Question

Example of acid and double salt

Answer 1

Double salts are salts containing more than one cation or anion, and are obtained by combination of two different salts which were crystallized in the same regular ionic lattice. Examples of double salts include alums (with the general formula MIMIII[SO4]2·12H2O) or Tutton's salts (with the general formula [MI]2MII[SO4]2·6H2O).[1] Other examples are potassium sodium tartrate, ammonium iron(II) sulfate (Mohr's salt), the alums, bromlite. Aluminium sulfacetate, Al
2SO
4(CH
3CO
2)
4, is an example of a double salt with two distinct anions; another is the salt Tl
4(OH)
2CO
3 where hydroxyl-centred triangles of thallium, [Tl
3(OH)]2+
, are a recurring structural motif.
and
Acids in food such as vinegar (acetic acid), soda water (carbonic acid) and lemon juice (citric acid) are weak acids. Some acidscan lose more than one proton. For example, carbonic acid can lose two protons, while citric and phosphoric acidscan lose three. Bases, called alkalis if an OH- is involved, accept protons.
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Answer 2

Sodium Hydrogen Sulphate [NaHSO4] - Acid Salt
Mohr's Salt [FeSO4.(NH4)2SO4.6H20] - Double Salt