Question

Почему натрий не вытесняет металл из раствора соли ?

Answer 1

Натрий в ряду активности металлов один из самых активных, поэтому если он и не вытеснит какой-то металл, то это будут Литий(Li), Рубидий(Rb), Калий(К), Барий(Ва) и любой другой элемент выше(левее) натрия в ряду напряжений. Например, реакция Na+$Li_{2}$O не пойдет, тк литий наиболее активен. А вот в реакции $Cu_{2}$$(SO)_{4}$+Na=$Na_{2}SO_{4}$ + Cu всё ок-натрий вытеснил данный нам металл

Answer 2

Why Sodium Does Not Displace a Metal from a Salt Solution

When considering why sodium does not displace a metal from a salt solution, it's important to understand the reactivity series of metals. The reactivity series is a list of metals arranged in order of their reactivity, with the most reactive metals at the top and the least reactive at the bottom. Sodium is a highly reactive metal, but it cannot displace a metal from a salt solution if the metal is higher in the reactivity series.

Reactivity Series: The reactivity series of metals determines the likelihood of a metal displacing another metal from a solution of its salt. Metals higher in the reactivity series can displace metals lower in the series from their salts, but not vice versa.

Sodium's Reactivity: Sodium is a highly reactive metal and can displace less reactive metals from their salts. However, it cannot displace metals that are higher in the reactivity series.

Example: For instance, sodium cannot displace potassium from a potassium salt solution because potassium is higher in the reactivity series than sodium.

Conclusion: In summary, sodium does not displace a metal from a salt solution if the metal is higher in the reactivity series. This is due to the principle that a more reactive metal can displace a less reactive metal from its salt, but not the other way around.