You are Here: Home

# Working out rate constants

Announcements Posted on
Would YOU be put off a uni with a high crime rate? First 50 to have their say get a £5 Amazon voucher! 27-10-2016
1. Hi,
I carried out an experiment at different temperature using iodine, propanone and sulfuric acid and I timed how long it took for the solution to change from brown to colourless. I need to work out the rate constant which is k= rate/ (concentration of propanone x concentration of sulfuric acid) but i don't know how to work out the rate of the reaction at different temperatures. The conentration of propanone I used was 0.6 moldm3 and the concentration of sulphuric acid was 0.486 mol dm3.

Thank you!
2. (Original post by Destiny888)
Hi,
I carried out an experiment at different temperature using iodine, propanone and sulfuric acid and I timed how long it took for the solution to change from brown to colourless. I need to work out the rate constant which is k= rate/ (concentration of propanone x concentration of sulfuric acid) but i don't know how to work out the rate of the reaction at different temperatures. The conentration of propanone I used was 0.6 moldm3 and the concentration of sulphuric acid was 0.486 mol dm3.

Thank you!
What was the concentration of the iodine?

This disappears in a certain time, so calculate mol dm-3 s-1 for the iodine ...

.. this is the rate.
3. (Original post by charco)
What was the concentration of the iodine?

This disappears in a certain time, so calculate mol dm-3 s-1 for the iodine ...

.. this is the rate.
Ok thank you!

## Register

Thanks for posting! You just need to create an account in order to submit the post
1. this can't be left blank
2. this can't be left blank
3. this can't be left blank

6 characters or longer with both numbers and letters is safer

4. this can't be left empty
1. Oops, you need to agree to our Ts&Cs to register

Updated: April 11, 2016
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Today on TSR

### University open days

Is it worth going? Find out here

### How to cope with a heavy workload

Poll
Study resources

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.