Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

Chemical Equilibrium question

2010 · Q65
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /NEET
  3. /Chemistry
  4. /Chemical Equilibrium
  5. /2010 · Q65

Chemical Equilibrium question

2010 · Q65

NEETChemistryChemical EquilibriumMCQ+4 / −1
The reaction,
2A(g) + B(g) ⇌\rightleftharpoons⇌ 3C(g) + D(g)
is begun with the concentrations of A and B both at an initial value of 1.00 M. When equilibrium is reached, the concentration of D is measuread and found to be 0.25 M. The value for the equilibrium constant for this reaction is given by the expression
  1. A
    [(0.75)3 (0.25)] ÷\div÷ [(1.00)2 (1.00)]
  2. B
    [(0.75)3 (0.25)] ÷\div÷ [(0.50)2 (0.75)]
  3. C
    [(0.75)3 (0.25)] ÷\div÷ [(0.50)2 (0.25)]
  4. D
    [(0.75)3 (0.25)] ÷\div÷ [(0.75)2 (0.25)]
View written solutionFree

Correct answer: B

2A(g)+B(g)⇌3C(g)+D(g)
Initial mole1100
At equilibrium1 - (2 $ \times $ 0.25)
= 0.5		1 - 0.25
= 0.75		3 $ \times $ 0.25
= 0.75		0.25


Equilibrium constant, K = $${{{{\left[ C \right]}^3}\left[ D \right]} \over {{{\left[ A \right]}^2}\left[ B \right]}}$$

$ \therefore $ K = $${{{{\left[ {0.75} \right]}^3}\left[ {0.25} \right]} \over {{{\left[ {0.5} \right]}^2}\left[ {0.75} \right]}}$$
PreviousNext

More from Chemical Equilibrium

  • In which of the following equilibrium Kc and Kp are not equal?2010 · MCQ
  • The dissociation constants for acetic acid and HCN at 25oC are 1.5 × 10−5 and 4.5 × 10−10 respectively. The equilibrium constant for the equilibrium CN− + CH3COOH ⇌ HCN + CH3COO− would be2009 · MCQ
  • The dissociation equilibrium of a gass AB2 can be represented as : 2AB2(g) ⇌ 2AB(g) + B2(g) The degree of dissociation is x and is small compared to 1. The expression relating the degree of dissociation (x) with…2008 · MCQ
  • If the concentration of OH− ions in the reaction Fe(OH)3(s) ⇌ Fe3+(aq) + 3OH−(aq) is decreased by 1/4 times, then equilibrium concentration of Fe3+ will increase by2008 · MCQ
  • The value of equilibrium constant of the reaction HI(g) ⇌ 21​H2(g) + 21​I2(g) is 8.0. The The equilibrium constant of the reaction H2(g) + I2(g) ⇌ 2HI(g) will be2008 · MCQ
  • The values of for the reactions, X ⇌ Y + Z . . . .(i) A ⇌ 2B . . . .(ii) are in the ratio 9 : 1. If degree of dissociation of X and A be equal, then total pressure at equilibrium (i) and (ii) are in…2008 · MCQ
  • The equilibrium constants of the following are N2 + 3H2 ⇌ 2NH3; K1 N2 + O2 ⇌ 2NO; K2 H2 + 21​O2 ⇌ H2O; K3 The equilibrium constant (K) of the reaction : 2NH3 + ${5 \over…2007 · MCQ
  • For the reaction : CH4(g) + 2O2(g) ⇌ CO2(g) + 2H2O(l), ΔHr = − 170.8 kJ mol−1. Which of the following statements is not true?2006 · MCQ