Question

Which of the following substance will be a mixed salt
A. $NaHC{O_3}$
B. $CaOC{l_2}$
C. ${K_2}S{O_4}A{l_2}{(S{O_4})_3}.24{H_2}O$
D. $Mg(OH)Br$

Answer 1

Hint: The ionic substance known as salt is composed of a cation (base) and an anion (charge) (acid). Sodium chloride is one of the most well-known salts. One salt is used so frequently in daily life that almost everyone is familiar with it.

Complete Step by Step Solution:
Different types of chemical compounds are classified using various bases. Anion and cation are both components of salts, which are inorganic substances. In an organic compound, the cation is not a proton (H⁺) and the anion is not hydroxide (OH^-). Because an acid can be any substance that releases a proton. The substance that has the ability to release hydroxide ions is referred to as a base.

A fixed mixture of two salts, frequently sharing a similar cation or anion, makes up mixed salt. A mixed is one that offers two different kinds of cations and anions.
$NaHC{O_3} \Rightarrow $ acidic salt
${K_2}S{O_4}A{l_2}{(S{O_4})_3}.24{H_2}O \Rightarrow $ double salt
$CaOC{l_2} \Rightarrow $ mixed salt as it has two ions $C{l^ - }$ and $OC{l^ - }$ along with $C{a^{ + 2}}$ ion.
Hence the correct option is B.

Additional information: Salts can also be categorised as acidic, basic, or double salts. Acidic salts: An acidic salt is a salt that is created when a diprotic or polyprotic acid is partially neutralised.
Basic salts: A weak acid partially neutralises a strong base to generate a salt known as a basic salt.
Double Salts: Double salts are ones that include two or more cations or anions.

Note: Double salts are distinct from mixed-crystal systems, which happen when two salts crystallise; the latter is a mixture, whereas the former is a chemical combination with a set composition. In general, the created double salt will have different properties than the single salts that make up the double salt.