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Topic: one simple question  (Read 5801 times)

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redXI

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one simple question
« on: August 31, 2005, 10:26:12 PM »
My teacher gave me a homework, but he didn't explain how to do it at all. And the other problem is that, the solution isn't available in the textbook.

Here is one of them:

Write the equations for Zinc Nitrate dissolves in water

Dissolves? I've never neard of it before. If somebody can give me how to do this one, I must be able to do the rest. Thanks.
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Offline Donaldson Tan

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Re:one simple question
« Reply #1 on: August 31, 2005, 10:41:05 PM »
Zn(NO3)2 (s) -> Zn2+ (aq) + 2NO3-(aq)
« Last Edit: August 31, 2005, 11:06:29 PM by geodome »
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Blueshawk

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Re:one simple question
« Reply #2 on: August 31, 2005, 10:59:14 PM »
Quote from: geodome on August 31, 2005, 10:41:05 PM
Zn(NO3)2 (s) -> Zn2+ (aq) + NO3-(aq)

you forgot to balance

Zn(NO3)2 (s) -> Zn2+ (aq) + 2NO3-(aq)
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Offline xiankai

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Re:one simple question
« Reply #3 on: September 01, 2005, 12:03:35 AM »
dissolution for salts usually involve the splitting up of its component ions, as illustrated in the previous posts.
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oldddog

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Re:one simple question
« Reply #4 on: September 02, 2005, 01:20:05 AM »
water is the greatest solvent on earth - it'll dissolve everything given enough time.
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oneofmillionusers

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Re:one simple question
« Reply #5 on: September 02, 2005, 05:55:28 AM »
Quote from: oldddog on September 02, 2005, 01:20:05 AM
water is the greatest solvent on earth - it'll dissolve everything given enough time.
Really ? Water should not dissolve non-polar molecules like mathane , CO . coz they dont form hydrogen bonds and dipole-dipole interaction with water which is polar . right ??
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redXI

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Re:one simple question
« Reply #6 on: September 02, 2005, 09:41:19 AM »
Ok, I can do it. Thanks everybody.
But there's one strange question, no, it's not about dissolving anymore, but this time:
Sodium bromide decomposes to yield the elements which it is made

 ??? ??? Uh, I don't get it at all.
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mad_einstein

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Re:one simple question
« Reply #7 on: September 02, 2005, 02:04:26 PM »
Sodium bromide decomposes to yield the elements which it is made????

SOUNDS LIKE, SODIUM AND BROMINE atom
         
NaBr   --Light--->  Na + Br (atom)

are you talkin about this?  ???
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