AP EAMCET · Chemistry · p Block Elements (Group 15, 16, 17 & 18)
When sulphur is boiled with \(\mathrm{Na}_2 \mathrm{SO}_3\), a compound \((A)\) is produced. \((A)\) on reaction with excess \(\mathrm{AgNO}_3\) solution gives a compound \((B)\), which after dissolving in water produces a black coloured sulphide \((C)\). Identify the compound \((A),(B)\) and \((C)\).
- A \(\mathrm{Na}_2 \mathrm{~S}_2 \mathrm{O}_3, \mathrm{Ag}_2 \mathrm{~S}_2 \mathrm{O}_3, \mathrm{Ag}_2 \mathrm{~S}\)
- B \(\mathrm{Na}_2 \mathrm{SO}_4, \mathrm{Ag}_2 \mathrm{SO}_4, \mathrm{Ag}_2 \mathrm{~S}\)
- C \(\mathrm{Na}_2 \mathrm{~S}_2 \mathrm{O}_7, \mathrm{Ag}_2 \mathrm{SO}_4, \mathrm{Ag}_2 \mathrm{~S}\)
- D \(\mathrm{Na}_2 \mathrm{SO}_5, \mathrm{Ag}_2 \mathrm{SO}_5, \mathrm{Ag}_2 \mathrm{SO}_4\)
Answer & Solution
Correct Answer
(A) \(\mathrm{Na}_2 \mathrm{~S}_2 \mathrm{O}_3, \mathrm{Ag}_2 \mathrm{~S}_2 \mathrm{O}_3, \mathrm{Ag}_2 \mathrm{~S}\)
Step-by-step Solution
Detailed explanation
When sulphur ( \(\mathrm{S}\) ) is heated with \(\mathrm{Na}_2 \mathrm{SO}_3\), a compound \(\mathrm{Na}_2 \mathrm{~S}_2 \mathrm{O}_3(A)\) is produced. When \(\mathrm{Na}_2 \mathrm{~S}_2 \mathrm{O}_3\) react with excess of \(\mathrm{AgNO}_3\) solution, it will give a…
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