ICSE BoardEnglish MediumSTD 8CHEMISTRYChemical Reactions2 Marks
Question
How do the following help in bringing about a chemical change? pressure.
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Answer
Some chemical reactions take place when reactants are subjected to high pressure.
e.g: Nitrogen and hydrogen when subjected to high pressure produce ammonia gas.
$\mathrm{N}_2+3 \mathrm{H}_2 \underset{200 \mathrm{~atm}}{\stackrel{450^{\circ} \mathrm{C}}{\rightleftharpoons}} 2 \mathrm{NH}_3$
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