Displacement reactions involving the halogens
2 marks · EasyThe following reaction occurs: 2KBr(aq) + Cl2(aq) -> 2KCl(aq) + Br2(aq) If 0.10 mol of chlorine reacts with excess potassium bromide, calculate the maximum amount in mol of bromine formed.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
Show answer
0.10 mol (±0.01)
Common mistakes: Dividing by 2
Show mark scheme and worked solution
Marking points
M1 · 1 mark · Correct use of ratio: 1 mol Cl2 forms 1 mol Br2.
A1 · 1 mark · Correct answer: 0.10 mol Br2.
Worked solution
Mole ratio is 1:1 for Cl2 to Br2, so 0.10 mol Cl2 forms 0.10 mol Br2.