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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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rivetcolin rivetcolin
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11 years ago
During the reaction of magnesium with dilute sulfuric acid to produce hydrogen gas, the pH of the reaction would
a) rise from a low value
b) fall from a high value
c) stay constant at a low value
d) stay constant at a high value
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Replies
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#1
11 years ago
A) is the correct answer.  The pH of the reaction would become more positive rising from a low number to a higher value.

Here is why.  Mg + H2 SO4 = Mg SO4 + H2 (g)

The hydrogen ion which makes the solution an acid is removed from the solution and given off as a gas.  With less hydrogen ion present, the solution is less acid and has a higher pH value.
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michdomichdo
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#2
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11 years ago
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