Question

2) Al+xH2SO4=Al2(SO4)3+XH2
Find the number x and write the balanced equation. Hydrogen is a
colourless and odour less gas. Therefore how can it be identified in the
above chemical change.​

Answer 1

Explanation:

h2 can be identified by putting burning candle in front of tube

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Answer 2

Answer:

2AL + 3H2SO4 = AL2(SO4)3+3H2

presence of hydrogen gas evolution can be detected by bringing a lighter matchstick near it. it will go off with a pop sound.