Linked Questions

20 votes
2 answers

Can in any case the faster step of the reaction be rate determining?

I found a sentence in book which states the reverse step of this reaction ( I forgot what was it!) has the faster step as rate determining . Even Rate determining step-Wikipedia states: In ...
DSinghvi's user avatar
  • 1,806
10 votes
1 answer

Unit consistency in rate equations

I suppose that my problem is not one of great profundity, but it is an annoying one. The problem is related to the measurement units involved in rate equations of different order. Not being a chemist ...
Kalle's user avatar
  • 101
6 votes
1 answer

Rate and order confusion

I just learned about rate and order... I just want to confirm if these three ideas are correct: If the first elementary step is the slow step, will the stoichiometric coefficients of the reactants in ...
Eliza's user avatar
  • 2,413
4 votes
1 answer

How do you find the average rate and instantaneous rate given a kinetics plot?

What is average rate? What is instantaneous rate? How do you find these? My teacher described finding the tangent to a graph. I am not sure what is meant by this.
okarin's user avatar
  • 375
4 votes
2 answers

How are reaction rate laws derived?

Let's take the reaction $2A + B \rightarrow C$, with the assumption that this is an elementary reaction. If I'm only given this information, how would I derive the following forward rate law from ...
Cain's user avatar
  • 49
3 votes
1 answer

A "function of proportionality" in a rate law [closed]

I am currently studying rate laws and the determination of the order of a reaction. So first-order reactions remind me of linear functions $f(x)=kx$ while second-order reactions remind me of quadratic ...
TheLast Cipher's user avatar
3 votes
2 answers

Why must the rate law be experimentally determined?

I am familiar with the idea that rate law must be determined experimentally. I am also familiar with the idea that there is no formulated way for coming up with the rate law besides just ...
extremeaxe5's user avatar
3 votes
1 answer

Relationship between rate equation and equilibrium constant

I have read mannaia's answer on the question of 'rate order and confusion', as well as Nicolau Saker Neto's answer to a related question. They have both been very helpful. As I understand, the ...
Plastic Astronaut's user avatar
1 vote
1 answer

Where does the rate equation come from? (r = k [A]^x [B]^y)

Equations are great, but they're much better when you can understand them. I don't quite get why this works. Could someone explain it to me?r = k [A]^x [B]^y
HErO's user avatar
  • 31
-3 votes
2 answers

Why doesn't molecularity ever exceed 3?

Recently, I learnt that molecularity of a reaction is limited to 3 and even that is quite rare. I searched online and asked my teacher about this but the explanation given was that it is difficult for ...
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