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November 01, 2025, 01:12:56 pm
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NeedAspirin

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Arrow question?
« on: November 12, 2011, 11:50:11 pm »
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How do you know when to use the double arrow sign for chemical formulas?
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peterle1

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Re: Arrow question?
« Reply #1 on: November 12, 2011, 11:53:30 pm »
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all reactions that are not combustion reactions ?

not too sure but read this if you really want too lol...

http://www.ias.ac.in/resonance/January2010/p51-63.pdf
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nubs

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Re: Arrow question?
« Reply #2 on: November 12, 2011, 11:54:04 pm »
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If it's an equilibrium reaction, use a double arrow sign
Usually for strong acids, I don't think you would use a double arrow cause they almost completely react

And when you're writing redox half reactions, if you know that the reaction is an oxidation or a reduction one, you wouldn't use the double arrow sign i'm pretty sure
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Re: Arrow question?
« Reply #3 on: November 12, 2011, 11:56:48 pm »
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Quote from: Nirbaan on November 12, 2011, 11:54:04 pm
If it's an equilibrium reaction, use a double arrow sign
Usually for strong acids, I don't think you would use a double arrow cause they almost completely react

And when you're writing redox half reactions, if you know that the reaction is an oxidation or a reduction one, you wouldn't use the double arrow sign i'm pretty sure
Yeh as far as VCE level is concered, it's just for equilibrium reactions, which as said above included weak acids. And yeh strong acids is just the normal forward arrow.
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