Law Of Equilibrium And Equilibrium Constant MCQs

Equilibrium or classical thermodynamics focuses on understanding the macroscopic properties of matter in equilibrium. While a detailed description of equilibrium will be provided later, for now, it can be defined as a time-independent state, similar to a column of resting air, where there is no flow of matter, energy, charge, or momentum. Thermodynamics also extends to the concept of reversible processes, which represent a special class of idealized systems known as a continuum sequence of equilibrium states. The most precise concentrations of the components in a reaction mixture can be calculated for the state of chemical equilibrium. Hence, the state of chemical equilibrium is characterized by the minimum thermodynamic potential concerning the chemical structure, specifically the conversion of molecules from one form to another.

What is the pH of the resulting solution when equal volumes of 0.1M NaOH and 0.01M HCl are mixed?

(a) 7.0
(b) 1.04
(c) 12.05
(d) 2.0

Which one of the following species cannot act as both Bronsted acid and base?

(a) H2O
(b) HCO3–
(c) HSO4–
(d) NH2–

What will be the value of pH of 0.01 mol dm-3 CH3COOH (Ka = 1.74 x 10-5)?

(a) 3.4
(b) 3.6
(c) 3.9
(d) 3.0

Which of the following salts will give the highest pH in the water?

(a) KCl
(b) NaCl
(c) Na2CO3
(d) CuSO4

Could BF3 acidity be clarified using one of the following concepts?

(a) Arrhenius concept
(b) Bronsted Lowry concept
(c) Lewis concept
(d) Bronsted Lowry as well as Lewis concept

The oxidation number of Cr in K2CrO4 is

(a) +6
(b) -6
(c) +8
(d) -8

For acidic solution

(a) pH = 7
(b) pH < 7

(c) pH > 7
(d) None of these

What should be the correct order of the gas, acetone and ether vapour concentration at 30℃. Considering that water has a maximum boiling point among these compounds, and that ether has a minimum boiling point?

(a) water > ether > acetone
(b) water < acetone < ether
(c) ether < acetone < water
(d) acetone < ether < water

The aqueous solution of NH4Cl is

(a) alkaline
(b) acidic
(c) neutral
(d) none of these

Which of the following options will be correct for the stage of half completion of the reaction A ⇌ B?

(a) Go = 0
(b) Go > 0
(c) Go < 0
(d) Go = – RT ln 2