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Topic: How to find the net ionic reaction with only reactants/reagents?  (Read 2970 times)

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Offline Fizz

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For example, if I am given something like HCl and NaOH, or HNO3 and Ba(OH)2. Can someone explain how I would find the net ionic reaction or provide a link to a good tutorial on how to write the equation for the total/net reaction with only the reagents/reactants?

Offline Borek

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Re: How to find the net ionic reaction with only reactants/reagents?
« Reply #1 on: August 31, 2013, 06:52:42 AM »
First: write the reaction using molecules.

Second: rewrite all dissociated substances as ions.

Third: cancel out things that don't change and are present in the same amount on both sides.
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Offline Fizz

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Re: How to find the net ionic reaction with only reactants/reagents?
« Reply #2 on: August 31, 2013, 08:07:48 AM »
First: write the reaction using molecules.

Second: rewrite all dissociated substances as ions.

Third: cancel out things that don't change and are present in the same amount on both sides.

It is this step I am having trouble with.

HCl + NaOH -> ??

HNO3 + Ba(OH)2 -> ??

I don't know what to write for the products in the reactions.

Offline Borek

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Re: How to find the net ionic reaction with only reactants/reagents?
« Reply #3 on: August 31, 2013, 08:30:15 AM »
Then your problems is not with the net ionic equations, but with the reactions in general.

Both reactions are very similar. Hint: you have a strong acid and a strong base.
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Offline Fizz

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Re: How to find the net ionic reaction with only reactants/reagents?
« Reply #4 on: August 31, 2013, 08:49:24 AM »
I am still unsure. I can't find anything in my general chemistry 1 notes about strong acids or bases, but nevertheless we are required to know how to write out these reactions to solve homework problems assigned in our first week in regards to enthalpy, heat, etc. (for general chemistry 2) because we need to first calculate the limiting reagent to determine what amount of moles to use in the calculation.

I'm not sure what section of my textbook to look up to learn how to write out acid-base reactions. Do you know what terms I should search for on the internet or could you provide a good article on how to do so?

Also, what about other types of reactions are there besides acid-base ones? I think it's just coincidence the two reactions are provided happen to be acid-base reactions.

Offline Archer

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Re: How to find the net ionic reaction with only reactants/reagents?
« Reply #5 on: August 31, 2013, 09:13:21 AM »
It is this step I am having trouble with.

HCl + NaOH -> ??

HNO3 + Ba(OH)2 -> ??

I don't know what to write for the products in the reactions.

Basic chemistry

Acid + Alkali  :rarrow: Salt + Water

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Denis Leary.

Offline danteOne

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Re: How to find the net ionic reaction with only reactants/reagents?
« Reply #6 on: August 31, 2013, 06:22:13 PM »
First: write the reaction using molecules.

Second: rewrite all dissociated substances as ions.

Third: cancel out things that don't change and are present in the same amount on both sides.

It is this step I am having trouble with.

HCl + NaOH -> ??

HNO3 + Ba(OH)2 -> ??

I don't know what to write for the products in the reactions.

When certain molecules are in water they disassociate (break apart) into ions. Strong acids and strong bases dissociate completely in water.
for example HCl (a strong acid) breaks apart into the ions H+ and Cl- when it is added into water.

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