The ph of 0.10 m solution of an acid is 6. what is the acid dissociation constant of the acid? 10-11 10-12 10-5 10-6

Dissociation constant of the acid is .

Explanation: Assuming the acid to be monoprotic, the reaction follows:

pH of the solution = 6

and we know that

As HA ionizes into its ions in 1 : 1 ratio, hence

As the reaction proceeds, the concentration of acid decreases as it ionizes into its ions, hence the decreases concentration of acid at equilibrium will be:

Dissociation Constant of acid, is given as:

Putting values of in the above equation, we get

Rounding it of to one significant figure, we get

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.