Which of the following stresses to a system at equilibrium cause an increase in the production of $C H_{3} O H ? C O (g) + 2 H_{2} (g) \to C H_{3} O H (l)$
$(a) H_{2}$ is added
(b) The volume is increase
(c) Argon is added (at constant volume)
(d) Removing CO

(a) only

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(b), (c), (d)

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(c), (d)

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(b) only

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Solution

The correct option is A (a) only
Le Chatelier's principle states that if a stress is applied to a reaction mixture at equilibrium, reaction responds in the direction that relieves the stress. Therefore, adding $H_{2}$ will produce more methanol. By increasing the volume and decreasing the pressure. there will be a net reaction in the direction that increases the number of moles of gas, So since there are 3 moles of gas on the reactant side and only 1 mole of gas on the product side, if the volume is increased less methanol will be produced. Since Ar is an inert, It will have no effect on the amount of methanol produced. Removing CO will cause a shift in the reaction from right to left causing less methanol to be produced.

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$(C H_{3})_{3} C H K M n O_{4} - ---- \to A; C H_{3} (C H_{2})_{2} C H_{3} H C l - -- \to A l C l_{3} B; C H_{3} (C H_{2})_{4} C H_{3} C r_{2} O_{3}, 773 K - ------ \to 10 - 20 a t m C;$

Correct statements are

A. 'A' is tertiary alcohol B. 'B' contains a $3^{\circ}$ carbon

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For the reaction $N_{2} (g) + 3 H_{2} (g) ⇌ 2 N H_{3} (g), Δ H = - 93.6 k J m o l^{- 1}$ . The amount (i.e. number of mole) of~ $H_{2}$ at equilibrium will
increase if

Q. Consider the reactions

(i) C O (g) + H_{2} O (g) ⇌ C O_{2} (g) + H_{2} (g); K_{1} (i i) C H_{4} (g) + H_{2} O (g) ⇌ C O (g) + 3 H_{2} (g); K_{2} (i i i) C H_{4} (g) + 2 H_{2} O (g) ⇌ C O_{2} (g) + 4 H_{2} (g); K_{3}

which of the following is correct?

Heat of combustion of

{C H}_{4}

25^{0} C

and 1 atm constant pressure is -210 kcal

{m o l}^{- 1}

{C H}_{4} (g) + 20_{2} (g) \to {C O}_{2} (g) + {2 H}_{2} O (l)

Hence, heat of combustion at constant volume is :

Question 14

Which of the following reactions is an example f use of water gaas in the synthesis of other compounds?

$(a) C H_{4} (g) + H_{2} O (g) 1270 K - --- \to N i C O (g) + H_{2} (g) (b) C O (g) + H_{2} O (g) 673 K - ---- \to C a t a l y s t C O_{2} (g) + H_{2} (g) (c) C_{n} H_{2 n + 2} + n H_{2} O (g) 1270 k - -- \to N i n C O + (2 n + 1) H_{2} (d) C O (g) + 2 H_{2} (g) C o b a l t - ---- \to C a t a l y s t C H_{3} O H (l)$

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Le Chatelier's Principle

Standard XII Chemistry

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Which of the following stresses to a system at equilibrium cause an increase in the production of CH3OH ?CO(g)+2H2(g)→CH3OH(l) (a)H2 is added (b) The volume is increase (c) Argon is added (at constant volume) (d) Removing CO

Which of the following stresses to a system at equilibrium cause an increase in the production of $C H_{3} O H ? C O (g) + 2 H_{2} (g) \to C H_{3} O H (l)$
$(a) H_{2}$ is added
(b) The volume is increase
(c) Argon is added (at constant volume)
(d) Removing CO