First-Order Reaction Quiz

Froggy Jumps

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Test your knowledge on first-order reactions

zubia nadeem

United States

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First-Order Reaction Quiz


Froggy Jumps First-Order Reaction QuizVersion en ligne Test your knowledge on first-order reactions par zubia nadeem 1 Which equation represents a first-order reaction rate: d[A]/dt = -k[A]? a d[A]/dt = -k[B] b d[A]/dt = k[A] c d[A]/dt = -k[A] 2 For a first-order reaction, how does [A] change with time in a plot of ln[A] vs t? a It gives a straight line with slope -k b It curves downward exponentially c It gives a straight line with slope k 3 What is the half-life formula for a first-order reaction? a t1/2 = 1/k b t1/2 = ln2 / k c t1/2 = k / ln2 4 Which graph yields a straight line for a first-order reaction? a 1/[A] vs t b ln[A] vs t c [A] vs t^2 5 If k = 0.693 s^-1, what is t1/2? a 1 s b 0.693 s c 2 s 6 Which of the following is a common example of a first-order reaction? a Sodium hydrolysis b Catalytic hydrogenation c Decomposition of HI 7 How does rate depend on concentration in a first-order reaction? a Rate independent of [A] b Rate ∝ [A] c Rate ∝ [A]^2 8 Which statement about a first-order graph is true? a The slope equals -k in ln[A] vs t b The intercept is -k c The slope equals k in [A] vs t 9 Which real-world process is often modeled as first-order? a Enzyme catalysis with saturation b Radioactive decay c Second-order precipitation