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1. Endothermic reaction ( reaction which gains heat) moves in forward direction (towards) product on increasing temperature.
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1. The endothermic (i.e. AH is positive) reaction 3A+B = C is heated from 35°C to...
1. Calculate AH° and AG', using data in Appendix C. Determine whether each reaction is endothermic...
1. Calculate AH° and AG', using data in Appendix C. Determine whether each reaction is endothermic or exothermic, and spontaneous or nonspontaneous. a) 2PbO(s) + N2(g) → 2Pb(s) + 2NO(g) b) CS2(1) + 2H20(1) - CO2(g) + 2H,S(9)
2) AH corresponds to an process. a) negative, exothermic b) negative, endothermic c) positive, exothermic d)...
2) AH corresponds to an process. a) negative, exothermic b) negative, endothermic c) positive, exothermic d) zero, exothermic none of these is correct e) 3) Which one of the following processes is exothermic? 2H2 (g) + O2 (g) C2H2 (I) a) 2H2O (g) b) C2H2 (g) c) CO2 (g) +2H2O (g) d) C2H2 (s) None of these e) CH4 (g) +202 (g) C2H2 (I)
4. Which of the following is consistent with a spontaneous endothermic reaction? (A) AH> 0, AS...
4. Which of the following is consistent with a spontaneous endothermic reaction? (A) AH> 0, AS <0, AG <0 (D) AH<0, AS > 0, AG>O (B) AH > 0, AS > 0, AG <0 (E) AH>0, AS <0, AG>0 (C) AH<0, AS <0, AG<0 5. For the reaction H, (g) +S (8) HS (g), AF- -20.2 kJ/mol and AS = +43.1 J/K mol. Which of these statements is true? (A) The reaction is only spontaneous at low temperatures. (B) The...
6,. Consider the following equilibrium for which AH> 0 (endothermic) 2NOGE 2NOCI(g) Cag) How will cach...
6,. Consider the following equilibrium for which AH> 0 (endothermic) 2NOGE 2NOCI(g) Cag) How will cach of the following affect the equilibrium mixture of the three gases? (shift left, shift right or no change) a) NOCKg) is added b) Clig) is removed e) NO(g) is added d) the reaction mixture is heated e) the volume of the reaction vessel is decreased f) the total pressure of the system is increased by adding argon (Ar) gas 7. Write the equilibrium-constant expressions...
For the following reaction. A g) + Bg) - C(g) AH - 35 kJ, in which...
For the following reaction. A g) + Bg) - C(g) AH - 35 kJ, in which direction (if any) would the reaction shift if the temperature were raised? to the right to the left no shit
A reaction that has a positive AH and a positive AS will be spontaneous at high...
A reaction that has a positive AH and a positive AS will be spontaneous at high temperatures spontaneous at low temperatures spontaneous at all temperatures nonspontaneous at all temperatures QUESTION 6 Which of the following statements is FALSE? Keg for a reaction written in reverse is the reciprocal of the key for the forward reaction A reaction quotient (Q) larger than Keq means that the reaction will shift toward reactants Chemical equilibrium indicates that reactants and products are present in...
7 8 and 9 6. Given the equilibrium pink blue When a solution of complex ion of Co* is heated, the solution becomes blue. (1 pt. each) a. Is AH for the forward reaction positive or negative? b. Whe...
7 8 and 9
6. Given the equilibrium pink blue When a solution of complex ion of Co* is heated, the solution becomes blue. (1 pt. each) a. Is AH for the forward reaction positive or negative? b. When the temperature is increased does the value for Kes Increase or decrease? 7. Acidified chromate solution is represented by the following equilibrium reaction (aq)+2 H(aq) Yellow 2 Cro CriO,2 (aq)+ HO (U) Orange Will this solution become yellow or orange is...
Consider the following endothermic reaction at equilibrium A(aq) + B(s) ⇌ C(aq) From the options listed,...
Consider the following endothermic reaction at equilibrium A(aq) + B(s) ⇌ C(aq) From the options listed, state which will cause the reaction to produce more products? (a) Increasing the temperature (b) Increasing the quantity of "A" (c) Increasing the quantity of "B" (d) Increasing the quantity of "C" (e) Adding a catalyst (f) Decreasing the temperature
Q(22) Kp=Kc when? A) The reaction is at equilibrium B) The reaction is exothermic C) The reaction is endothermic D)...
Q(22) Kp=Kc when? A) The reaction is at equilibrium B) The reaction is exothermic C) The reaction is endothermic D) all of the gasses present are at the same temperature E) the number of moles of gas on both sides of the balanced equation is the same. Q(23) HAH +A at the equilibrium (HA) = 1.65* 10-2 M and [H") = (A-) = 5.44*10-4 M at equilibrium. Kc = A) 1.7 X 10-1 C) 1.7 X 103 D) 1.7 X...
A mixture of 4.37 mol of N2 and 27.74 g of NO is heated in a closed vessel to 2000 °C. After heating, the total pre...
A mixture of 4.37 mol of N2 and 27.74 g of NO is heated in a closed vessel to 2000 °C. After heating, the total pressure of the mixture at equilibrium is 3.14 atm 2NOg) N,)0,) + K 0.101 at 2000 ° C In which direction does the reaction proceed after heating to 2000 °C? O The reaction proceeds toward products The reaction is at equilibrium. The reaction proceeds toward reactants Calculate the equilibrium partial pressures of N2, O2, and...
1. Calculate AH° and AG', using data in Appendix C. Determine whether each reaction is endothermic or exothermic, and spontaneous or nonspontaneous. a) 2PbO(s) + N2(g) → 2Pb(s) + 2NO(g) b) CS2(1) + 2H20(1) - CO2(g) + 2H,S(9)
2) AH corresponds to an process. a) negative, exothermic b) negative, endothermic c) positive, exothermic d) zero, exothermic none of these is correct e) 3) Which one of the following processes is exothermic? 2H2 (g) + O2 (g) C2H2 (I) a) 2H2O (g) b) C2H2 (g) c) CO2 (g) +2H2O (g) d) C2H2 (s) None of these e) CH4 (g) +202 (g) C2H2 (I)
4. Which of the following is consistent with a spontaneous endothermic reaction? (A) AH> 0, AS <0, AG <0 (D) AH<0, AS > 0, AG>O (B) AH > 0, AS > 0, AG <0 (E) AH>0, AS <0, AG>0 (C) AH<0, AS <0, AG<0 5. For the reaction H, (g) +S (8) HS (g), AF- -20.2 kJ/mol and AS = +43.1 J/K mol. Which of these statements is true? (A) The reaction is only spontaneous at low temperatures. (B) The...
6,. Consider the following equilibrium for which AH> 0 (endothermic) 2NOGE 2NOCI(g) Cag) How will cach of the following affect the equilibrium mixture of the three gases? (shift left, shift right or no change) a) NOCKg) is added b) Clig) is removed e) NO(g) is added d) the reaction mixture is heated e) the volume of the reaction vessel is decreased f) the total pressure of the system is increased by adding argon (Ar) gas 7. Write the equilibrium-constant expressions...
For the following reaction. A g) + Bg) - C(g) AH - 35 kJ, in which direction (if any) would the reaction shift if the temperature were raised? to the right to the left no shit
A reaction that has a positive AH and a positive AS will be spontaneous at high temperatures spontaneous at low temperatures spontaneous at all temperatures nonspontaneous at all temperatures QUESTION 6 Which of the following statements is FALSE? Keg for a reaction written in reverse is the reciprocal of the key for the forward reaction A reaction quotient (Q) larger than Keq means that the reaction will shift toward reactants Chemical equilibrium indicates that reactants and products are present in...
7 8 and 9
6. Given the equilibrium pink blue When a solution of complex ion of Co* is heated, the solution becomes blue. (1 pt. each) a. Is AH for the forward reaction positive or negative? b. When the temperature is increased does the value for Kes Increase or decrease? 7. Acidified chromate solution is represented by the following equilibrium reaction (aq)+2 H(aq) Yellow 2 Cro CriO,2 (aq)+ HO (U) Orange Will this solution become yellow or orange is...
Q(22) Kp=Kc when? A) The reaction is at equilibrium B) The reaction is exothermic C) The reaction is endothermic D) all of the gasses present are at the same temperature E) the number of moles of gas on both sides of the balanced equation is the same. Q(23) HAH +A at the equilibrium (HA) = 1.65* 10-2 M and [H") = (A-) = 5.44*10-4 M at equilibrium. Kc = A) 1.7 X 10-1 C) 1.7 X 103 D) 1.7 X...
A mixture of 4.37 mol of N2 and 27.74 g of NO is heated in a closed vessel to 2000 °C. After heating, the total pressure of the mixture at equilibrium is 3.14 atm 2NOg) N,)0,) + K 0.101 at 2000 ° C In which direction does the reaction proceed after heating to 2000 °C? O The reaction proceeds toward products The reaction is at equilibrium. The reaction proceeds toward reactants Calculate the equilibrium partial pressures of N2, O2, and...
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