Equilibrium — practice questions
60 curated practice questions from Equilibrium (Chemistry NEET, NTA Exams) — 17 hard, 32 easy, 11 medium. Every question includes the final answer free; step-by-step worked solutions with a free account.
- If in the reaction N 2 O 4 ⇌ 2NO 2 , 'x' is that part of N 2 O 4 which dissociates, then the number of moles at…
- Which one of the following can be classified as a Bronsted base?
- For a given exothermic reaction, K p and K_ p are the equilibrium constants at temperature T 1 and T 2 , respectively…
- For a weak acid HA, the percentage of dissociation is nearly 1% at equilibrium. If the concentration of acid is 0.1 mol…
- A vessel at 1000 K contains CO 2 with a pressure of 0.5 atm. Some of the CO 2 is converted into CO on the addition of…
- For the reaction equilibrium, N 2 O 4 (g) ⇌ 2NO 2 (g) the concentrations of N 2 O 4 and NO 2 at equilibrium are 4.8 ×…
- The equilibrium concentrations of the species in the reaction A+B C+D are 2, 3, 10 and 6 molL -1 respectively at 300 K…
- An acidic buffer solution can be prepared by mixing the solution of:
- Given below are two statements Statement I : The numerical value of the equilibrium constant for a reaction indicates…
- An increase in the concentration of the reactants of a reaction leads to change in
- Consider the following reversible chemical reactions: A _ 2 ( ~g )+ B _ 2 ( ~g ) K _ 1 2 AB ( ~g ) ... (1) 6 AB ( ~g )…
- The molar solubility of Cd(OH) 2 is 1.84 10^ -5 M in water. The expected solubility of Cd(OH) 2 in a buffer solution of…
- Given below are two statements Statement I : Water and water vapour remain in equilibrium position at atmospheric…
- The concentration of [H⁺] and [OH⁻] of the 10 -2 M aqueous solution of 2% ionised weak acid is:
- Select the pK a value of the strongest acid from the following:
- The solubility of Sb 2 S 3 in water is 1.0 × 10 -5 mol/L at 298K. What will be its solubility product?
- The dissociation equilibrium of a gas AB 2 can be represented as: 2AB 2 (g) ⇌ 2AB(g) + B 2 (g) The degree of…
- Solubility product of silver bromide is 5.0 × 10 -13 . The quantity of potassium bromide (molar mass taken as 120 g mol…
- The solubility product for a salt of the type AB is 4 10^ -1 . What is the molarity of its standard solution?
- The value of K P /K C for the following reactions at 300 K are, respectively: (At 300 K, RT = 24.62 dm 3 atm mol -1 ) N…
- The value of K_ p_ 1 and K_ p_ 2 for the reactions: X ⇌ Y + Z ... (1) and A ⇌ 2B ... (2) are in ratio of 9 : 1. If…
- A precipitate of AgCl is formed when equal volumes of the following are mixed: [ K sp for AgCl = 10 -10 ]:
- In a buffer solution containing equal concentration of B - and HB, the K b for B - is 10 -10 . The pH of buffer…
- What is the equilibrium expression for the reaction: P 4 (s) + 5O 2 (g) ⇌ P 4 O 10 (s)
- Solubility of a M 2 S salt is 3.5 × 10 -6 , find out its solubility product:
- The equilibrium partial pressure for the X(g) + Y(g) ⇌ Z(g) were recorded as P x = 0.15 atm, P y = 0.10 atm and P z =…
- The solubility product of CaSO 4 is 2.4 × 10 -5 . When 100 mL of 0.01 M CaCl 2 and 100 mL of 0.02 M Na 2 SO 4 are…
- In HS - , I - , RNH 2 , NH 3 order of proton accepting tendency will be:
- Given below are two statements. One is labelled as Assertion and the other is labelled as Reason. STATEMENT-1…
- Ionization constant of CH 3 COOH is 1.7 × 10 -5 and concentration of H + ions is 3.4 × 10 -4 M. Then find out initial…
- The conjugate base of H _ 2 PO _ 4 ^ - is:
- The pH value of the blood does not appreciably change by small addition of an acid or a base because blood:
- A buffer solution has equal volumes of 0.2 M NH 4 OH and 0.02 M NH 4 Cl. The pK b of the base is 5. The pH is:
- Which of the following is the characteristic of a reversible reaction?
- An aqueous solution of carbonic acid (H 2 CO 3 ) contains:
- The following equilibria are given: N 2 + 3H 2 ⇌ 2NH 3 K 1 N 2 + O 2 ⇌ 2NO K 2 H 2 + 1 2 O 2 ⇌ H 2 O K 3 The…
- pH of 0.005 M calcium acetate (pK a of CH 3 COOH = 4.74) is:
- A is an aqueous acid; B is an aqueous base. They are diluted separately, then:
- If the degree of dissociation are m _ 1 and x _ 2 respectively, when the concentrations of HCN are 0.1 M and 0.001 M …
- pK a values of two acids A and B are 4 and 5. The strengths of these two acids are related as:
- What is the correct relationship between the pH of iso-molar solutions of sodium oxide (pH 1 ), sodium sulphide (pH 2…
- ΔG° for a reaction is 46.06 kcal mol -1 . k p of the reaction at 300 K is:
- The first and second dissociation constants of an acid H 2 A are 1.0 × 10 -5 and 5.0 × 10 -10 respectively. The overall…
- Given below are two statements. One is labelled as Assertion and the other is labelled as Reason. STATEMENT-1…
- In a saturated solution of the sparingly soluble strong electrolyte AgIO 3 (Molecular mass = 283) the equilibrium which…
- In qualitative analysis, in order to detect second group basic radical, H 2 S gas is passed in the presence of dilute…
- Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A)…
- If the value of an equilibrium constant for a particular reaction is 1.6 10^ 12 , then at equilibrium the system will…
- In the reaction: H 2 + I 2 ⇌ 2HI, in a 2 L flask 0.4 moles of each H 2 and I 2 are taken. At equilibrium 0.5 moles of…
- The pK a of a weak acid (HA) is 4.5. The pOH of an aqueous buffered solution of HA in which 50% of the acid ionised is:
- An aqueous solution in which the H + ion concentration is greater than 10 -7 M is said to be:
- Find out the solubility of Ni(OH) 2 in 0.1 NaOH. Given that the ionic product of Ni(OH) 2 is 2 10^ -15
- Three moles of PCl 5 , three moles of PCl 3 and two moles of Cl 2 are taken in a closed vessel. If at equilibrium the…
- The molar solubility (in mol L -1 ) of a sparingly soluble salt MX 4 is 'S'. The corresponding solubility product is K…
- A 1 litre container contains 2 moles of PCl 5 initially. If at equilibrium, K c is found to be 1, degree of…
- CH 3 COOH is weaker acid than H 2 SO 4 . It is due to:
- The pH value of 0.1 M solution of the following salts increases in the order:
- In the manufacture of ammonia by Haber's process, . N _ 2 ( ~g )+3 H _ 2 2 NH _ 3 ( ~g )+92.3 k ] which of the…
- One of the following equilibria is not affected by change in volume of the flask:
- A certain buffer solution contains equal concentration of X - and HX. The K b for X - is 10 -10 . The pH of the buffer…