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Equilibrium

Quiz by Aji Budiyanto

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10 questions
Show answers
  • Q1
    Le Chatelier's principle states that
    if a chemical system at equilibrium is stressed, the system will adjust to increase the stress
    if a chemical system at equilibrium is stressed, the system will not adjust
    The chemical system will adjust if only depended on the temperature and pressure
    if a chemical system at equilibrium is stressed, the system will adjust to reduce the stress
    30s
  • Q2
    Which of the following is not a way to stress a chemical system?
    pressure
    concentration
    time
    temperature
    30s
  • Q3
    A reaction that releases heat energy is known as...
    isobaric
    isothermic
    endothermic
    exothermic
    30s
  • Q4
    When writing an endothermic reaction, heat energy is stated as a..
    product
    catalyst
    arrow
    reactant
    30s
  • Q5
    An exothermic reaction has reached the equilibrium. If heat energy is then removed, the equilibrium will shift...
    to the product
    the arrow change
    toward the middle
    to the reactant
    30s
  • Q6
    Changes in pressure will only affect substances that are in the __________ state.
    plasm
    gaseous
    liquid
    solid
    30s
  • Q7
    The reaction is endothermic, the increasing the temperature makes the reaction shifting to...
    energy
    reactant
    rate of reaction
    product
    30s
  • Q8
    The reaction has equation of A + B --> 3C, The decreasing pressure will shift the reaction to...
    Reactant
    backward
    not affected
    Product
    30s
  • Q9
    Solid calcium carbonate thermally decomposes to form solid calcium oxide and carbon dioxide gas, with an enthalpy change of +192 kJ/mol. The equation for this reaction is as follows: CaCO3 --> CaO + CO2. Once equilibrium has been reached, the mixture of calcium carbonate and calcium oxide is heated to a higher temperature. How and why does the volume of the gas balloon change?
    The position of equilibrium shifts to the left, decreasing the volume.
    The position of equilibrium shifts to the right, decreasing the volume.
    The position of equilibrium shifts to the right, increasing the volume.
    The position of equilibrium shifts to the left, increasing the volume.
    30s
  • Q10
    The colorless gas dinitrogen tetroxide N2O4 decomposes reversibly into the brown gas nitrogen dioxide NO2, N2O4 --> 2 NO2 with a reaction enthalpy of +57.2 kJ/mol. When the volume of the room increased, what will happen to the equilibrium?
    reduction of N2O4 decreased
    formation of NO2 increased
    formation of NO2 decreased
    formation of N2O4 increased
    60s

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