Question

A yellow powder X burns in air to form a gas Y with to form Z, which turns blue litmus solution red. Identify X, Y and Z and write relevant chemical equations.

Answer 1

Answer:

X - Sulphur

Y - Sulphur - di - oxide

Z - Sulphurous acid

Explanation:

S + O2  (On burning) ----------> SO2

SO2 + H2O ---------------> H2SO3

H2SO3 is an acid. So it will turn blue litmus red

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Answer 2

Answer:

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