Chemistry

Question

Which is a saturated solution?

A)40g NH4Cl in 100g water at 50°C
B)2g SOz in 100g water at 10°C
C)52g KCl in 100g water at 80°C
D)120g KI in 100g water at 20°C

1 Answer

  • Answer:

    C)52g KCl in 100g water at 80°C

    Explanation:

    A saturated solution is one that contains as much solute as it can dissolve in the presence of excess solute at that particular temperature.

    A solutibility curve is a graph that shows the variability with temperature of the solubility of a solute in a given solvent. A solutibility curve can provide information of whether a solution formed frommthe solute and solvent are saturated or not at a given temperature.

    From the solubility curve in the attachment below:

    A) A saturated solution of NH₄Cl will contain about 52 g solute per 100 g sat 50 °C. Thus, a solution of 40 g NH₄Cl in 100 g water at 50 °C is an unsaturated solution.

    B) A saturated solution of SO₂ at 10°C will contain about 70 g of solute in 100 g of water. Thus a solution of 2g SO₂ in 100g water at 10°C is an unsaturated solution.

    C) A saturated solution of KCl at 80 °C will contain about 52 g of solute in 100 g of water. Thus, a solution of 52g KCl in 100g water at 80°C is a saturated solution.

    D) A saturated solution of Kl at 20 °C will contain about 145 g of solute in 100 g of water. Thus, a solution of 120g KI in 100g water at 20°C is an unsaturated solution.

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