Write the chemical equations for-
A yellow powder ‘X’ burns in air to form a gas ‘Y’ with pungent, suffocating odour. The gas ‘Y’ dissolves in water to form ‘Z’, which turns blue litmus solution red.
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Answer:
X - Sulphur
Y - Sulphur - di - oxide
Z - Sulphurous acid
S + O2 (On burning) ----------> SO2
SO2 + H2O ---------------> H2SO3
H2SO3 is an acid. So it will turn blue litmus red
Explanation:
Yellow coloured powder X which is soluble in CS2 is sulphur. Sulphur burns in oxygen to give sulphur dioxide gas (SO2) which is suffocating smelling gas. ... Hence, S is a non-metal.
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