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Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
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Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: 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?

Solution: 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?

Problem

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).

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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