The equation for the reaction of ICl and H2 is shown below. 2ICl (g) + H2(g) → 2HCl (g) + I2(g) The rate constant k for this reaction is 1.63 × 10−6 dm3 mol−1 s−1. What is the overall order of the reaction?
A 0 B 1 C 2 D 3
I understand that you have to use the units but how?
The equation for the reaction of ICl and H2 is shown below. 2ICl (g) + H2(g) → 2HCl (g) + I2(g) The rate constant k for this reaction is 1.63 × 10−6 dm3 mol−1 s−1. What is the overall order of the reaction?
A 0 B 1 C 2 D 3
I understand that you have to use the units but how?
The rate of a chemical reaction is always measured in mol dm^-3 s^-1.
If you divide the units of the rate of a chemical reaction by the units of its rate constant, you will always get the units of concentration (mol dm^-3) raised to the power of the overall reaction order.
The equation for the reaction of ICl and H2 is shown below. 2ICl (g) + H2(g) → 2HCl (g) + I2(g) The rate constant k for this reaction is 1.63 × 10−6 dm3 mol−1 s−1. What is the overall order of the reaction?
A 0 B 1 C 2 D 3
I understand that you have to use the units but how?
k = Rate/[A]
k = dm3 mol-1 s-1 Rate = mol dm-3 s-1
Overall order = Rate / k If you compare the units you realise overall order = 2
I've updated the title of your thread to "Reaction Rates" and added an A-Level label for better clarity. While you did receive responses, it's advisable to be more specific in your query to receive a faster response.
Wishing you an excellent weekend, and please don't hesitate to ask if you have any further questions or if anything else is unclear.