Which One Of The Following Sets Of Data Does Not Determine A Uniqueã¢â‚¬â€¹ Triangle?

Chemic Equilibrium
Examples of
Multiple Choice Questions

i.

When the system A + B

C + D is at equilibrium,

(a) the sum of the concentrations of A and B must equal the sum of the concentrations of C and D.

(b) the frontward reaction has stopped.

(d) the reverse reaction has stopped.

(eastward) neither the frontwards nor the reverse reaction has stopped.

2.

2SO_three(g)

2SO₂(g) + O₂(g)
The conventional equilibrium constant expression (Thousand_c) for the arrangement as described by the above equation is:

(a) [And so_two]ⁱⁱ/[So₃]

(b) [So₂]²[O₂]/[SO₃]²

(d) [SO₂][O₂]

(east) none of these

iii.

Consider the following reversible reaction. In a 3.00 liter container, the following amounts are found in equilibrium at 400 ^oC: 0.0420 mole Due north₂, 0.516 mole H₂ and 0.0357 mole NH₃. Evaluate Chiliad_c. N_ii(g) + 3H₂(g)

2NH_iii(grand)

(a) 0.202

(b) 1.99

(d) iv.94

(e) 0.503

4.

If the equilibrium abiding for the reaction A + 2B

C + 5/ii D has a value of 4.0, what is the value of the equilibrium constant for the reaction 2C + 5D

2A + 4B at the same temperature?

(a) 0.25

(b) 0.063

(d) eight.0

(e) sixteen

5.

At 445^oC, M_c for the following reaction is 0.020. 2HI(thousand)

H_two(thousand) + I₂(g) A mixture of H₂, I₂, and HI in a vessel at 445^oC has the following concentrations: [How-do-you-do] = 2.0 1000, [H₂] = 0.l K and [I₂] = 0.10 M. Which 1 of the following statements concerning the reaction caliber, Q_c, is TRUE for the above system?

(a) Q_c = K_c; the system is at equilibrium.

(b) Q_c is less than K_c; more than H₂ and I_ii will be produced.

(d) Q_c is greater than M_c; more H₂ and I₂ volition be produced.

(e) Q_c is greater than K_c; more HI will be produced.

6.

Nitrosyl chloride, NOCl, dissociates on heating as shown below. When a 1.50 gram sample of pure NOCl is heated at 350^oC in a book of 1.00 liter, the percent dissociation is found to be 57.2%. Calculate K_c for the reaction equally written. NOCl(thousand)

NO(1000) + 1/2 Cl₂(g)

(a) 0.876

(b) 9.26

(d) 1.75 x ten^-4

(e) 0.0421

7.

A quantity of HI was sealed in a tube, heated to 425^oC and held at this temperature until equilibrium was reached. The concentration of Hi in the tube at equilibrium was institute to be 0.0706 mol/50. Calculate the equilibirum concentration of H₂ (and I₂). For the gas-phase reaction,

H₂ + I₂

2HI

K_c = 54.6 at 425^oC

(a) nine.55 10 ten^-3 K

(b) 1.17 x 10^-3 Chiliad

(d) 4.78 x ten^-3 M

(e) 2.34 x x^-three M

viii.

Consider the reaction:

N₂(g) + O₂(yard)

2NO(m)

1000_c = 0.10 at 2000^oC

Starting with initial concentrations of 0.040 mol/L of N₂ and 0.040 mol/Fifty of O_two, calculate the equilibrium concentration of NO in mol/L

(a) 0.0055 mol/50

(b) 0.0096 mol/50

(d) 0.080 mol/L

(e) 0.ten mol/L

9.

K_c = 0.040 for the system below at 450^oC. If a reaction is initiated with 0.40 mole of Cl₂ and 0.forty mole of PCl₃ in a 2.0 liter container, what is the equilibrium concentration of Cl₂ in the aforementioned system? PCl₅(grand)

PCl_three(g) + Cl₂(g)

(a) 0.07 M

(b) 0.sixteen M

(d) 0.04 Thou

(e) 0.26 M

10.

The reversible reaction: 2SO₂(g) + O_two(g)

2SO₃(g) has come to equilibrium in a vessel of specific volume at a given temperature. Earlier the reaction began, the concentrations of the reactants were 0.060 mol/L of And so₂ and 0.050 mol/L of O₂. Afterwards equilibrium is reached, the concentration of SO_three is 0.040 mol/L. What is the equilibrium concentration of O₂?

(a) 0.010 K

(b) 0.020 M

(d) 0.040 M

(e) none of these

xi.

Consider the gas-phase equilibrium organisation represented by the equation: 2H₂O(g)

2H₂(g) + O₂(g) Given that the forward reaction (the conversion of "left-hand" species to "right-mitt" species) is endothermic, which of the following changes will decrease the equilibrium amount of H₂O?

(a) adding more oxygen

(b) adding a solid stage calalyst

(d) increasing the temperature at abiding pressure

(e) calculation He gas

12.

The conventional equilibrium constant expression (Grand_c) for the arrangement below is: 2ICl(south)

I₂(due south) + Cl₂(g)

(a) [I₂][Cl₂]/[ICl]²

(b) [I_ii][Cl₂]/two[ICl]

(d) ([I₂] + [Cl₂])/2[ICl]

(east) [Cl₂]/[ICl]ⁱⁱ

xiii.

Consider the equilibrium organisation: 2ICl(south)

I₂(s) + Cl₂(1000) Which of the following changes volition increase the total amount of of Cl_ii that can be produced?

(a) removing some of the I_ii(s)

(b) adding more ICl(s)

(d) decreasing the volume of the container

(east) all of the above

xiv.

At equilibrium, a 1.0 liter container was institute to incorporate 0.20 moles of A, 0.20 moles of B, 0.40 moles of C and 0.40 mole of D. If 0.10 moles of A and 0.x moles of B are added to this system, what will be the new equilibrium concentration of A? A(one thousand) + B(g)

C(chiliad) + D(grand)

(a) 0.37 mol/Fifty

(b) 0.47 mol/L

(d) 0.23 mol/L

(e) 0.fifteen mol/L

15.

Consider the following system in a 1.00 L container: A(one thousand) + B(m)

2C(1000) The equilibrium concentrations at 200^oC were adamant to be:

[A] = 0.200 One thousand

[B] = 3.00 Yard

[C] = 0.500 One thousand

How many moles of A must be added to increase the concentration of C to 0.700 K at 200^oC?

(a) 0.225 mol

(b) 0.305 mol

(d) 0.610 mol

(e) 0.700 mol

16.

Consider the reversible reaction at equilibrium at 392^oC: 2A(g) + B(g)

C(g) The partial pressures are found to be: A: 6.70 atm, B: 10.1 atm, C: iii.60 atm. Evaluate Thousand_p for this reaction.

(a) 7.94 x x^-iii

(b) 0.146

(d) 54.5

(e) 121

17.

Yard_c = 0.040 for the system beneath at 450^oC: PCl₅(m)

PCl_three(k) + Cl_ii(thousand) Evaluate K_p for the reaction at 450^oC.

(a) 0.40

(b) 0.64

(d) 0.052

(e) half-dozen.7 x 10^-4

xviii.

What is the equilibrium abiding for a reaction that has a value of

Grand^o = -41.8 kJ at 100^oC?

(a) one.01

(b) 7.1 ten 10⁵

(d) 1.4 x x^-6

(due east) 13.5

nineteen.

The equilibrium constant at 427^oC for the reaction: N₂(g) + 3H₂(thousand)

2NH₃(one thousand) is K_p = ix.four ten 10^-5. Calculate the value of

G^o for the reaction at 427^o.

(a) -33 kJ

(b) -54 kJ

(d) 33 kJ

(e) i.3 J

20.

For a specific reaction, which of the following statements can exist fabricated about K, the equilibrium constant?

(a) It always remains the same at unlike reaction conditions.

(b) Information technology increases if the concentration of one of the products is increased.

(d) It increases if the concentration of 1 of the reactants is increased.

(due east) It may be inverse by the addition of a catalyst.

Answers:

1. (east) two. (b) three. (b) 4. (b) v. (b) 6. (c) vii. (a) viii. (c) 9. (a) 10. (c) eleven. (d) 12. (c) thirteen. (c) 14. (d) 15. (b) 16. (a) 17. (c) eighteen. (b) 19. (c) twenty. (c)