Mention one relevant observation for each of the following reaction. (5)
i. A bottle containing Hydrogen chloride gas opened in air.
ii. Dil. HCl is added to AgNO3 solution followed by excess of NH4OH.
iii. Excess of chlorine react with ammonia.
iv. CuSO4 solution is electrolysed using inert electrode.
v. Conc. H2SO4 is added to hydrated CuSO4 crystals.
Answers
Answer:
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Answer:
Explanation:
1. When the bottle is opened HCl(g) comes in contact
with water vapours and reaction take place
→ White fumes of HCl (acid ) are observed
2. When HCl reacts with silver nitrate, white ppt. of AgCl
are formed
These ppt. react with NH4OH to form
Ag[(NH3)2] Cl
3. NCl3 and HCl are formed by reaction of excess
chlorine and ammonia
4. Cu+2 is completely reduced and OH- is completely oxidised
→ Cu is produced at cathode and O2 at anode
5. conc. H2SO4 act as dehydrating agent
it react with hydrated CuSO4
the blue colour of hydrated copper sulphate fades to white