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Chemistry

The catalyst used in Ostwald's process is …………… .

  1. Finely divided iron
  2. Graphite
  3. Vanadium pentoxide
  4. Platinum

Nitric Acid

ICSE Sp 2024

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Answer

The catalyst used in Ostwald’s process is platinum.

Reason — Ostwald’s process :

4NH3+5O2700800°CPt4NO+6H2O+21.5K cals4\text{NH}3 + 5\text{O}2 \xrightarrow[700-800 \degree\text{C}]{\text{Pt}} 4\text{NO} + 6\text{H}_2\text{O} + 21.5 \text{K cals}

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