Quiz  /  Chemical Equilibrium Class 10 MCQ Questions With Answers

  • 1. 
    During the reaction P4 + 5O2 → P4O10, 0.800 mole of product was made in 15.0 seconds. What is the rate of reaction?

  • 56.8 g/min
  • 908 g/min

  • 2. 
    What is the molarity of 3 mole of hydrochloric acid in 3 L of water.

  • 3
  • 1
  • 6
  • 9

  • 3. 
    Which represents the addition of an enzyme in the reaction?

  • 3
  • 4
  • 2
  • 1

  • 4. 
    What makes an effective collision?

  • When molecules collide.
  • When molecules collide with the proper orientation.
  • When molecules collide with proper orientation and enough kinetic energy.
  • High Temperature.

  • 5. 
    What are [C] and [D]?

  • concentration of reactants
  • concentration of products
  • energy of reactants
  • energy of products

  • 6. 
    BaCl2+H2SO4 ⟷ BaSO4+2HClBaCl_{2_{ }}+H_2SO_4\ \longleftrightarrow\ BaSO_4+2HClBaCl2​​+H2​SO4​ ⟷ BaSO4​+2HCl In a solution .96 L solution at equilibrium BaCl2BaCl_2BaCl2​ .87 mole H2SO4H_2SO_4H2​SO4​ .1 mole BaSO4BaSO_4BaSO4​ .5 mole HClHClHCl .5 molewhat is the Keq

  • 1.5
  • 1.7
  • 1.6
  • None of these

  • 7. 
    What is the equilibrium-constant expression for CO2(g) + H2(g) ↔ CO(g) + H2O(l)

  • Kc= [CO][H2O] / [CO2][H2]
  • Kc= [CO2][H2] / [CO]
  • Kc= [CO2][H2] / [CO][H2O]
  • Kc= [CO] / [CO2][H2]

  • 8. 
    In a .4 L solution at equilibrium CaCO3CaCO_3CaCO3​ 3 moles CaOCaOCaO .5 moles CO2CO_2CO2​ 7 molesbalanced eq CaCO3⟷CaO+CO2CaCO_3\longleftrightarrow CaO+CO_2CaCO3​⟷CaO+CO2​ What is the Keq

  • 2.92
  • 1.12
  • 2.24
  • 4.48

  • 9. 
    How could we make this reaction happen more quickly?

  • Decrease the concentration of the acid
  • crush the chalk to increase the surface area
  • Put the test tube in an ice bath

  • 10. 
    What is the molarity of 1 mole of Ba+ in 2 L of water

  • 1 M
  • 2 M
  • .5 M
  • .25 M

  • 11. 
    What is the Keq expression for this reaction? 2 NO(g) + O2(g) ⇌ 2 NO2(g)

  • Keq = [NO2]2 / [NO]2 [O2]
  • Keq = [NO]2 [O2] / [NO2]2
  • Keq = [NO]2 [O2] [NO2]2
  • Keq = [NO2]2 / [NO]2 + [O2]

  • 12. 
    What is the molarity of a solution which contains 22.41 grams of NaCl in 50.0 mL of solution?

  • 0.488 M
  • 7.67 mol
  • 7.67 M
  • 0.00767 M
Report Question
warning
access_time
  Time