Problem: A KCl solution containing 42 g of KCl per 100.0 g of water is cooled from 60  m^circ C to 0 ˚C m^circ C. What happens during cooling?

FREE Expert Solution
  • According to the graph, KCl's (blue line) solubility increases at temperature increases.

  • This tells us that more KCl will be dissolved as temperature increases

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A KCl solution containing 42 g of KCl per 100.0 g of water is cooled from 60 to 0 ˚C. What happens during cooling?

Solubility (g solute in 100 g H2)) vs Temperature (degree C). NaNO3 is a linear plot from (0, 73) to (35, 100). CaCl2 curves up exponentially from (0, 58) to (16, 70) to (22, 80) to (26, 90) to (27, 100). Pb(NO3)2 is a linear plot from (0, 37) to (35, 70) to (65, 100). NaCl is a linear plot from (0, 34) to (20, 35) to (40, 36) to (60, 37) to (80, 38) to (100, 39). KCl is a linear plot from (0, 28) to (20, 34) to (40, 39) to (60, 45) to (80, 51) to (100, 56). KNO3 curves up exponentially from (0, 14) to (10, 20) to (20, 30) to (30, 44) to (40, 64) to (50, 88) to (54, 100). K2Cr2O7 curves up slightly from (0, 7) to (10, 8) to (20, 11) to (30, 14) to (40, 22) to (50, 30) to (60, 38) to (70, 48) to (80, 58) to (90, 69) to (100, 80). KClO3 curvs up slightly from  (0, 4) to (10, 5) to (20, 8) to (30, 10) to (40, 14) to (50, 18) to (60, 23) to (70, 30) to (80, 37) to (90, 46) to (100, 56).

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