Pressure in Rates of Reaction Question?

Hi,

I'm attempting a Rates question and have been given the concentration and pressure.

Since pressure increases the rate do I multiply the concentration by the pressure?

Also the pressure is in kPa, would I have to convert this to Pa?

Thank you :}

The questions attached

There is no mention of pressure.

Have you studied weak acids? Do you know how to work out pH of a weak acid and hence work out [H+] from pH?

I assumed pKa was pressure?
Not yet this is preparation work for my second year of A-Level

kPa would be kilopascals.

pKa is a way of expressing the strength of a weak acid.

So since its a weak acid there'll be a high PH which means a high concentration of H+ ions. So an increased rate of reaction. How do I use this to answer the question?

Weak acids have lower [H+] than strong acids (of the same concentration).

You know the order WRT [H+]. You'll calculate how [H+] changes when swapping the acid. I'll bet it is a simple comparison, e.g. [H+] will be 0.1x what it used to be and hence rate will be 0.1^orderx the old value.