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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.
What is the ka value of ammonium?
The Ka value of ammonium (NH4+) is 5.6 x 10^-10.
Which of the following Ka value represent the weakest acid?
ka= 1.62 x 10^-12
What is the ka value of HNO3?
The Ka value of nitric acid (HNO3) is approximately 25 × 10^6.
Which is the following describes the relationship between acid strength and Ka value for weak acids?
The Ka value of a weak acid is inversely related to its acid strength. A higher Ka value indicates a stronger acid, while a lower Ka value indicates a weaker acid. Acid strength is determined by the extent of dissociation of the acid in solution, with stronger acids having higher dissociation constants (Ka values).
What is the Ka value for hydrobromic acid?
The Ka value for hydrobromic acid (HBr) is approximately 9.0 x 10^-10.
What is the strongest pH value for an acid?
1
Who was the strongest supporter of popular sovereignty as a political value?
James Madison was the strongest supporter of popular sovereignty as a political value. He was also the father of the Constitution.
What is the ka value for ammonium chloride?
The Ka value for ammonium chloride is not applicable as it is a salt formed from the reaction between ammonia and hydrochloric acid. Ammonium chloride does not undergo significant dissociation in water to produce H+ ions, so it does not have a Ka value.
What is Ka for H2CO3 aq H aq HCO3 aq?
Ka= [h+][HCO3-]/[H2CO3]
What is the ka value for sulfamic acid?
The Ka value for sulfamic acid is approximately 1.0 x 10^-1.
How do you find pKa from Ka?
To find the pKa from Ka, you take the negative logarithm (base 10) of the Ka value. The formula is pKa = -log(Ka). This conversion helps simplify comparisons of acid strength.
Which of the following Ka values represent the weakest acid?
The Ka value closest to 1 x 10^-7 represents the weakest acid, as this value corresponds to a neutral solution and indicates a weaker dissociation of the acid.
