The reaction between hydrogen and iodine may be represented by the equation H2(g)+ I2(g) → 2HI(g), and is exothermic. Therefore
an increase in temperature favours the forword reaction
an increase in pressure favours the backward reaction
both pressure and temperature muct be increased to favour the forward reaction
a decrease in temperature will favour the forward reaction
a decrease in pressure and an increase in temperature will favour the forward reaction
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Discussions (7)
For pressure 2 affect d system, den d number of moles of reactant must b different frm dat of the product.. Since d number of moles of d reactant equals d number of moles of the product. Den pressure will b of no effect. i.e option B,C,E ar out.. An icrease in temperature of an exothermic reaction favours d backward reaction, while a decrease in temperature favours the foward reaction.. Dat settles it.
ANS is D,1MOLE+1MOLE=2MOLE that shows that pressure has no effects,it is exothermic reaction so decrease in temperature wud favour forward reaction
There is a rule which says: increase in temperature favours d backward reaction of an exothermic changes and vice versa. Hence, i go for option D
since they are in equilibrium pressure has no effect on the system therefore, D is the answer.
