Kinetics Self-Test 3

Always use pen & paper to record your calculations, as some questions may involve using figures already calculated

You must enter your answers as decimals and NOT in scientific notation.

You MUST give your answer to TWO decimal places - for numbers less than one always include a zero before the decimal point.

Just enter the number, not the units.

Answer to Prob 14, Lecture 3, p176
No units because the quantity (6 mm) is multiplied by 1000 and divided by metre.

Answer to Prob 15a, L3, p18
infinity

Answer to Prob 16b, L3, p20
approx. 83 kJ/mol

i) 1.27 x 10-3 L.mol-1.s-1

ii) 1.61 x 10-2 L.mol-1.s-1

## 1

Calculate the Arrhenius activation energy for a reaction if its rate constant doubles on going from 20C to 30C. Give your answer, to TWO decimal places, in kJ / mol (without the units).

## 2

Calculate the Arrhenius activation energy if the rate constant doubles on going from 120C to 130C. It is not the same!

Again give your answer, to TWO decimal places, in kJ/mol (without the units).