Kaplan Chemistry: Chapter 6 Equilibrium

Question 1

T/F Keq is temp dependent

Answer 1

true.

Question 2

delta G formula involving Keq

Answer 2

Go= -RTlnK

Question 3

according to le Chatelier principle, when the pressure of a system is INCREASED, the system will react in the direction that produces the ____ amount of moles of gas

Answer 3

LEAST moles of gas.

Question 4

formula for endothermic and exothermic reactions involving heat

Answer 4

endothermic reaction: reactant + HEAT —> product

exothermic reaction: reactant –> HEAT+ PRODUCT

Question 5

T/F: a new equilibrium is established every time you change the temperature

Answer 5

true. keq is temp dependent and thus if you change the temp, you cannot compare Q with the same Keq as used in a previous temperature.

Question 6

in an endothermic reaction, H is ___ and heat is a ____

in an exothermic reaction, H is ___ and heat is a ____

Answer 6

in an endothermic reaction, H is + and heat is a REACTANT

in an exothermic reaction, H is - and heat is a PRODUCT

Question 7

at lower temperatures, the ___ product is favored.

Answer 7

kinetic product.

Question 8

at higher temperatures, the ___ product is formed

Answer 8

thermodynamic product

Question 9

which product is more stable? Kinetic or thermodynamic

Answer 9

thermodynamic product is more stable, but the kinetic pathway requires a smaller gain of free energy to reach the transition state, which is why its formed first.