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NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Chemistry
Chapter
s Block Elements

NTA Abhyas 2020 · Chemistry · s Block Elements

Given below are two reactions of water with sodium and carbon...

Given below are two reactions of water with sodium and carbon dioxide. What is the nature of water in these reactions?

(i) 2Na+2H2O→2NaOH+H22Na + 2{H}_{2}O \to 2NaOH + {H}_{2}

(ii) 6CO2+12H2O→C6H12O6+6H2O+6O26C{O}_{2} + 12{H}_{2}O \to {C}_{6}{H}_{12}{O}_{6} + 6{H}_{2}O + 6{O}_{2}

Options

  1. AIn (ii) water acts as an oxidising agent and in (i) it acts as a reducing agent
  2. BIn (i) water acts an an oxidising agent while in (ii) it acts as a reducing agent
  3. CIn both, (i) and (ii) hydrogen acts as a reducing agent
  4. DIn both, (i) and (ii) hydrogen acts as an oxidising agent

Correct answer

B. In (i) water acts an an oxidising agent while in (ii) it acts as a reducing agent

Step-by-step solution

With sodium metal water acts as an oxidising agent and gets reduced to H2{H}_{2} , with CO2C{O}_{2} water acts as a reducing agent and is oxidised to oxygen.
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