When $$KMn{O_4}$$ solution is added to oxalic acid solution, the decolourisation is slow in the beginning but becomes instantaneous after some time because
A.
$$C{O_2}$$ is formed as the product
B.
reaction is exothermic
C.
$$MnO_4^ - $$ catalyses the reaction
D.
$$M{n^{2 + }}$$ acts as autocatalyst
Answer :
$$M{n^{2 + }}$$ acts as autocatalyst
Releted MCQ Question on Inorganic Chemistry >> D and F Block Elements
Releted Question 1
When same amount of zinc is treated separately with excess of sulphuric acid and excess of sodium hydroxide, the ratio of volume of hydrogen evolved is