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Chemical equilibrium



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Q1. If the chemical reaction is: aA + bB ? cC + dD and K is the equilibrium constant. Then what is the equilibrium constant of the reaction naA + nbB ? ncC + ndD?

(a) K
(b) nK
(c) Kn
(d) K/n

Q2. Given that at 800k the concentrations are as follows: N2=3.0 ? 10?3M, O2 = 4.2 ? 10?3M and NO = 2.8 ? 10?3M, what is the equilibrium constant for the reaction N2(g) + O2(g) ? 2NO(g)?

(a) 0.622
(b) 0.6
(c) 0.63
(d) 0.94

Q3. for the reaction H2(g) + Br2(g) ? 2HBr(g) the equilibrium constant is given as 0.04 then what is the equilibrium constant for the reaction 2HBr(g) ? H2(g) + Br2(g)?

(a) 0.04
(b) 4
(c) 25
(d) 100

Q4. What is the equilibrium constant of the following reaction: 4NH3 + 5O2 ? 4NO + 6H2O?

(a) [NO][H2O]/[NH3][O2]
(b) [C]c[D]d/[A]a[B]b
(c) [NO4[H2]6/NH3]4[O2]5
(d) [NO]4[H2O]6/[NH3]4[O2]5

Q5. If we use activities in place of molar concentration in an equilibrium constant expression then what is the dimension of k?

(a) it becomes dimensionless
(b) the same units of molar concentration
(c) units are related to the activity
(d) cannot predict it

Q6. If the initial concentrations of reactants in a reaction increase then the equilibrium constant ____________

(a) also increases
(b) decreases
(c) remains constant
(d) may increase or decrease

Q7. The equilibrium constant of a reaction is 20 units and the equilibrium constant of other reaction is 30 units when both the reactions are added up together then the equilibrium constant of the resultant reaction is given by _____________

(a) 20 units
(b) 600 units
(c) 50 units
(d) 10 units

Q8. What does it indicate having a higher equilibrium constant?

(a) reaction occurs faster
(b) rate of backward reaction is faster
(c) both the backward and forward reactions are equal
(d) reaction may be slower than usual

Q9. The value of equilibrium constant for different chemical reactions at a particular temperature is ____________

(a) constant
(b) unique
(c) the same
(d) cannot say

Q10. A reaction is given by aA + bB ? cC + dD. How do you represent an equilibrium constant?

(a) [A]a[B]b/[C]c[D]d
(b) [C]c[D]d/[A]a[B]b
(c) [A][B]/[C][D]
(d) [C][D]/[A][B]


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An Example For A Strong Electrolyte Is

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An Example For A Strong Electrolyte Is

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The Degree Of Dissociation Of 0.1 M HCN Solution Is 0.01%. Its Ionisation Constant Would Be

Modified 242 Year Ago

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The Degree Of Dissociation Of 0.1 M HCN Solution Is 0.01%. Its Ionisation Constant Would Be

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574 views

In Which Of The Following Dissociation Of NH4OH Will Be Minimum

Modified 242 Year Ago

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242 Year Ago

In Which Of The Following Dissociation Of NH4OH Will Be Minimum

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545 views

The Values Of Dissociation Constants Of Same Acid (at 25° C) Are As Follows. Indicate Which Is The Strongest Acid In Water

Modified 242 Year Ago

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242 Year Ago

The Values Of Dissociation Constants Of Same Acid (at 25° C) Are As Follows. Indicate Which Is The Strongest Acid In Water

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A Weak Monobasic Acid Is 1% Ionized In 0.1 M Solution At 25°C. The Percentage Of Ionization In Its 0.025 M Solution Is

Modified 242 Year Ago

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242 Year Ago

A Weak Monobasic Acid Is 1% Ionized In 0.1 M Solution At 25°C. The Percentage Of Ionization In Its 0.025 M Solution Is

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A 0.010 M Solution Of Maleic Acid, Amonoprotic Organic Acid, Is 14% Ionized. What Is Ka For Maleic Acid

Modified 242 Year Ago

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242 Year Ago

A 0.010 M Solution Of Maleic Acid, Amonoprotic Organic Acid, Is 14% Ionized. What Is Ka For Maleic Acid

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491 views

The PH Of A 0.1 Molar Solution Of The Acid HQ Is 3. The Value Of The Ionization Constant, Ka Of The Acid Is

Modified 242 Year Ago

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242 Year Ago

The PH Of A 0.1 Molar Solution Of The Acid HQ Is 3. The Value Of The Ionization Constant, Ka Of The Acid Is

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