Random?

Question 1

Ester reacting in acidic conditions

Answer 1

Alcohol and carboxylic acid

Eg : ethyl ethanoate + water (water dissociate to give out H+ under reflux) = ethanoic acid + ethanol

Question 2

Ester reacting in alkaline conditions

Answer 2

Salt and alcohol

Eg : naoh + CH3COOC2H5 = CH3COO-Na+ + HOC2H5

Question 3

Student 2 carries out the same experiment but uses twice the mass of CaCl2
. All other quantities are very similar to Student 1’s experiment.
Predict any differences between the temperature change and the calculated value of ΔsolH from
the experiments of the two students. Explain your reasoning

Answer 3

rearranging q=mct and h= q/n to find the changes

the temperature increases due to increasing moles

h remains the same because q/n ratios out

Question 4

sigma bond define

Answer 4

direct overlap of orbitals

Question 5

pi bond define

Answer 5

sideways overlap of p orbitals