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May 17, 2025, 11:44:58 pm
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Author Topic: Overall Equations  (Read 1217 times)  Share 

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kego

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Overall Equations
« on: January 30, 2010, 06:31:04 pm »
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When given a worded question like:

Quote
For each of the following reactions write an overall equation.

a   lead hydrogen carbonate and sulfuric acid

b   sodium sulfite and nitric acid

c   iron(III) hydroxide and hydrochloric acid

d   calcium carbonate and nitric acid

What's the technique used to find what reactants?

For example, question B.
sodium sulfite and nitric acid --> ?
Na2SO3 + HNO3 --> ?
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Edmund

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Re: Overall Equations
« Reply #1 on: January 30, 2010, 06:34:43 pm »
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Just use the solubility table to determine which is the precipitate
« Last Edit: January 30, 2010, 11:31:23 pm by Edmund »
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cindyy

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Re: Overall Equations
« Reply #2 on: January 30, 2010, 11:07:35 pm »
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acid + metal --> salt + H2

acid + metal carbonate --> salt + CO2 + H2O

acid + metal hydrogen carbonate --> salt + CO2 + H2O

acid + metal hydroxide --> salt + H2O

acid + oxide --> salt + H2O

acid + sulfite --> salt + SO2 + H2O

do you mean that ?
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Edmund

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Re: Overall Equations
« Reply #3 on: January 30, 2010, 11:29:13 pm »
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It should look something like this:

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Studyinghard

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Re: Overall Equations
« Reply #4 on: January 30, 2010, 11:39:10 pm »
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Quote from: cindyy on January 30, 2010, 11:07:35 pm
acid + metal --> salt + H2

acid + metal carbonate --> salt + CO2 + H2O

acid + metal hydrogen carbonate --> salt + CO2 + H2O

acid + metal hydroxide --> salt + H2O

acid + oxide --> salt + H2O

acid + sulfite --> salt + SO2 + H2O

do you mean that ?

those r acid n base reasctions
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vexx

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Re: Overall Equations
« Reply #5 on: January 31, 2010, 12:18:13 am »
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Quote from: cindyy on January 30, 2010, 11:07:35 pm
acid + metal --> salt + H2

acid + metal carbonate --> salt + CO2 + H2O

acid + metal hydrogen carbonate --> salt + CO2 + H2O

acid + metal hydroxide --> salt + H2O

acid + oxide --> salt + H2O

acid + sulfite --> salt + SO2 + H2O

do you mean that ?

Yeah they are acid-base reactions.

A precipitate is an insoluble substance formed as a result of a reaction.
The solubility table can be used to determine which substances are dissolved and which aren't.
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cindyy

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Re: Overall Equations
« Reply #6 on: January 31, 2010, 10:39:36 am »
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but wait ... why would you need the solubility table when the question is asking for overall equations :S I am so lost ... lol
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Studyinghard

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Re: Overall Equations
« Reply #7 on: January 31, 2010, 10:47:29 am »
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When you mix one reactant and another, eg:    iron(III) hydroxide and hydrochloric acid

you get products. To see if those products will make solids(precipitates) or become aqueous you need to look at the solubility table. 

I posted an explanation on another thread.
http://vcenotes.com/forum/index.php/topic,22670.msg229800.html#msg229800

see if it helps :)
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cindyy

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Re: Overall Equations
« Reply #8 on: January 31, 2010, 01:24:58 pm »
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oh yeah i know that .. its just i didnt think that was what kego was asking thats all ! Lol
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