Course home

Introducing chemical reactions

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42

Question 12

Aluminium sulfate, $Al2(SO4)3\text{Al}_2(\text{SO}_4)_3$ , is widely used in water purification to coagulate impurities.

What is the relative formula mass ( $MrM_{\text{r}}$ ) of aluminium sulfate? ( $ArA_{\text{r}}$ : $Al=27\text{Al} = 27$ , $S=32\text{S} = 32$ , $O=16\text{O} = 16$ )

$150$

$214$

$262$

$342$

Markscheme

Introducing chemical reactions Questions

GCSE
Chemistry
Introducing chemical reactions

55 exam-style questions on OCR GCSE Chemistry Introducing chemical reactions. Each one has a worked solution and a mark scheme showing where the marks go.

Introducing chemical reactions

Question bank

Introducing chemical reactions

Easy Medium Hard

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42

Question 12

Aluminium sulfate, $Al2(SO4)3\text{Al}_2(\text{SO}_4)_3$ , is widely used in water purification to coagulate impurities.

What is the relative formula mass ( $MrM_{\text{r}}$ ) of aluminium sulfate? ( $ArA_{\text{r}}$ : $Al=27\text{Al} = 27$ , $S=32\text{S} = 32$ , $O=16\text{O} = 16$ )

$150$

$214$

$262$

$342$

Markscheme

Introducing chemical reactions Questions

GCSE
Chemistry
Introducing chemical reactions

55 exam-style questions on OCR GCSE Chemistry Introducing chemical reactions. Each one has a worked solution and a mark scheme showing where the marks go.