3. Consider the dissolution of 25.0 go of Kl in 100.0 mL of water. The following experimental data were collected for th

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3 Consider The Dissolution Of 25 0 Go Of Kl In 100 0 Ml Of Water The Following Experimental Data Were Collected For Th 1 (784.2 KiB) Viewed 35 times

3. Consider the dissolution of 25.0 go of Kl in 100.0 mL of water. The following experimental data were collected for this experiment. m (KI; g) V (H20; mL) T: (°C) T: (°C) d (H20; g-mL) C(CaCl2 solution; J/g-K) Coal (J/K) 25.0 100.0 22.2 8.8 1.00 4.184 3.8 a) Sketch a temperature vs. time plot for this process on a set of labeled axes. b) Given the data above, is the dissolution of Kl in water an exothermic or endothermic process? Explain your reasoning in one sentence. c) In the space below, draw and label an energy diagram for the dissolution of Kl using arrows to represent AH diss, Ahnyd, and AHSoln d) Given the following information, determine AHį for KI. Enthalpy of solution (AHseln) Enthalpy of hydration (AHnya) KI 20.3 kJ-mol-1 -623.4 kJ.mol-1 e) Write the chemical equation that corresponds to AHšoln for KI. Be sure to include the relevant states of matter, s, l, g, aq. f) Write the chemical equation that corresponds to AHaya for Kl. Be sure to include the relevant states of matter, s, l,g, aq. g) Write the chemical equation that corresponds to AHį for Kl. Be sure to include the relevant states of matter, s, l, g, aq. h) Show by appropriate manipulation and cancellation amongst the equations in questions e) and f) how Hess's law can be explicitly used to determine AH (in question g).