All questions for multiple choice are taken from Old HSC Exams, covering new syllabus Preliminary Chemistry content.
15 marks – 25 mins
Questions.
Question 1.
Question 2.
Question 3.
Question 4.
Question 5.
Question 6.
Question 7.
C6H12O6 = Glucose, fermentation converts glucose into ethanol and carbon dioxide
Question 8.
Question 9.
Question 10.
Question 11.
Question 12.
Question 13.
Question 14.
Question 15.
Answers.
Question 1.
D, chloroethene
Question 2.
C
Question 3.
D
Question 4.
D
Question 5.
B & C is complete combustion, D is not balanced
A is the answer
Question 6.
A
Question 7.
C6H12O6 = Glucose, fermentation converts glucose into ethanol and carbon dioxide
D
Question 8.
A
Question 9.
A
Question 10.
If treating with HCl → H+ + Cl–
Cation-carbonate + HCl → cation-Cl+ H2O + CO2
D → lowest molar mass – most moles per gram
Question 11.
Ethanol = C2H5OH
1000 g of ethanol * (1 mol / (12.01*2+1.008*6+16.00) g) * (1360 kJ / 1 mol) * (1 km/ 2270 kJ)
B
Question 12.
C
Question 13.
A
Question 14.
B
Question 15.
- Lower activation energy, increase the rate of reaction
A