State Symbols Flashcards

All 5 cards in this deck

What are the state symbols used in chemical equations for solid, liquid and gas?

$(s)$ for solid, $(l)$ for liquid, $(g)$ for gas.

What does the state symbol $(aq)$ mean in a chemical equation?

Aqueous — the substance is dissolved in water.

True or false? Liquid water produced in a reaction is written as $\mathrm{H_2O(aq)}$.

False. It is written $\mathrm{H_2O(l)}$; $(aq)$ is only for substances dissolved in water.

What state symbol is given to an insoluble precipitate formed in a solution?

$(s)$, because it is a solid.

e.g. $\mathrm{BaSO_4(s)}$

What are the steps to add state symbols to an equation?

e.g. $\mathrm{HCl} + \mathrm{NaOH} \rightarrow \mathrm{NaCl} + \mathrm{H_2O}$

1. Substances dissolved in water get $(aq)$: $\mathrm{HCl(aq)}$, $\mathrm{NaOH(aq)}$, $\mathrm{NaCl(aq)}$.

2. Pure liquids get $(l)$: $\mathrm{H_2O(l)}$.

3. Insoluble solids get $(s)$ and gases get $(g)$: none here.