Question

In: Chemistry

Which of the following definitively describes a spontaneous process? a. -delta G b. - delta H...

Which of the following definitively describes a spontaneous process?

a. -delta G

b. - delta H

c. + delta H

d. + delta G

Which of the following statements is true

a. exothermic processes decrease the entropy of the surroundings

b. none are true

c. deltaSuniv is always decreasing for spontaneous process

d. free atoms have greater entropy than molecules

Solutions

Expert Solution


Related Solutions

predict the signs of delta G, delta H, delta S, of the system for the following...
predict the signs of delta G, delta H, delta S, of the system for the following processes a)Ammonia melts at -60 degrees Celcius b) ammonia melts at -77 Celcius (normal melting point of Ammonia) c) ammonia melts at 100 Celcius
Use delta H f and S to calculate delta G rxn (delta g not sys) at...
Use delta H f and S to calculate delta G rxn (delta g not sys) at 25 C for the reaction below: 4KClO3 (s) --> 4KClO4 (s) + KCL (s) Delta H not f KCLO3 = -397.7 kj/mol; KCLO4 = -432.8 kJ/mol; KCL = -436.7 kJ/mol S KCLO3 = 143.1 kJ/mol ; KCLO4= 151.0 kJ/mol; KCL = 82.6 kJ/mol
Calculate delta H for the reaction H(g) + Br(g) = HBr(g), given the following information: H2(g)...
Calculate delta H for the reaction H(g) + Br(g) = HBr(g), given the following information: H2(g) + Br2(g) = 2HBr(g) delta H = -72 kJ H2(g) = 2H(g) delta H = +436 kJ Br2(g)= 2Br(g) delta H = +224 kJ
outline a lab experiment which could be done in order to determine delta H, delta G...
outline a lab experiment which could be done in order to determine delta H, delta G and dellta S of dissolution of Urea
Estimate delta Grxn for the following reaction at 427K. HCN(g)+2H2------->CH3NH2(g) delta H= -158.0Kj delta S= -219.9...
Estimate delta Grxn for the following reaction at 427K. HCN(g)+2H2------->CH3NH2(g) delta H= -158.0Kj delta S= -219.9 j/k +64.1kJ -64.1kJ -252kJ +61.9KJ +252Kj
In which of the following processes is (delta)H = (delta)E? Why? (a) Two moles of ammonia...
In which of the following processes is (delta)H = (delta)E? Why? (a) Two moles of ammonia gas are cooled from 325 C to 300 C at 1.2atm (b) One gram of water is vaporized at 100C and 1 atm. (c) A mole of nitrogen gas reacts with a mole of oxygen gas to form two moles of nitric oxide gas in a 40L container. (d) Calcium carbonte is heated to form calcium oxide and carbon dioxide in a container with...
Consider the equilibrium CH4(g) + H2O(g) <--> CO(g) + 3H2(g), where delta h= 206 KJ. Which...
Consider the equilibrium CH4(g) + H2O(g) <--> CO(g) + 3H2(g), where delta h= 206 KJ. Which of the following disturbances will NOT cause the system to shift to the right to reestablish equilibrium? A.) The partial pressure of CH4 increases. B.) The partial pressure of CO decreases. C.) The volume decreases. D.) The temperature increases. E.) All of these will cause the system to shift to the right.
Given the following reaction: 2N2O3 (g) ç==è 2NO2 (g) + O2 (g) Delta H = 322...
Given the following reaction: 2N2O3 (g) ç==è 2NO2 (g) + O2 (g) Delta H = 322 KJ State which way the equilibrium will shift under the following conditions: Lower temp Higher volume Condense N2O3 Add O2
Given the following reaction: 2N2O3 (g) ç==è 2NO2 (g) + O2 (g) Delta H = 322...
Given the following reaction: 2N2O3 (g) ç==è 2NO2 (g) + O2 (g) Delta H = 322 KJ State which way the equilibrium will shift under the following conditions: Lower temp Higher volume Condense N2O3 Add O2
If delta H rxn is -75.2 kJ, 2NO(g) + Cl2 (g) <---> 2NOCl(g)
If delta H rxn is -75.2 kJ, 2NO(g) + Cl2 (g) <---> 2NOCl(g) A scientist places four moles of nitrogen monoxide and two moles of chlorine gas into flask A and the same amounts into Flask B, then allows the systems to reach equilibrium. Flask A is at 25 degrees Celsius and Flask B is at 200 degrees Celsius A) In which flask will the reaction occur faster? Explain. B) In which flask will the reaction occur to a greater...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT