Unlike the other tests described on this page, the test for carbonate ions works whatever acid is added. Explain why, in a test for sulfate ions, the sample is acidified with hydrochloric acid first.

Cations can be identified with flame tests or precipitate tests using sodium hydroxide and ammonia solutions. Anions (halide, sulfate, and carbonate ions) can be identified using precipitate tests or ...

Sodium, Potassium and zinc have all been promising contenders for lithium's place in rechargeable batteries of the future, but researchers have added an unusual and more abundant competitor to the mix ...

This release is available in German. Ions—charged atoms or molecules—play an important role in nature, in our bodies as well as for science and technology. It is often necessary to trap, remove, mask, ...

Many bacteria and unicellular algae have light-driven pumps in their cell membranes: proteins that change shape when exposed to photons such that they can transport charged atoms in or out of the cell ...

Determination of sodium chloride level is critical for assessment of purity of yeast extracts. This case study demonstrates the validation of an ion chromatography method as a suitable analytical ...