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Topic: Glucose in water, Sodium metal in water.  (Read 3055 times)

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Offline guybrush

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Glucose in water, Sodium metal in water.
« on: February 25, 2010, 07:49:09 AM »
Hi,

I have been given a question to answer, its not for an assignment but just a general question.

Addition of glucose to water leads to its disappearance. Addition of sodium metal to water leads to its disappearance. Is the chemistry of the two disappearances the same?

I understand glucose will dissolve because it has a lot of OH groups than can react with H2O molecules.  Im not sure about the sodium one (Bar that it is very reactive and forms Sodium Hydroxide) and whether the chemistry of the two is the same.

Any ideas?

Offline skyjumper

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Re: Glucose in water, Sodium metal in water.
« Reply #1 on: February 25, 2010, 09:28:37 AM »
Well, technically the glucose isn't reacting, just dissolving in the water, sugar in water... its just dissolving, floating around the water molecules. On the other hand, the sodium is indeed reacting wit the water, so as there is no water left in the reaction when it is finished per the equation
2Na(s) + 2H2O(l) ----> 2NaOH(aq) + H2(g) The H2O is actually used in the reaction, while glucose isn't reacting with the water at all perse

Offline guybrush

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Re: Glucose in water, Sodium metal in water.
« Reply #2 on: February 25, 2010, 04:14:03 PM »
Excellent, thankyou for that.

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