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| 1 . |
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If we have the reaction A(g) --> 2B(g) and the number of moles of A is as follows, | time | 0 | 5 min | 10 min | | moles A | 0.100 | 0.085 | 0.070 | what is the number of moles of B at 10 min? Online Text [Hint]
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| 2 . |
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From a plot or reasonable estimate, what is the instantaneous rate of change of A versus time at 10 min? | Time | 0 | 2.50 | 5.00 | 7.50 | 10.0 | 12.5 | | [A] | .500 | .389 | .303 | .236 | .184 | .143 | Online Text [Hint]
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| 3 . |
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Use the table of data shown below to calculate the average rate of the reaction between 10 sec and 20 sec. | A --> B | | time (sec) | | [A] mol/L | | 0 | | 0.20 | | 5 | | 0.14 | | 10 | | 0.10 | | 15 | | 0.071 | | 20 | | 0.050 | Online Text [Hint]
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| 4 . |
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For the hypothetical gas-phase reaction 3A(g) --> 2B(g), the number of moles of A present at 25 min is found to be .022. If the initial number of moles of A and B were 0.050 mol and 0.00 mol, respectively, how much B is present at 25 min? Online Text [Hint]
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| 5 . |
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Consider the combustion of H2(g): 2H2(g) + O2(g) --> 2H2O(g) If hydrogen is burning at the rate of 4.6 mol s-1, what are the rates of consumption of oxygen and formation of water vapor? Online Text [Hint]
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| 6 . |
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Consider the combustion of methane, CH4(g): CH4(g) + 2O2(g) --> 2H2O(g) + CO2(g). If methane is burning at the rate of 2.1 mol s-1, what are the rates of consumption of oxygen and formation of water vapor? Online Text [Hint]
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| 7 . |
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For the gas-phase reaction H2(g) + F2(g) --> 2HF(g), how is the rate of disappearance of H2 related to the rate of appearance of HF? Online Text [Hint]
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| 8 . |
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Consider the reaction 3A --> 2B. The average rate of appearance of B is given by [B]/t. How is the average rate of appearance of B related to the average rate of disappearance of A? Online Text [Hint]
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| 9 . |
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Consider the hydrolysis of t-butyliodide, the equation for which is (CH3)3CI + H2O ---> (CH3)3COH + HI. The equation governing the rate of this reaction is rate = k[(CH3)3CI]. What is the order of each reactant and the overall order of the reaction? Online Text [Hint]
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| 10 . |
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The decomposition of N2O5 in carbon tetrachloride proceeds as follows: 2N2O5 --> 4NO2 + O2 The rate law is first-order in N2O5. Write the rate law for the reaction. Online Text [Hint]
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| 11 . |
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The reaction 2NO + 2H2 --> N2 + 2H2O is first-order in H2 and second-order in NO. Write the rate law for the reaction. Online Text [Hint]
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| 12 . |
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If the reaction 2A + 3D --> products is first-order in A and second-order in D, then the rate law will have the form rate = Online Text [Hint]
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