+91-9566306857  (or)  +91-9176170648

Ask Questions, Get Answers

Home  >>  JEEMAIN and NEET  >>  Chemistry  >>  Hydrogen

$H_2O_2$ is obtained by action of dil $H_2SO_4$ on

$\begin{array}{1 1}(a)\;MnO_2\\(b)\;PbO_2\\(c)\;BaO_2\\(d)\;SnO_2\end{array}$

1 Answer

Solution :
By the action of dilute sulphuric acid. Apaste of hydrated barium peroxide $(BaO_2.8H_2O)$ is prepared in ice – cold water and then added slowly to an ice-cold solution of $20\%\; H_2SO_4$
$BaO_2.8H_2O +H_2SO_4 \to BaSO_4+H_2O_2 +8H_2O$
The white precipitate of $BaSO_4$ is removed by filtration leaving behind a dilute solution $(5\%) \;of\; H_2O_2.$
In this method, anhydrous barium peroxide can not used since the precipitated $BaSO_4$ forms a protective layer around unreacted barium peroxide thereby preventing the further reaction
Hence (c) is the correct answer.
answered Jan 24, 2014 by sreemathi.v
edited Mar 27 by sharmaaparna1
Ask Question
Download clay6 mobile app