Skip to content

Course home

Types of chemical reactions

Types of chemical reactions

EasyMedium
12345678910111213141516171819202122
Question 13

An acidified solution containing dichromate(VI) ions is reacted with iron(II) ions according to the following balanced ionic equation:

Cr2O72−(aq)+14H+(aq)+6Fe2+(aq)⟶2Cr3+(aq)+6Fe3+(aq)+7H2O(l) \text{Cr}_2\text{O}_7^{2-}(\text{aq}) + 14\text{H}^+(\text{aq}) + 6\text{Fe}^{2+}(\text{aq}) \longrightarrow 2\text{Cr}^{3+}(\text{aq}) + 6\text{Fe}^{3+}(\text{aq}) + 7\text{H}_2\text{O}(\text{l}) Cr2​O72−​(aq)+14H+(aq)+6Fe2+(aq)⟶2Cr3+(aq)+6Fe3+(aq)+7H2​O(l)

Which species acts as the reducing agent in this reaction?

A

Fe2+(aq)\text{Fe}^{2+}(\text{aq})Fe2+(aq)

B

Cr2O72−(aq)\text{Cr}_2\text{O}_7^{2-}(\text{aq})Cr2​O72−​(aq)

C

Cr3+(aq)\text{Cr}^{3+}(\text{aq})Cr3+(aq)

D

Fe3+(aq)\text{Fe}^{3+}(\text{aq})Fe3+(aq)

Markscheme

Types of chemical reactions Questions

  1. GCSE
  2. /Chemistry
  3. /Types of chemical reactions

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

Question bank