Question: What is the relationship between pKa and Ka for an acid?
Options:
pKa = -log(Ka)
pKa = log(Ka)
pKa = Ka
pKa = 1/Ka
Correct Answer: pKa = -log(Ka)
Solution:
The relationship is given by the formula pKa = -log(Ka), where Ka is the acid dissociation constant.
What is the relationship between pKa and Ka for an acid?
Practice Questions
Q1
What is the relationship between pKa and Ka for an acid?
pKa = -log(Ka)
pKa = log(Ka)
pKa = Ka
pKa = 1/Ka
Questions & Step-by-Step Solutions
What is the relationship between pKa and Ka for an acid?
Correct Answer: pKa = -log(Ka)
Step 1: Understand that Ka is a number that tells us how strong an acid is. It is called the acid dissociation constant.
Step 2: Know that pKa is another way to express the strength of an acid, but it is a smaller number that is easier to work with.
Step 3: Learn the formula that connects pKa and Ka: pKa = -log(Ka).
Step 4: Realize that if Ka is a big number (strong acid), pKa will be a small number. If Ka is a small number (weak acid), pKa will be a bigger number.
Step 5: Use the formula to convert between Ka and pKa when needed.
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