Question

В одной пробирке находится раствор MgCl2 а в другой AlCl3 помощью какого реактива можно раличать растворы?H2SO4AgNO3BaSO4KOH

Answer 1

KOH,але я не впевнена

Взаимодействие с кислотами с образованием соли и воды (реакция нейтрализации):

Взаимодействие с кислотными оксидами с образованием соли и воды:

Взаимодействие с переходными металлами в растворе с образованием комплексной соли и водорода:

Также гидроксид калия получают электролизом растворов KCl, обычно с применением ртутных катодов, что дает продукт высокой чистоты, не содержащий примеси хлоридов.

Answer 2

Differentiating Between MgCl2 and AlCl3 Solutions

To differentiate between the solutions of MgCl2 and AlCl3, you can use a reagent that will cause a specific reaction with one of the solutions but not the other. Among the options provided, the reagent that can be used to differentiate between the two solutions is NaOH.

When NaOH is added to the solutions, it will cause a specific reaction with one of the solutions, allowing you to distinguish between them.

Reaction with MgCl2: When NaOH is added to a solution of MgCl2, it will form a white precipitate of magnesium hydroxide (Mg(OH)2) according to the following reaction: ``` MgCl2 + 2NaOH -> Mg(OH)2 + 2NaCl ``` This white precipitate indicates the presence of MgCl2.

Reaction with AlCl3: When NaOH is added to a solution of AlCl3, it will form a gelatinous white precipitate of aluminum hydroxide (Al(OH)3) according to the following reaction: ``` AlCl3 + 3NaOH -> Al(OH)3 + 3NaCl ``` This gelatinous white precipitate indicates the presence of AlCl3.

Therefore, by adding NaOH to the solutions and observing the resulting precipitate, you can differentiate between the solutions of MgCl2 and AlCl3.