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NEET UG Equilibrium — practice questions — page 4

Explore 150 free Equilibrium questions in NEET UG Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Equilibrium questions and exercises with answers

Showing questions 91–120 of 150.

Ice and water stay in equilibrium in an insulated flask at atmospheric pressure at which temperature?Read the answer and worked solution →Ice and water coexist at 1 atm at which temperature?Read the answer and worked solution →A liquid with higher vapour pressure at a set temperature isRead the answer and worked solution →Water and its vapour are in equilibrium at 100 degrees C at what pressure?Read the answer and worked solution →How does the boiling point of water change at high altitude?Read the answer and worked solution →Solid iodine in a closed vessel fills it with what colour of vapour?Read the answer and worked solution →Adding radioactive sugar to a saturated sugar solution shows that equilibrium isRead the answer and worked solution →A solution in which no more solute dissolves at a given temperature is calledRead the answer and worked solution →The fizzing of carbon dioxide on opening a soda bottle is governed by which law?Read the answer and worked solution →Ice and water at 1 atm can stay in equilibrium at how many temperatures?Read the answer and worked solution →For aA + bB to cC + dD, the expression for Kc isRead the answer and worked solution →If Kc for H2 + I2 to 2HI is 57.0 at 700 K, Kc for 2HI to H2 + I2 isRead the answer and worked solution →If all coefficients in a balanced equation are halved, the new Kc equalsRead the answer and worked solution →Which relation connects Kp and Kc for a gaseous equilibrium?Read the answer and worked solution →For N2(g) + 3H2(g) to 2NH3(g), the value of dn used in Kp = Kc(RT)^dn isRead the answer and worked solution →For which equilibrium is Kp equal to Kc?Read the answer and worked solution →For 2NOCl(g) to 2NO(g) + Cl2(g), what is dn?Read the answer and worked solution →What are the units of Kc for N2(g) + 3H2(g) to 2NH3(g)?Read the answer and worked solution →For CaCO3(s) to CaO(s) + CO2(g), the equilibrium constant Kp equalsRead the answer and worked solution →The value of Kc for a reaction at a fixed temperature depends onRead the answer and worked solution →A very large Kc, say above 1000, suggests that at equilibriumRead the answer and worked solution →If the reaction quotient Qc is greater than Kc, the reaction willRead the answer and worked solution →For H2 + I2 to 2HI (Kc = 57.0), a mix has [H2] 0.10 M, [I2] 0.20 M, [HI] 0.40 M. Qc isRead the answer and worked solution →When Qc is less than Kc, the net reaction moves towardRead the answer and worked solution →Which equation links the standard Gibbs energy change with K?Read the answer and worked solution →A reaction has dG0 = +13.8 kJ/mol at 298 K. Its Kc is aboutRead the answer and worked solution →Le Chatelier's principle says that a change in conditions at equilibrium makes the systemRead the answer and worked solution →In the Haber process, removing ammonia as it forms shifts the equilibriumRead the answer and worked solution →Fe3+ and SCN- form a deep red complex. Adding Hg2+ to this mix willRead the answer and worked solution →Raising pressure on N2 + 3H2 to 2NH3 at fixed temperature shifts it towardRead the answer and worked solution →

Worked practice questions

Ice and water stay in equilibrium in an insulated flask at atmospheric pressure at which temperature?

  1. 263 K
  2. 298 K
  3. 283 K
  4. 273 K
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Correct answer: D. 273 K

At 1 atm ice and water coexist only at 273 K, the normal melting point of ice.

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Ice and water coexist at 1 atm at which temperature?

  1. more volatile, lower boiling
  2. less volatile, higher boiling
  3. less volatile, lower boiling
  4. more viscous, higher boiling
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Correct answer: A. more volatile, lower boiling

Molecules escape more easily from such a liquid, so it is more volatile and boils at a lower temperature.

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A liquid with higher vapour pressure at a set temperature is

  1. Evaporation stops at once
  2. Its vapour pressure is zero
  3. Water molecules cannot condense
  4. Vapour spreads into the room
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Correct answer: D. Vapour spreads into the room

In an open system the vapour disperses into a large volume, so condensation stays far slower than evaporation.

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More Chemistry topics

Amines and BiomoleculesChemical KineticsAldehydes, Ketones and Carboxylic AcidsRedox ReactionsHydrocarbonsChemical Bonding and Molecular StructureSolutionsStructure of Atom