Allied solutions

Allied solutions

Grade 8

Hydrogen | Objective Type Questions

Question 1

Q1) Give balanced equations for the following conversions:

  1. Zinc to sodium zincate - using an alkali.

  2. Acidic water to hydrogen - by electrolysis.

  3. Water gas to hydrogen - industrially

  4. Iron [[III]] oxide to iron - using hydrogen.

  5. Nitrogen to a basic gas - using hydrogen.

Solution :

  1. Zn+2NaOH→Na_2ZnO_2+H_2
  2. [CO+H_2]+H_2O→CO_2+2H_2+\triangle

CO_2 is removed from the mixture, when this mixture is passed through KOH (caustic potash), residual gas left is hydrogen .

  1. Fe_2O_3+3H_2→2Fe+3H_2O

Fe_2O_3 is reduced by adding hydrogen.

  1. N_2+3H_{2\ }⇌\ 2NH_3

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subject-cta

Question 1

Q1) Give balanced equations for the following conversions:

  1. Zinc to sodium zincate - using an alkali.

  2. Acidic water to hydrogen - by electrolysis.

  3. Water gas to hydrogen - industrially

  4. Iron [[III]] oxide to iron - using hydrogen.

  5. Nitrogen to a basic gas - using hydrogen.

Solution :

  1. Zn+2NaOH→Na_2ZnO_2+H_2
  2. [CO+H_2]+H_2O→CO_2+2H_2+\triangle

CO_2 is removed from the mixture, when this mixture is passed through KOH (caustic potash), residual gas left is hydrogen .

  1. Fe_2O_3+3H_2→2Fe+3H_2O

Fe_2O_3 is reduced by adding hydrogen.

  1. N_2+3H_{2\ }⇌\ 2NH_3

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subject-cta
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