classify the acids based in their basicity and give complete equation for their ionisation in water
Answers
Answer:
Where is the equation?????
Answer:
Basicity of the acid is the number of −OH group given by the acid on dissociation.
Type of bases according to basicity-
- Monobasic
Example - Hypo-phosphorus acid.
- Di-basic
Example - Phosphorus acid.
- Tri-basic
Example - Phosphoric acid.
Explanation :
In general, acids can be thought of as molecular compounds containing at least one hydrogen which is covalently bonded to a more electronegative atom. As an example, consider the compound hydrogen fluoride (HF)
The chemical equation describing the acid dissociation reaction of HF is given in Equation 8.2a. The products of the reaction, fluoride anion and the hydronium ion, are oppositely charged ions, and it is reasonable to assume that they will be attracted to each other. If they do come in contact, it is also reasonable to suggest that the process of hydrogen transfer that we described above can also happen in reverse. That is, H3O+ can hydrogen bond to the fluoride ion and the hydrogen can be transferred back, to form HF and water. The chemical equation describing this process is shown in Equation 8.2b. In fact, these two reaction do occur simultaneously (and very rapidly) in solution. When we speak of a set of forward- and back-reactions that occur together on a very fast time-scale, we describe the set of reactions as an equilibrium and we use a special double arrow in the chemical reaction to show this (Equation 8.2c). Equation 8.2c can be said to represent the equilibrium dissociation of HF in water.
HF (aq) + H2O(l) → H3O+ (aq) + F– (aq) Eq. 8.2a
HF (aq) + H2O(l)←H3O+ (aq) + F– (aq) Eq. 8.2b
HF (aq) + H2O(l) ⇄ H3O+ (aq) + F– (aq) Eq. 8.2c
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