Explain why, in a test for sulfate ions, the sample is acidified with hydrochloric acid first. Carbonate ions also produce a white precipitate with barium chloride solution. The acid reacts with ...

However, new batteries sometimes lose their charge for a variety of reasons ... or sealed maintenance-free car batteries) produce lead sulfate when discharging stores up power.

A modular metabolism may explain the environmental success of certain sulphate-reducing bacteria. This is the result of a study published this week in the journal Science Advances. A research team led ...