(FINAL) Chemistry Notebook 2016-17

2CO + O2 → 2CO2
6 If the above reaction takes place inside a sealed reaction chamber, then which of these procedures
will cause a decrease in the rate of reaction?
A raising the temperature of the reaction chamber
B increasing the volume inside the reaction chamber
C removing the CO2 as it is formed
D adding more CO to the reaction chamber
* By increasing the volume of the reaction chamber, the reactants occupy more space, making it so
that the particles of the reactants don’t collide as often as they would’ve in that smaller space, so the
reaction rate would decrease.*
7 A catalyst can speed up the rate of a given chemical reaction by
A increasing the equilibrium constant in favor of products.
B lowering the activation energy required for the reaction to occur.
C raising the temperature at which the reaction occurs.
D increasing the pressure of reactants, thus favoring products.
*Catalysts lower the activation energy (minimum energy for a reaction to occur) of a reaction,
therefore making a reaction require less energy to actually occur. They not only lower the activation
energy, but this also gives reactants more energy to form products within a given time, which
increases the rate of reaction. *
8 Which reaction diagram shows the effect of using the appropriate catalyst in a chemical reaction?
A
C
B
D
*A catalyst lowers the energy required for the reaction to occur and the reaction would not reach the
energy levels that the same reaction without the catalyst would reach, as demonstrated by the graph
without the catalyst vs. with the catalyst. *
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