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Nicole DeKay

Is it necessary to write state symbols in ionic equations and if so, why?

Allison Kosters  Follow

It is of extreme importance to state that the dissolution is happening in water, otherwise it could be mistakenly interpreted as a reaction in the gas state (most measurements of dissociation and other energies related to ionic compounds are done in the gas phase, not liquid solutions). If you are writing a sentence and mention that the dissolution is happening in aqueous media, then it's not that important to write the state symbols beside every reagent/product, but if you don't specifically mention it somewhere else then you should write all the details (remember science do not tolerate ambiguity, except for quantum physics haha).

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Claudio Giomini  Follow

Well if there are only dissolved ions you could (theoretically) leave the state symbols away if it is clear that you're working with solutions. But it is just a matter of form and definitely not bad to have them there for reasons of clarity and comprehensibility.

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