Chemistry Paper 22
May / June 2017·5070·10 questions
Mock exam: 75 min, official timing
Question paper
Question A1
Question A2
Question A3
Question A4
Question A5
Question A6
Question B7
Question B8
Question B9
Question B10
Mark scheme
Question A1
A1(a)[1]
A1(b)[1]
A1(c)[1]
A1(d)[1]
A1(e)[1]
Question A2
A2(a)[6]
A2(b)(i)[1]
A2(b)(ii)[1]
Question A3
A3(a)(i)[1]
A3(a)(ii)[4]
A3(b)[2]
A3(c)(i)[2]
A3(c)(ii)[1]
Question A4
A4(a)[2]
A4(b)[2]
negative electrode: Na⁺ + e⁻ → Na;
positive electrode: 2O²⁻ → O2 + 4e⁻
A4(c)[1]
ions move / mobile ions / ions free to move
A4(d)[1]
Na2O + H2O → 2NaOH
Question A5
A5(a)[1]
A5(b)(i)[2]
A5(b)(ii)[2]
A5(c)[1]
A5(d)(i)[1]
A5(d)(ii)[1]
Question A6
A6(a)[3]
A6(b)[2]
A6(c)[3]
Question B7
B7(a)[1]
B7(b)(i)[1]
B7(b)(ii)[1]
B7(c)[3]
B7(d)(i)[1]
B7(d)(ii)[2]
B7(e)[1]
Question B8
B8(a)[1]
B8(b)[1]
B8(c)[1]
B8(d)[2]
B8(e)[2]
B8(f)(i)[2]
B8(f)(ii)[1]
Question B9
B9(a)[1]
B9(b)[1]
B9(c)[1]
B9(d)(i)[2]
B9(d)(ii)[1]
B9(e)(ii)[1]
B9(e)(iii)[2]
Question B10
B10(a)(i)[1]
B10(a)(ii)[1]
B10(b)[3]
B10(c)[2]
B10(d)[3]