PAPER 2

Question 1

Identify the skeletal formula of the Ketone, Aldehyde and Acid

Answer 1

Ketone - =O in the middle
Aldehyde - =O at the end
Acid - =O -OH

Question 2

Give reagents to identify the Ketone, Aldehyde and Acid

Answer 2

Carboxylic acid - Add water then gas and bubbling is produced through limewater if test is positive

Question 3

Calculate the final temperature (calorimetry)

Answer 3

LEARN CALORIMETRY DUMB ASS

Question 4

What would the effect on equilibrium yield, rate of reaction and cost be as a result of a change in temperature?

Answer 4

Exothermic increase
Equilibrium shifts to the left to oppose the change in temperature so the yield of products decreases.

Exothermic decrease
Equilibrium shifts to the right to oppose the change in temperature so the yield of products increases.

Endothermic increase
Equilibrium shifts to the right to oppose the change in temperature so the yield of products increases.

Exothermic decrease
Equilibrium shifts to the left to oppose the change in temperature so the yield of products decreases.

Question 5

What is the effect of pressure on equilibrium yield, rate of reaction and costs

Answer 5

The equilibrium will shift to the side with the least moles

Question 6

Enthalpy change of combustion as a calculation

Answer 6

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