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Topic: Writing chemical reactions  (Read 541 times)

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Offline id1oteque

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Writing chemical reactions
« on: October 15, 2019, 03:40:03 PM »
When writing a redox reaction, how do you know what element/compound to put as the product? Also, does it matter which reactant is written first on the left side of the formula?


2AgNO3+Cu--->Cu(NO3)2+2Ag    (why copper nitrate instead of silver)


2Al+ 3CuCl2---> 3Cu + 2AlCl3   (why copper instead of aluminum chloride)



Any help is appreciated!

Offline AWK

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Re: Writing chemical reactions
« Reply #1 on: October 15, 2019, 04:17:27 PM »
For now, you are working with single exchange reactions that are the simplest and you already have great troubles. In this case, just check the redox potentials.
On this basis (based on the position in the table or the numerical values ​​of the radicals) you are able to approximate whether the reaction is spontaneous.

The order of the reagents on the left or right side of the equation is arbitrary.

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