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Identifying the products of chemical reactions

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Question 20

Pyrophosphoric acid contains pyrophosphate ions, $P2O74−\text{P}_2\text{O}_7^{4-}$ .

Pyrophosphoric acid is completely neutralised by iron(III) hydroxide.

What is the formula of the salt that is produced?

$Fe3(P2O7)4\text{Fe}_3(\text{P}_2\text{O}_7)_4$

$Fe(P2O7)3\text{Fe}(\text{P}_2\text{O}_7)_3$

$Fe4(P2O7)3\text{Fe}_4(\text{P}_2\text{O}_7)_3$

$Fe3P2O7\text{Fe}_3\text{P}_2\text{O}_7$

Markscheme

Identifying the products of chemical reactions Questions

GCSE
Chemistry
Identifying the products of chemical reactions

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

Identifying the products of chemical reactions

Question bank

Identifying the products of 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

Question 20

Pyrophosphoric acid contains pyrophosphate ions, $P2O74−\text{P}_2\text{O}_7^{4-}$ .

Pyrophosphoric acid is completely neutralised by iron(III) hydroxide.

What is the formula of the salt that is produced?

$Fe3(P2O7)4\text{Fe}_3(\text{P}_2\text{O}_7)_4$

$Fe(P2O7)3\text{Fe}(\text{P}_2\text{O}_7)_3$

$Fe4(P2O7)3\text{Fe}_4(\text{P}_2\text{O}_7)_3$

$Fe3P2O7\text{Fe}_3\text{P}_2\text{O}_7$

Markscheme

Identifying the products of chemical reactions Questions

GCSE
Chemistry
Identifying the products of chemical reactions

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