Explore topic-wise MCQs in Chemistry Questions and Answers.

This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.

1.

If [H2]t=0.10 M, [I2]t = 0.20 M and [HI]t = 0.40 M, in the reaction H2(g) + I2(g) \(\rightleftharpoons\) 2HI(g), what is the value of QC?

A. 8
B. 4
C. 2
D. 1
Answer» B. 4
Discussion
2.

At equilibrium, KC is _______________

A. greater than reaction quotient
B. equal to the reaction quotient
C. less than the reaction question
D. independent of reaction question
Answer» C. less than the reaction question
Discussion
3.

What will happen If QC > KC?

A. QC decreases till equilibrium
B. QC increases till equilibrium
C. QC remains constant
D. cannot say
Answer» B. QC increases till equilibrium
Discussion
4.

For a reaction aA + bB → cC + dD, which is not in equilibrium the QC is given as __________

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]
Answer» C. [A][B]/[C][D]
Discussion
5.

What will happen if KC > 10-3 in a chemical reaction?

A. products are predominant
B. reactants are predominant
C. equilibrium
D. dynamic equilibrium
Answer» E.
Discussion
6.

If KC > 10x, the products predominate over reactants. Then what is the value of x?

A. 2
B. 3
C. 4
D. 1
Answer» C. 4
Discussion