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ivolga24 [154]
3 years ago
12

oc Inmaking and Stu Dent are working together in lab to make a buffer. Doc measures exactly 30.0 mL of 0.0635 M acetic acid solu

tion while Stu measures exactly 45.0 mL of 0.0285 M sodium acetate solution. They combine the two solutions to form their buffer. Help Stu and Doc explore the propetires of their buffer by answering the next seven questions. First, what is the total volume of the buffer when the two solutions are combined
Chemistry
1 answer:
MAXImum [283]3 years ago
5 0

Answer:

The total volume of the buffer is 75,0mL

Explanation:

A buffer is a mixture of a weak acid with its conjugate base or a weak base with its conjugate acid.

The buffer than Stu and Doc made is:

CH₃COOH ⇄ CH₃COO⁻ + H⁺

Doc add 30.0 mL of 0.0635 M CH₃COOH while Stu add 45.0 mL of 0.0285 M NaCH₃COO (CH₃COO⁻)

Thus, the total volume of the buffer is:

30,0mL + 45,0mL =<em> 75,0 mL</em>

I hope it helps!

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Explanation:

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Answer:

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Why is water displacement an effective way of measuring the volume of an irregular solid?
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5 0
3 years ago
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help asap show work | a gas with a volume of 13L at a pressure of 197 kPA is allowed to expand to a volume of 23L. what is the p
Lera25 [3.4K]

Answer:

<h2>111 kPa</h2>

Explanation:

The new pressure can be found by using the formula for Boyle's law which is

P_1V_1 = P_2V_2

where

P1 is the initial pressure

P2 is the final pressure

V1 is the initial volume

V2 is the final volume

Since we're finding the new pressure

P_2 =  \frac{P_1V_1}{V_2}  \\

We have

P_2 =  \frac{13 \times 197000}{23}  =  \frac{2561000}{23}  \\  = 111347.826...

We have the final answer as

<h3>111 kPa </h3>

Hope this helps you

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