The colour of KMnO 4 disappears when oxalic acid is added to its solution in acidic…
Chemistry · Class 12 · CBSE — The d- and f-Block Elements
The colour of KMnO4 disappears when oxalic acid is added to its solution in acidic medium. This can be explained as
- the pH of the solution changes on adding oxalic acid, hence KMnO4 is decolourised
- KMnO4 oxidises oxalic acid to CO2 and itself changes to Mn2+ ions which are colourless
- KMnO4 is oxidised to potassium sulphate which is colourless
- on exposure to air the acidic solution of KMnO4 becomes colourless.
Answer
(B) KMnO 4 oxidises oxalic acid to CO 2 and itself changes to Mn 2+ ions which are colourless
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- Which of the following pairs of ions have the same electronic configuration?
- For Zn 2+ , Ni 2+ , Cu 2+ and Cr 2+ which of the following statements is correct?
- When an oxide of manganese ( P ) is fused with KOH in the presence of an oxidising agent and dissolved in…
- Due to lanthanoid contraction which of the following properties is not expected to be similar in the same…
- Complete the given reactions. (A) 2 MnO _ 4 ^ - + H _ 2 O + I ^ - 2 ( i ) +2 OH ^ - + IO _ 3 ^ - (B) MnO _ 4…
- Match the column I with column II and mark the appropriate choice. Column I Column II (A) Mischmetall (i)…
- Correct configuration of Gadolinium ( Z = 64) is
- In the following question, a statement of assertion is followed by a statement of reason. Mark the correct…
More The d- and f-Block Elements questions · Browse all practice questions