Problem: What volumes of 0.50 M HNO2 and 0.50 M NaNO2 must be mixed to prepare 1.00 L of a solution buffered at pH = 3.55?

🤓 Based on our data, we think this question is relevant for Professor Delgado's class at FIU.

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pH = pKa + log(conjugate baseweak acid)log(conjugate baseweak acid) = pH - pKa log(conjugate baseweak acid) = pH -(- log Ka) log(conjugate baseweak acid) = 3.55- (-log(4.6 × 10-4) )log(conjugate baseweak acid) =0.2128log(conjugate baseweak acid)log =0.2128log(conjugate baseweak acid) =100.2128(conjugate baseweak acid) =1.6321


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Problem Details

What volumes of 0.50 M HNO2 and 0.50 M NaNO2 must be mixed to prepare 1.00 L of a solution buffered at pH = 3.55?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Buffer concept. You can view video lessons to learn Buffer. Or if you need more Buffer practice, you can also practice Buffer practice problems.

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Based on our data, we think this problem is relevant for Professor Delgado's class at FIU.

What textbook is this problem found in?

Our data indicates that this problem or a close variation was asked in Chemistry: An Atoms First Approach - Zumdahl 2nd Edition. You can also practice Chemistry: An Atoms First Approach - Zumdahl 2nd Edition practice problems.