10. Given the reaction: N2(g)+ O2(g) 182.6 kJ2 NO(g) Which change would cause an
ID: 704476 • Letter: 1
Question
10. Given the reaction: N2(g)+ O2(g) 182.6 kJ2 NO(g) Which change would cause an immediate increase in the rate of the forward reaction? ? (A)increasingthe (A) increasing the concentration of NO(g) (B) increasing the concentration of N2(g) (C) decreasing the reaction temperature (D) decreasing the reaction pressure 11. Given the Haber reaction at equilibrium: N2(g)+ 3 H2(g) 2 NH3(g)+ heat Which stress on the system will decrease the production of NH3(g)? (A) increasing the concentration of N2(g) (B) increasing the pressure on the system (C) decreasing the concentration of H2(g) (D) decreasing the temperature on the system 12. Given the reaction at STP and at equilibrium: H2+C2(g) 2 HCI(g) Which change will result in an increase in the concentration of Cl2(g)? (A) decreasing the pressure of the system (B) decreasing the concentration of HCl(g) (C) increasing the concentration of H2(9) (D) increasing the concentration of HCI(g)Explanation / Answer
10)
moles of reactants are equal to moles of products .So, no effect of pressure.
This is endothermic reaction (forward). So, for increasing products temperature should be maximum or very high.
Increase in the forward reaction will effect and increase the products that is NO concentrtaion.
So, correct option is (A)
11)
Moles of reactanst =4 and moles of products are 2. So, the effect of pressure will be as increase in pressure makes the equilibrium towards products. but here we need to decrease conc of NH3 .In order to do that we need to decrease the conc of any reactant. So, correct answer is decreasing H2 (g) option (C)
12)
Moles are same on both sides.So, effect of sytem pressure.
Increase in conc of Cl2 means backward reaction has to be happened. So, adding HCl more will favor back ward reaction till it reaches equilibrium. So, correct option is (D)
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