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0.15M solution of weak acid HA has pHof 5.35 What is Ka?
To calculate the Ka value of the weak acid HA, you can use the pH of the solution and the formula for calculating the Ka. First, calculate the concentration of [H+], which is 10^(-pH). Then, use the expression for Ka: Ka = [H+][A-]/[HA], where [A-] and [HA] are assumed to be equal in a weak acid solution. Plug in the [H+] value you calculated and the initial concentration of HA to find Ka.
What is Ka in chemistry?
Ka in chemistry is the equilibrium constant that measures the strength of a weak acid in solution. It represents the extent of ionization of the acid in water. A higher Ka value indicates a stronger acid.
How does Ka affect equilibrium position?
Ka is the equilibrium constant for the dissociation of a weak acid. A higher Ka value indicates a stronger acid and therefore more products are formed during dissociation, pushing the equilibrium position to the right. Conversely, a lower Ka value indicates a weaker acid and less products are formed during dissociation, shifting the equilibrium position to the left.
Why is Ka an important value in chemistry?
For a weak acid, the value of Ka gives one an indication of the degree to which that weak acid will dissociate. This then gives one an idea of the acidity of that weak acid, and it can be easily compared to other weak acids.
What kind of solution would have Ka value that is much less than 1?
A weakly acidic solution.
