice energyfor kI or the hydration energy of the ions K+ and I- another question the solution process for KI in water isendothermic a) what you expect KI to become more or less soluble astemperature is increased? what is the molarity and molality of a solution that is 36.0 %(m/m) HCL and has a density of solution of 1.26 g/ml? different question what is greater in magnitude the lattice energyfor kI or the hydration energy of the ions K+ and I- another question the solution process for KI in water isendothermic a) what you expect KI to become more or less soluble astemperature is increased?

Explanation / Answer

1000 grams of solution

36% of 360 grams of the 1000 is HCl: 360 g HCl*(1mol/ 36.5 g)= 9.863 moles HCl

1000g *(1 mL/1.26g) = 793.650794 mL of solution  and 740 grams of solvent (1000 - 360)

Molarity = 9.863 mol / 0.79365 L = 12.4 M
Molality = 9.863 mol / 0.740 kg solvent = 13.3 m

2)
Lattice energy is higher. This involves ionic-ionic attractionswhereas the latter involves interaction between ions and polarmolecules

a) KI should be more soluble as temperature is increased. Theincreased temperature will compensate for the heat required for thedissolution (it is endothermic)

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