The Contact process takes place at a pressure between 100 000 Pa and 200 000 Pa. A catalyst is used.
Which statement is correct?
1 )
$A{\text{ }}{V_2}{O_5}$ catalyst is added to increase the equilibrium yield of the reaction.
2 )
Changes in pressure have no effect on the position of equilibrium.
The equilibrium yield of the reaction is very high under the conditions used.
4 )
An iron catalyst is added to increase the rate of reaction.
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