Using the following reaction equation answer questions 1-3. Nelg) + 3H2(g) 2NH3(
ID: 103980 • Letter: U
Question
Using the following reaction equation answer questions 1-3. Nelg) + 3H2(g) 2NH3(g) 1. If nitrogen (N2) gas is removed from the system at equilibrium, what will happen to hydrogen concentration? (a) Decrease (b) No change (c) Increase (d) All of the above 2. Production of ammonia (NHs) is an endothermic reaction. What will heating the equilibrium system do to the amount of ammonia produced? (a) Increase (b) No effect (c) Decrease (d) All of the above 3. If we use a catalyst, which way will the reaction shift? (a) Right (b) Left (c) More right than left (d) No effect on the position of equilibrium (e) All of the above 4. In an electrolytic cell the electrode at which the electrons enter the solution is called the ; the chemical change that occurs at this electrode is called a) anode, oxidation b) cathode, reduction c) anode, reduction d) cathode, oxidation e) cannot tell unless we know the species being oxidized and reduced. 5. What is the Kc expression for the reaction H2 (g) + /2(g) 2HI(g)? [HI a)H,11, (b) [HIn2 (bH,11, LH,11I (d) HI (e) None of the above. LH-11,1 6. Which of the following statements is FALSE? a) Oxidation and reduction half-reactions occur at electrodes in electrochemical cells b) All electrochemical reactions involve the transfer of electrons. c) Reduction occurs at the cathode.Explanation / Answer
1)
Removing reactant will shift the reaction in the direction of reactant as per Le chatelier Principle
So, Equilibrium moves to reactant side
Answer: c
2)
Increasing Temperature will shift the reaction in a direction which absorbs heat as per Le chatelier Principle
Forward reaction is endothermic in nature
hence, forward reaction will be favoured
So, Equilibrium moves to product side
Answer: a
3)
Catalyst doesn't affect equilibrium
So, No effect on equilibrium
Answer: d
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