4. 25.0 mL of an unknown acidic solution was titrated with 42.7 mL of a 0.15 M NaOH solution. What is the M of the unknown acid? Show your calculation below.
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![Name: Jictorn Zunter
Pre-Lab Questions
1. An unknown solution turned a strip of red litmus paper blue. Is this solution acidic or basic?
basic
2. Which solution: 0.20 M NaOH or 0.20 M HCI, would you use to titrate an unknown solution that turned
blue litmus paper red?
3. A burette had an initial volume of 5.2 mL and a final volume of 32.6 mL, what is the amount of solution
from the burette that was used? Show you calculation below. Vz-V,=32.c6-5.ZML =27.4mL
4. 25.0 mL of an unknown acidic solution was titrated with 42.7 mL of a 0.15 M NaOH solution. What is
the M of the unknown acid? Show your calculation below.
5. What is the Normality of 0.25 M H2SO4
6. What is the N of 0.45 M Mg(OH)2
7. Using the formulas provided for you in the lab introduction, fill the missing areas in the following table
РОН
8.5
pH
[H'1
[OH]
3.7
3.2x108
1.7x103
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