Amalgam (chemistry) with copper. A nitric acid solution of salts under investigation is applied to a piece of copper foil, and any mercury ions present will leave spots of silvery-coloured amalgam. Silver ions leave similar spots but are easily washed away, making this a means of distinguishing silver from mercury. The redox reaction involved where mercury oxidizes the copper is: Dental amalgam has been studied and is generally considered to be safe for humans, though the validity of some studies and their conclusions have been questioned. Amalgam (chemistry) An amalgam is an alloy of mercury with another metal, which may be a
Neutralization (chemistry) In general, for an acid AH at concentration "c" reacting with a base B(OH) at concentration "c" the volumes are related by: An example of a base being neutralized by an acid is as follows. The same equation relating the concentrations of acid and base applies. The concept of neutralization is not limited to reactions in solution. For example, the reaction of limestone with acid such as sulfuric acid is also a neutralization reaction. Such reactions are important in soil chemistry. A strong acid is one that is fully dissociated in aqueous solution. For example, hydrochloric acid, HCl, is a