pag 3 effect if temperature on rate of reaction

How much HCL do u use

10cm³ of 1 moldm^-3 HCL to tube - place in a plastic container without cross in it

How much odium this sulfate is used

10cm³ of 0.05 moldm^-3 (add this to a seperate tube to the HCL)

What do u do with the 2 tubes of HCL and s.t.sulfate

Place in container and place thermometer in the tube with sodium thiosulfate

What do u do once u record the start temp

Add 1cm³ of acid to the sulfate and start timer

Look from above and record time for cross to disappear

Record final temp of reaction mixture -

What do u do to the cloudy content

Pour it into sodium carbonate solution (acts as a stop bath)

Then add water from kettle to plastic container (no hotter than 55 )

Repeat step 1 and insert the HCL into the hole with cross under it

Leave tube to warm for 3 min

Repeat the steps - results for at least 5 diff temp

What is a stop bath and what’s the purpose and what happens when the colour of stop bath changes

The stop bath contains sodium carbonate and

Acid and sulfur dioxide can be neutralised at any point

Once colour of stop bath changes - sodium carbonate has been used up + stop bath needs to be replenished

How do u analyse the data ? What is an indication of reaction

Time taken to produce the same amount of sulfur at different temp is an indication rate of reaction

What do u do from the graph

The graph should be amount of sulfur against time

Initial rate of reaction can be worked out by amount of sulfur/time which is proportional to 1/time

What is 1/time an approximation of

It’s an approximation of rate of reaction

Doesn’t include concentration - the formula can be used as it assumes the amount of sulfur produced is fixed and constant

What is the formula for the PAG

The change of concentration of sulfur is

The concentration of sulfur is the same for each experiment so time can be taken and analysed