Video: Converting Simple Chemicals from Chemical Form to Ionic Form

What is the ionic form of the chemical expression CuSO₄ (aq)?


Video Transcript

What is the ionic form of the chemical expression CuSO4 aqueous?

We can see that the state symbol in this chemical expression is aq or aqueous, meaning that this substance is dissolved in water. When ionic substances are dissolved in water, they break apart into the positive and negatively charged ions that make them up. So if we want to create the ionic form for the expression CuSO4 aqueous, we need to figure out what ions CuSO4 is made of. Well, Cu is the symbol for copper. Copper forms positively charged ions, but it can form ions of multiple different charges. So we’ll need to figure out what its charge is by looking at the other ion in this expression.

SO4 is the polyatomic ion sulphate, which has the charge two minus. So that means in order for this compound to have an overall neutral charge, copper must have a charge of two plus, meaning that this compound is copper(II) sulfate. Of course, we shouldn’t forget our state symbols since these ions are still in water. So the ionic form of the chemical expression CuSO4 aqueous is Cu2+ aqueous plus SO42− aqueous.

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