POTASSIUM HYDROXIDE,POTASSIUM OXIDE

POTASSIUM PEROXIDE,POTASSIUM SUPEROXIDE

POTASSIUM CHLORIDE,POTASSIUM SULPHATE

In how many of the following , the oxidation state of transition metal is +6 ? Potassium ferrate, Manganese dioxide, Chromyl chloride, Sodium chromate, Potassium permanganate, Cupric chloride

Super oxide of potassium is

Acidified potassium dichromate reacts with potassium iodide and oxidises it to I_(2) . The oxidation state of chromium in the products of reaction is + x. The value of x is :

Assertion: If a strong acid is added to a solution of potassium chromate it changes its colour from yellow to orange. Reason: The colour change is due to the oxidation of potassium chromate.

Acidified potassium dichromate is treated with hydrogen sulphide. In the reactiion, the oxidation number of chromium

When excess potassium super oxide is placed in a container containing CO_(2) , then