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can pure hydrogen be obtained by electrolysis of water?

can pure hydrogen be obtained by electrolysis of water?


1 Answers

Aman Bansal
592 Points
9 years ago

Dear Aish,

When water is decomposed by electrolysis, it gives 2 volumes hydrogen, 1 volume oxygen.

The electrolyte is a dilute solution of sodium or potassium hy-droxid; oxygen rises from the positive and hydrogen from the negative. If thegasesare collected as mixed oxygen and hydrogen in the gasometer, it is called detonating gas. This is the gas that was first used in the oxy-hydrogen blowpipe . Detonating gas is handy for blowpipe work, but it is dangerous. It is the most readily combustible mixture of the two gases, and if the torch backfires there will be an explosion. To prevent this a safety water-seal was introduced in the leading tube, or the blowpipe handle contained a chamber packed with fine rods or gauze or asbestos wool to imitate the idea of the Davy safety lamp.

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Aman Bansal

Askiitian Expert

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