An aqueous solution of `H_(2)O_(2)`

The mole fraction of water in 20% (wt.//wt.) aqueous solution of H_(2)O_(2) is:

The mole fraction of water in 20% (wt.//wt.) aqueous solution of H_(2)O_(2) is:

The dilute aqueous solution of H_(2)O_(2) turns blue litmus red. True/False

To calculate the rate of decomposition of H_(2)O_(2) in an aqueous solution , a certain volume of the aqueous solution of H_(2)O_(2) is pipetted out and titrated against KMnO_(4) solution at different interval of time . Intervals The observations are given below : {:(Time ("in min"),0,5,10,20),("Volume of "KMnO_(4)("inML"),46.2,37.1,29.8,19.6):} Show that the decomposition of H_(2)O_(2) in aqueous solution is a first order reaction and calculate its rate constant .

The species formed in concentrated aqueous solution of Na_(2)O_(2) is

A solution of I_(2) in aqueous Kl on reaction with an aqueous solution of Na_(2)S_(2)O_(3) gets decolourised. The reaction taking place here is