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Old Dec 19th 2017, 03:04 PM   #1
Chem86579
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Check the task please

Check the task please
1. The reaction speed the equation of which is Fe+H2SO4=FeSO4+H2↑will be the highest when we use
a) Fe granules and 0.1%-solution of H2SO4
b) Fe powder and 10%-solution of H2SO4
c) Fe granules and 10%-solution of H2SO4
d) Fe powder and 0.1%-solution H2SO4

My answer is b).

Last edited by Chem86579; Dec 19th 2017 at 03:06 PM.
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Old Dec 19th 2017, 07:37 PM   #2
oz93666
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the general rule is the more surface area of the metal , the faster , big lumps have less surface area per gram than fine powder ...

Stronger the acid , the more fast ...
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