Anita Akweshie-
what does the order of reaction show
how the concentration of a reactant affects the rate of reaction
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what is the relationship between the time and the concentration of reactant in a zero-order
the concentration of the reactant is inversely proportional to time
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what does it mean and look like graphically when the concentration of a reactant is inversely proportional to time
means that the concentration of the reactant decreases with increasing time and is a straight line going down
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what is the relationship between the time and the concentration of reactant in a first-order
the concentration of the reactant decreases with time
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what does a graph showing first order look like
a curve going downwards and eventually plateaus
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what is the relationship between the time and the concentration of reactant in a second-order
the concentration of the reactant decreases more steeply with time
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in a comparison between the first order and second order which decreases more
second order, the graph is steeper going downwards
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how can the progress of the reaction be followed
by measuring the initial rates of the reaction using various initial concentrations of each reactant and making a rate-time graph
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what does a rate-concentration graph for a zero order look like and why
a horizontal line as the rate doesnt depend on the concentration of the reactant
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what is the rate equation for the zero order
rate = k
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what does a rate-concentration graph for a first order look like and why
the graph is a straight diagonal vertical line as the rate of the reaction is proportional to the concentration of the reactant
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what is the rate equation for a reaction of first order
rate = k [A]
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what is the relationship between the reaction rate and the concentration of a reactant in the second order
directly proportional to the square of the reactant
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what does a reaction rate-reactant concentration graph fro the second order look like and why
a curved line as the rate of the reaction decreases more as the concentration of the reactant decreases as it gets used
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what is the rate equation for a reactant of the second order
rate = k [A]2
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the order of reaction can be deduced from
its half-life (t1/2 )
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for a zero order reaction what would be the trend in successive half-lives and its meaning
the successive half lives decrease with time meaning that it would take less time for the concentration of the reactant to halve as the reaction progresses
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for a first order reaction what would be the trend in successive half-lives and its meaning
the successive half lives remain constant meaning that the amount of time required for the concentration of reactants to halve will be the same throughout the reaction
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for a second order reaction what would be the trend in successive half-lives and its meaning
the half -life increases with time meaning that as the reaction is progressing it takes more time for the concentration of reactants to halve
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how can the initial rate of reaction be calculated
by using initial concentrations of the reactants in the rate equation
