Advertisements
Advertisements
Question
State the use of manganese dioxide in the laboratory prepa-ration of oxygen from potassium chlorate.
Advertisements
Solution
In the laboratory preparation of oxygen from potassium chlor¬ate, manganese dioxide acts as a catalyst i.e. it increase the rate of production of oxygen without getting itself consumed.
APPEARS IN
RELATED QUESTIONS
The most abundant element in the earth’s crust.
Fill in the blank :
Oxygen occupies about _____% of air by volume.
Fill in the blank space by choosing the correct word from the given list.
List: oxygen, carbonic, suIphur dioxide gas, precipitation, helium
Every nine parts of water by weight contains eight parts by weight of _________.
Why is potassium chlorate is not used for laboratory preparation of oxygen ?
What happens when Magnesium burns in oxygen ? Also give the balanced chemical equation for the reaction.
State the precautions while preparing oxygen in the labo-ratory.
How will you obtain dry oxygen in the laboratory?
Complete and balance the following equation
S + O2 →
Fill in the blank space by choosing the correct word from the given list.
List: sulphurous, nitric acid, red lead oxide paint, oxygen, phosphoric
The nitric oxide gas reacts with the oxygen and water vapour to form ______ vapour.
Give reason for the following:
Oxidation of sulphur results in a product which turns moist blue litmus red.
