Homework Help: chemistry

Posted by key on Sunday, January 21, 2007 at 8:52am.

Need Help Finishing:

Purpose:
• To observe a chemical reaction.

Materials:
• Vinegar (acetic acid, CH3COOH)
• Baking soda (NaHCO3)
• Measuring cups and spoons
• Cup

Procedure:
1. Place ½ cup of vinegar in the cup.
2. Add 1 tablespoon on baking soda.
3. Record your observations.
(Observed a bubbling with a rising of the liquid which
was carbon dioxide escaping)

Questions:
1. Write the balanced equation for the first step in the reaction between vinegar and baking soda, with carbonic acid (H2CO3) as a product. What type of reaction is this?
( HC2H3O2 + NaHCO3--->NaC2H3O2 + H2CO3 ,
which is double replacemtent...is this correct?

Need Help with the rest.......

2. Write the balanced equation for the second step in the reaction, the liberation of carbon dioxide from carbonic acid. What type of reaction is this?
3. Write the combined, balanced equation for the complete chemical reaction between vinegar and baking soda.

Rule: Acids react with carbonates to yeild a salt, carbon dioxide, and sometimes water.

In your supposed synopisis, where carbonic acid is formed, it decomposes to water and carbond dioxide.

chemistry - april, Tuesday, February 12, 2008 at 6:02pm
this is a synthesis it is
na2 hj99 gre544431q345tgfdgfdshfd dksjfds0503 dfjkjag94496 bjfkudt854u689u45 ijkdsut84395884 gjkfdt438u6 jrkgu459u24

long answer
i know :)
!!
chemistry - april, Tuesday, February 12, 2008 at 6:02pm
this is a synthesis it is
na2 hj99 gre544431q345tgfdgfdshfd dksjfds0503 dfjkjag94496 bjfkudt854u689u45 ijkdsut84395884 gjkfdt438u6 jrkgu459u24

long answer
i know :)
!!
chemistry - Kelly, Thursday, February 21, 2008 at 3:56pm
CHEMISTRY IS GAY!!!!!!!!!!!!!!!!!

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