It is the aqueous solution of combination of weak acid and its conjugate base or weak base and its conjugate acid which restricts the change in the PH of the reaction.
It can be classified into two parts as acidic or alkaline buffer
It has acidic pH and is prepared by mixing a weak acid with its salt with a strong base.
For e.g Acetic acid and sodium acetate has a pH of 4.74.
This maintains the basic conditions which has a basic pH and is prepared by mixing a weak base and its salt with strong acid.
For e.g Ammonium hydroxide and ammonium chloride has a pH of 9.25.
A volumetric technique, of determining the unknown concentration of a solution by the known concentration of a solution in the presence of indicator is called Titration
Titrations can be classified as:
The point in the process of titration where the chemical reaction of a mixture ends is called the equivalence point whereas the point where change of colour is observed is known as end point.
The aim of the titration is to find the equivalence point, which is the point where chemically equivalents of the reactants are combined. It consist of two terms as.
Titrant is the known solution added from a burette to a known quantity of the analyte which is the unknown solution.
It is defined as the maximum amount of the solute that dissolves in 100 ml of the solvent at a given temperature and pressure is called solubility.
The ions in an ionic solid are held together by strong electrostatic forces of attraction. Certain combinations to define solubility are:
Ksp is the solubility product of the reaction for given species
The ion product (Q) of a salt is the product of concentrations of the ions in solution raised to the same powers as in the solubility product expression.
Ksp describes equilibrium concentrations, the ion product shows concentrations that are not necessarily equilibrium concentrations.
The certain conditions are:
Q1 Buffer Resist the change in pH of solution by
Mixing with the strong acid of low pH
Mixing with the strong base of high pH
Mixing of weak acid and its salt
None of the above
Ans C) Mixing of weak acid and its salt
Q2 In the titration where unknown concentration is to be determined is termed as
Ans A) Titrate is also called as analyte
Typically introduced in 10th Grade Chemistry Honors courses or in Grade 11 in the chemistry school curriculum in the United States, the topic of Chemical Solutions and Equilibrium is a deep and complicated one.
For High School students, AP Chemistry courses many times involve Solubility Rules. For success in the AP course, one is required to memorize the general solubility rules & share predictions about precipitate formation during a double replacement reaction.
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