If the pKa is determined for the carboxylic acid proton is 3.61, what is the Ka? Give your answer to 2 significant figures.
Question
If the pKa is determined for the carboxylic acid proton is 3.61, what is the Ka?
Give your answer to 2 significant figures.
Solution
Sure, here are the steps to calculate the Ka from the pKa:
Step 1: Understand the relationship between Ka and pKa. The pKa is simply the negative log of the Ka. So, pKa = -log(Ka).
Step 2: To find the Ka when you know the pKa, you rearrange the equation to solve for Ka. This gives you Ka = 10^(-pKa).
Step 3: Substitute the given pKa value into the equation. So, Ka = 10^(-3.61).
Step 4: Use a calculator to find the value of 10^(-3.61). This gives you Ka ≈ 2.51 x 10^(-4).
Step 5: Round this value to 2 significant figures. The Ka value is approximately 2.5 x 10^(-4).
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