During electrolysis of water, hydrogen and oxygen are obtained. Answer
the following questions related to this experiment: State the volume ratio of
these gases. Which gas is produced at which electrode? Why do we need a
battery of at least 6V for this process? Why is sulphuric acid added to water?
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The arrangement of hydrogen in hydronium is more stable than in the bond with the sulfate ion so energy is released as heat making this an exothermic reaction. Because of the high heat generated in the disassociation of sulfuric acid, it's important to add acid to water slowly instead of water to acid.
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