Hwk10 - lakhani(ral963 Homework 10 Sutclie(52440 This print-out should have 20 questions Multiple-choice questions may continue on the next column or

# Hwk10 - lakhani(ral963 Homework 10 Sutclie(52440 This...

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lakhani (ral963) – Homework 10 – Sutcliffe – (52440) 1 This print-out should have 20 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. This is the LAST homework!! 001 10.0 points NOTE: In this question the equation is assum- ing you INCLUDE the 1/a term for species A. Consider the reaction 2 NO 2 (g) + F 2 (g) 2 NO 2 F(g) rate = - Δ[F 2 ] Δ t . What is another form of the rate of thereaction?For BOTH the next questions you MUSTconsider the 1/a term in the rate equationfor species A, etc.A ”unique rate” means’average rate’ taking into account the stoi-chiometric coefficients.In the reaction 1.-Δ[NO2]Δt2.-2 Δ[NO2]Δt3.Δ[NO2F]2 Δtcorrect Explanation: 002 10.0 points Consider the concentration-time dependence graph for two first-order reactions. [A] 0 Molar Concentration of Reactant Concentration -→ Time -→ Which reaction has the larger rate con- stant? 1. the reaction represented by the upper curve 2. Unable to determine 3. the reaction represented by the lower curve correct Explanation: 003 (part 1 of 2) 10.0 points What is the rate of reaction of ClO? 3. 1 . 8 mol L · min 4. 5 . 4 mol L · min correct 5. 10 . 8 mol L · min Explanation: rate of change of [ClO ] = parenleftbigg 3 . 6 mol Cl L · min parenrightbiggparenleftbigg 3 mol ClO 2 mol Cl parenrightbigg = 5 . 4 mol L · min 004 (part 2 of 2) 10.0 points What is the unique rate of the reaction? 1. 1 . 8 mol L · min correct
lakhani (ral963) – Homework 10 – Sutcliffe – (52440) 2

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• Fall '07
• Holcombe
• Chemistry, Chemical reaction, Rate equation, 0.111 M, 0.112 m