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PL%20Worksheet%208

# PL%20Worksheet%208 - HCl aq NaHCO 3 s H 2 O l NaCl aq CO 2...

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PL Worksheet #8 17.5 Equilibrium Calculations 1. Given the following information at 25 Celsius: 3 H 2 ( g ) + C 3 H 2 ( l ) C 3 H 8 ( g ) K c = 1.65 * 10 −5 For a system that begins with 1.45 atm of H 2 and an excess of C 3 H 2 , solve for the final concentrations of each gaseous compound in atm. 2. Given the chemical reaction: N 2 H 2 ( g ) + 2 H 2 ( g ) 2 NH 3 ( g ) Reaches equilibrium when NH 3 = 0.500 atm and N 2 H 2 = H 2 = 0.100 atm, when the temperature is 45 Celsius. Solve for both K c and K p for this chemical reaction. 3. If the reaction in question 2 has a H = −58.5 kJ/mol, solve for K c at 95 Celsius. 17.6 LeChatlier’s Principle 4. List all the ways this reaction, when it is already at equilibrium, can be shifted to the right.

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Unformatted text preview: HCl ( aq ) + NaHCO 3 ( s ) H 2 O ( l ) + NaCl ( aq ) + CO 2 ( g ) ΔH = -129 kJ/mol 5. Write a K expression for the reaction in question 4, and show how your answer regarding changing pressure would ultimately shift it to the right. 6. Which of the above answers to question 4 would change the value for K in the reaction? Test 2 Concepts 7. Define the following terms: Activation energy: Transition state: Catalyst: Arrhenius equation: Inert gas: Reaction rate: Dynamic equilibrium:...
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