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31 Cards in this Set
- Front
- Back
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Reaction rates equations can be written as the ____ rate of a reactant or the appearance rate of a ______. |
disappearance product |
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Catalysts speed up a reaction by _____ the __________ energy. |
lowering activation |
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Every 10 degree C increase in temperature increases the reaction rate by a factor of approximately.... |
2 |
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For a reaction A ---->, if the ln[A] v. time is linear with a negative slope, then the reaction is ____ order. |
first |
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For a reaction, A ----->, if the 1 / [A] v. time is linear with a positive slope, then the reaction is ____ order. |
second |
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For a reaction, A ----->, if [A] v. time is linear with a negative slope, then the reaction is ____ order. |
zero |
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For a reaction, A + B -----> products, if doubling [A] causes reaction to double while [B] is held constant, then the reaction order for A is.... |
1 |
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For a reaction, A + B -----> products, if doubling [A] causes reaction to quadruple while [B] is held constant, then the reaction order for A is.... |
2 |
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For a reaction, A + B -----> products, if doubling [A] and [B] both cause reaction rate to double, then the reaction order .... |
2 |
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For a reaction, A + B -----> products, if doubling [A] causes reaction to double, and [B] causes reaction rate to quadruple, then the reaction order is.... |
3 |
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Brackets, [ ], when put around a formula, mean .... |
concentration in Molarity or moles/liter |
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The only way to determine the reaction order is via....
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experimentation |
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This graph represents evidence for a ____ order reaction. |
first |
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This graph represents evidence for a ____ order reaction. |
second |
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This graph represents evidence for a ____ order reaction. |
zero |
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For the reaction, A ---->B , this reaction rate represents the ____ of B, which is ____ to the ______ of A. |
appearance equal disappearance |
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For the reaction, A ---->B , this rate is equal to _____ for the appearance of B. |
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The time required for a reactant concentration to reach half of its initial value is the.... |
half-life |
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Fast reactions have ____ half lives. |
short |
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The formula for half-life that is 0.693 / k = t for half life is only for _____ order reactions. |
first |
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The k used in the half life formula is the.... |
rate constant |
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Reaction rate units are always ____ per ____. |
Molarity per second ( M/s ) |
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For a reaction rate equation, the coefficient in the chemical reaction equation is multiplied by.... |
the change in time in the denominator |
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The negative sign in disappearance of reactants reaction rate formula is used merely to .... |
make the rate have a positive value, since without it, it would always be negative |
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The unit for k in rate laws is dependent on the __________ of the concentrations of the reactants. |
orders or exponents of the reactants |
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The unit for k, if the reaction order is 2, is ____. |
1/M s or M^-1 s^-1 |
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The unit for k, if the reaction order is 1 is ____. |
1/s or s^-1 |
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The unit for k, if the reaction order is 3 is ____. |
M^-2 s^-1 |
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A k value of 10^9 or higher is considered ____, while one less than 10^1 is considered ____. |
fast slow |
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Pressure can be used as concentration [M] since in PV = nRT, pressure is directly proportional to ___ over ____, which gives Molarity. |
n / V (moles per liter) |
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What is the rate law for this experimental data? |
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