17 Redox Reactions SAQ1

+7

To prevent the formation of an intermediate oxidation state (+4) and to ensure the complete reduction of Mn.

To prevent Fe(2+) from being oxidised to Fe(3+) by air and to ensure the complete reduction of Mn.

<p>1 : 5</p> Signup and view all the answers

<p>Purple → Brown → Colourless → Persisting Pale Pink</p> Signup and view all the answers

<p>To prevent anaemia.</p> Signup and view all the answers

<p>Fe²⁺ (Iron(II))</p> Signup and view all the answers

<p>Chloride ions, which would displace iodine from iodine solutions, giving an inaccurate result.</p> Signup and view all the answers

<p>To ensure all I₂ ions from potassium iodate are released, and to keep the formed iodine in solution.</p> Signup and view all the answers

<p>To detect the presence of iodine, and it is added when the solution turns straw yellow.</p> Signup and view all the answers

<p>The hypochlorite ion (OCl-)</p> Signup and view all the answers