NCERT Class XI Chemistry Equilibrium Solutions
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Question : 25
Total: 73
Does the number of moles of reaction products increase, decrease or remain same when each of the following equilibria is subjected to a decrease in pressure by increasing the volume?
(a)P C l 5 ( g ) P C l 3 ( g ) + C l 2 ( g )
(b)C a O ( s ) + C O 2 ( g ) C a C O 3 ( s )
(c)3 F e ( s ) + 4 H 2 O ( g ) F e 3 O 4 ( s ) + 4 H 2 ( g )
(a)
(b)
(c)
Solution:
Applying Le Chatelier’s principle, on decreasing the pressure, equilibrium shifts to the direction in which pressure increases, i.e., number of moles of gaseous substances is more. Thus, moles of reaction products will increase in reaction (a), decrease in reaction (b) and remain same (n p n r
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