Which change decreases DeltaG_rxn? N_2(g) + 1/2O_2(g) rightarrow N_2O(g) add a c

Question

Which change decreases DeltaG_rxn? N_2(g) + 1/2O_2(g) rightarrow N_2O(g) add a catalyst to the system decrease the partial pressure of N_2 decrease the partial pressure of N_2O decrease the partial pressure of O^2 What is the sign of DeltaS for this reaction? O_2(g) + 2H_2(g) rightarrow 2H_2O(g) DeltaS Greaterthan 0 DeltaS = 0 DeltaS Greaterthan 0 The sign of DeltaH is needed in order to predict the sign of DeltaS. For the reaction A(g) rightarrow B(g), Q_c = 15 and K_c = 5.5. Which statement is true? DeltaG and DeltaG* are both negative. DeltaG and DeltaG*are both positive. DeltaG is negative and DeltaG* is positive. DeltaG is positive and DeltaG* is negative. When DeltaGdegree_rxn is less than zero, the value of K is infinite. less than zero. between zero and one. greater than 1.

Explanation / Answer

64.

G = G° - RT*ln(Q)

dG = - RT*ln(Q)

Q = products / reactants

increasing products decreases dG

then, only C is incorrect

65.

3 mol of gases form 2 mol of gases, then this is getting ordered, that is, dS < 0

66.

if Q > K

then this faovur products

dG = dG° - RT*ln(Q)

so dG must be less than G°

id DGRxn is 0 ,tthis is in euqliibrium

then

K = 1

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