Samuels CHEM Chemical Equilibrium: Question Preview (ID: 31601)


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Chemical equilibrium is represented by ______.
a) double arrows b) single arrow c) triple arrow d) equal sign
Any factor that changes the rate of either forward or reverse reactions.
a) stress b) solute c) solvent d) inhibitor
This states that if a stress is applied to a system at equilibrium, the system will react to offset the stress.
a) Le Chatelier’s Principle b) Hund’s Rule c) Conservation Principle d) Equilibrium Principle
2 SO2 + O2 → 2 SO3 If more oxygen is added, which way will equilibrium shift?
a) right b) left c) no shift d) both directions
2 SO2 + O2 → 2 SO3 If the pressure is decreased, which way will equilibrium shift?
a) left b) right c) no shift d) both directions
2 H2 + O2 → 2 H2O If more H2O is added, which way will equilibrium shift?
a) left b) right c) no shift d) both directions
2 H2 + O2 → 2 H2O If a catalyst is added, which way will equilibrium shift?
a) no shift b) left c) right d) both directions
In an exothermic reaction, will heat be found where?
a) product side b) reactant side c) no heat used d) both sides
N2 + 2 O2 + heat → 2 NO2 If the temperature decreases, which way will equilibrium shift?
a) left b) right c) no shift d) both directions
Heating sugar leading to char is an example of which of the following?
a) irreversible reaction b) reversible reaction c) equilibrium d) stress
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