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November 01, 2025, 01:13:43 pm
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Author Topic: rates  (Read 934 times)  Share 

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riadnicolas

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rates
« on: October 23, 2008, 08:58:11 pm »
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does increasing the surface area of a reactant always increase the rate? because i encountered this problem in the insight exam
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Mao

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Re: rates
« Reply #1 on: October 23, 2008, 09:02:19 pm »
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yes. greater surface area -> more collisions -> higher rate of reaction
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riadnicolas

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Re: rates
« Reply #2 on: October 23, 2008, 09:05:04 pm »
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Quote from: Mao on October 23, 2008, 09:02:19 pm
yes. greater surface area -> more collisions -> higher rate of reaction

kk, have u encountered this problem? the solutions say it doesnt
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Collin Li

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Re: rates
« Reply #3 on: October 23, 2008, 09:06:09 pm »
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Only if the surface area in contact with the other reactant increases. For example, if I have a drop of acid on a 1 square metre sheet of metal, putting that same drop of acid on a 10 square metre sheet of metal won't change the rate at which hydrogen gas is produced.
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bec

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Re: rates
« Reply #4 on: October 23, 2008, 09:12:26 pm »
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Also, make sure you read the states...gases don't have surface area.
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