The diagram shows how water can be broken down into its elements using electrolysis - Junior Cycle Science - Question b - 2017
Question b
The diagram shows how water can be broken down into its elements using electrolysis.
(i) How could gas A be tested to confirm its identity?
(ii) Why was sulfuric a... show full transcript
Worked Solution & Example Answer:The diagram shows how water can be broken down into its elements using electrolysis - Junior Cycle Science - Question b - 2017
Step 1
How could gas A be tested to confirm its identity?
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Answer
To confirm the identity of gas A, it can be tested by relighting a glowing splint. If gas A is indeed oxygen, the splint will reignite, confirming the presence of oxygen.
Step 2
Why was sulfuric acid added to the water at the beginning of the experiment?
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Answer
Sulfuric acid was added to the water to help current (electricity) to flow more easily. It acts as a catalyst in the electrolysis process, facilitating the breakdown of water into its constituent gases.
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