1a Determine the value of Kc for the reaction below given Kp at 345 K 3H2 g N2 g 2NH3 g Kp 5 9 x 105 atm 2 CH 201 Self Study Worksheet 5 Kc Kp RT ng with ng 2 4 mol gas 2 mol gas Kc 5 9 x 105 atm 2 0 0821 atm K M x 345 K 2 4 7 x 108 M 2 1b Determine the value of Kp for the reaction below given Kc at 200 C CaCO3 s CaO s CO2 g Kc 3 93 x 10 11 M Kp Kc RT ng with ng 1 0 mol gas 1 mol gas Kp 3 93 x 10 11 atm 2 0 0821 atm K M x 473 K 1 1 52x10 9 atm 2 Given the following information A B C 2B C D K1 56 61 K2 3 205 103 calculate K for the reaction below Show the logic of how the reactions are added 2 Double reaction 1 K1 Flip reactiton 2 1 K2 2A D C 2A 2B 2C C D 2B 2A D C K1 56 61 K2 3 205 103 K K1 2 K2 56 61 2 3 205x103 0 9999 3 According to the following reaction PCO2 2 87 PH2 4 75 atm and PH2O 0 0300 atm at equilibrium What is the partial pressure of CO at equilibrium CO2 g H2 g CO g H2O l KP 3 00 10 4 Do not include H2O l as it is not part of the equilibrium expression The P is for H2O g which isn t in this reaction KP PCO PCO2PH2 PCO 2 87 4 75 3x10 4 PCO 4 09x10 3 atm 4 At some temperature 0 400 mol NO 0 300 mol Cl2 and 0 700 mol ClNO are introduced into a 20 0 L flask and allowed to react What is the value of Kc for the following reaction at this temperature if the equilibrium mixture contained 0 900 mol ClNO 2NO g Cl2 g 2ClNO g Initial M 0 0200 0 0150 M 0 0100 0 0050 Equil M 0 0100 0 0100 0 0350 0 0100 0 0450 K ClNO 2 Cl2 NO 2 0 0450 2 0 0100 0 0100 2 2 025 x 103 M 1 CH 201 Self Study Worksheet 5 5 a Find the equilibrium concentrations of the following reaction when 500 mL of 1 500 M NaC2H3O2 are mixed with 500 mL of 1 500 M HClO Remember volumes are being mixed so use the dilution formula to find the initial concentrations C2H3O2 HClO 500 mL x 1 5 M 1000 mL 0 750 M C2H3O2 1 aq HClO aq HC2H3O2 aq ClO1 aq Kc 1 9 10 3 Initial M M Equil M 0 75 x 0 75 x 0 75 x 0 75 x 0 x x 0 x x K x 2 0 75 x 2 1 9x10 3 x 3 13x10 2 C2H3O2 1 HClO 0 719 M HC2H3O2 ClO1 3 13x10 2 M 5b How many moles per liter of ClO1 must be removed to have an equilibrium concentration of 0 650 M for C2H3O2 1 Initial M M Equil M C2H3O2 1 aq HClO aq HC2H3O2 aq ClO1 aq Kc 1 9 10 3 0 719 0 0313 x 0 069 0 069 0 650 0 1003 x K 0 1003 0 1003 x 0 650 2 1 9x10 3 0 0313 0 069 0 1003 0 719 0 069 0 650 x 9 23x10 2 moles of ClO1 must be removed Check your answer with K K 0 1003 0 008 0 65 2 1 9x10 3 6a What is the value of Kp for the reaction below at 500 C given Kp 167 atm at 1078 K and H 178 1 kJ mol CaCO3 s CaO s CO2 g ln K2 ln 167 178 1 kJ mol 0 008134 kJ K mol 1 1078K 1 773K ln K2 ln K1 Ho R 1 T1 1 T2 ln K2 2 7227 K2 0 0657 atm 6b What is the equilibrium pressure of CO2 in torr for this reaction at 500 C K2 0 0657 atm PCO2 x 1 1 PCO2 0 0657 atm x 760 torr atm 49 9 torr 7 CH101 LeChatelier s Review The reaction for the formation of glucose from ethanol and carbon dioxide is shown below The reaction is at equilibrium 2 C2H6O aq 2CO2 g C6H12O6 aq H 0 a Which way does the reaction shift when cooled A right B left C neither a Which way does the reaction shift when CO2 is added A right B left C neither a Which way does the reaction shift when C2H6O is removed A right B left C neither a Which way does the reaction shift the pressure is increased A right B left C neither
View Full Document
Unlocking...