rate and equilibrium

[BoneMental]

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Let's use this fun little equation:

(ATP) + (water)<--> (ADP) + (inorganic phosphate) + (protons) + (heat)

I know that the equilibrium will shift towards more reactants if temperature is increased.

However, I was taught that the rate constant k always increases with temperature. Does this the rates of both reactions (forward and reverse) occur faster, but one is favored? Or something?

 

[justhanging]

Let's use this fun little equation:

(ATP) + (water)<--> (ADP) + (inorganic phosphate) + (protons) + (heat)

I know that the equilibrium will shift towards more reactants if temperature is increased.

However, I was taught that the rate constant k always increases with temperature. Does this the rates of both reactions (forward and reverse) occur faster, but one is favored? Or something?

Both the forward and the reverse reaction will occur faster but one would be favored. Remember that equilibrium constant K = k1/k-1 = rate constant in the forward direction/ rate constant in the reverse direction. One direction wins out and the equiblibrium constant CHANGES.

 

[GreenRabbit]

Does this the rates of both reactions (forward and reverse) occur faster, but one is favored? Or something?

Exactly. Remember that the equilibrium K is composed of forward and reverse little k's. The little k's will always increase with temperature, but the big K will respond to generation / removal of heat.

 

[BoneMental]

Thanks guys! I just wanted to make sure. I'm kind of freaking out because my test date is right around the corner. ^_^