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Answer 1-8 Chem

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8 views10 pages

Answer 1-8 Chem

answer

Uploaded by

hawariya abel
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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1. How would you prepare 250 mL of a 0.5M NaCl solution from a solid NaCl reagent?

(assume
molar mass of NaCl = 58.44 g/mol)
2. A lab technician needs to prepare 500 mL of a 0.1 M potassium permanganate (KMno4)
solution. How many grams of solid KMo4 would be required? (molar mass of KMno4 =
158.03 g/mol)
3. A student needs to prepare 100 mL of a 0.25 M sulfuric acid (H2SO4) solution from a 2.0 M
stock solution. What value of the stock solution is needed for the dilution?
4. You have a 12 M HCl solution. How much of this stock solution would you need to make 500
mL of a 1.5 M HCl solution?
5. Calculate the PH of a solution prepared by adding 60 ml of 0.100 M NaOH to 100 ml of 0.100
M HCl solution.
6. Rrrr
7.
8.
9.

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