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6.2. Equilibrium - II (icon Equilibrium) — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry6.2. Equilibrium - II (icon Equilibrium)1 Mark
MCQ
In the following reactions, $ZnO$ is respectively acting as a/an :

$(A)\,ZnO + Na_2O\rightarrow Na_2ZnO_2$

$(B)\,ZnO + CO_2\rightarrow ZnCO_3$

  • A
    base and acid
  • B
    base and base
  • C
    acid and acid
  • ✓
    acid and base
✓

Answer

Correct option: D.
acid and base
d
Zinc oxide is an amphoteric oxide, as indicated by the following reactions:

$ {\mathrm{ZnO}+\mathrm{Na}_{2} \mathrm{O} \rightarrow \mathrm{Na}_{2} \mathrm{ZnO}_{2}} $

${ { (Acid)\quad (Base) \quad (Salt)}} $

${\mathrm{ZnO}+\mathrm{CO}_{2} \rightarrow \mathrm{ZnCO}_{3}} $

${ { (Base) } \quad { (Acid) \quad (Salt)}}$

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