Chemistry (OER)
19th Edition
ISBN: 9781947172623
Author: OpenStax
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Chapter 5, Problem 24E
A 0.500-g sample of KCl is added to 50.0 g of water in a calorimeter (Figure 5.12). If the temperature decreases by 1.05 °C, what is the approximate amount of heat involved in the dissolution of the KCl, assuming the specific heat of the resulting solution is 4.18 J/g °C? Is the reaction exothermic or endothermic?
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The reaction: 2NO2(g) ⇌ N2O4(g) is an exothermic reaction, ΔH=-58.0 kJ/molrxn at 0°C the KP is 58.If the initial partial pressures of both NO2(g) and N2O4(g) are 2.00 atm:A) Is the reaction at equilibrium? If not, what is the value of Q?
B) Which direction will the reaction go to reach equilibrium?
C) Use an ICE table to find the equilibrium pressures.
The dissociation of the weak acid, nitrous acid, HNO2, takes place according to the reaction:
HNO2 (aq) ⇌ H+(aq) + NO2–(aq) K=7.2 X 10-4
When 1.00 mole of HNO2 is added to 1.00 L of water, the H+ concentration at equilibrium is 0.0265 M.A) Calculate the value of Q if 1.00 L of water is added?
B) How will reaction shift if 1.00 L of water is added?
Chapter 5 Solutions
Chemistry (OER)
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