Which of the following reactions shows reduction of water?

Question

Which of the following reactions shows reduction of water? (A) 2H2O +2Na → 2NaOH +H2 (B) 6CO2 + 12H2O → C6H12O6 + 6H2O + 6O2 (C) 2F2 + 2H2O → 4H+ + 4F- + O2 (D) P4O10 + 6H2O → 4H3PO4

Tardigrade Admin · Accepted Answer

Water is reduced to dihydrogen by highly electropositive metals. In this reaction H2O is reduced to H2. In other two reactions, H2O is oxidised to O2 and P4O10 is hydrolysed by water.

Q. Which of the following reactions shows reduction of water?

$2 H_{2} O + 2 N a \to 2 N a O H + H_{2}$

$6 C O_{2} + 12 H_{2} O \to C_{6} H_{12} O_{6} + 6 H_{2} O + 6 O_{2}$

$2 F_{2} + 2 H_{2} O \to 4 H^{+} + 4 F^{-} + O_{2}$

$P_{4} O_{10} + 6 H_{2} O \to 4 H_{3} P O_{4}$

Water is reduced to dihydrogen by highly electropositive metals. In this reaction $H_{2} O$ is reduced to $H_{2}$ . In other two reactions, $H_{2} O$ is oxidised to $O_{2}$ and $P_{4} O_{10}$ is hydrolysed by water.

Q. Which of the following reactions shows reduction of water?

2H2​O+2Na→2NaOH+H2​

6CO2​+12H2​O→C6​H12​O6​+6H2​O+6O2​

2F2​+2H2​O→4H++4F−+O2​

P4​O10​+6H2​O→4H3​PO4​

Water is reduced to dihydrogen by highly electropositive metals. In this reaction H2​O is reduced to H2​. In other two reactions, H2​O is oxidised to O2​ and P4​O10​ is hydrolysed by water.

$2 H_{2} O + 2 N a \to 2 N a O H + H_{2}$

$6 C O_{2} + 12 H_{2} O \to C_{6} H_{12} O_{6} + 6 H_{2} O + 6 O_{2}$

$2 F_{2} + 2 H_{2} O \to 4 H^{+} + 4 F^{-} + O_{2}$

$P_{4} O_{10} + 6 H_{2} O \to 4 H_{3} P O_{4}$

Water is reduced to dihydrogen by highly electropositive metals. In this reaction $H_{2} O$ is reduced to $H_{2}$ . In other two reactions, $H_{2} O$ is oxidised to $O_{2}$ and $P_{4} O_{10}$ is hydrolysed by water.