Following a standardization reaction, the concentration of an aqueous solution of NaOH is determined to be 0.4510 M. a. What is the mass of NaOH in 50.0 mL of this solution? Show your work. b. What mass of KHP would be needed to completely react with 50.0 mL of this NAOH solution? Show your work.

Appl Of Ms Excel In Analytical Chemistry
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Chapter9: Complexometric And Precipitation Titrations
Section: Chapter Questions
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I need help with questions 3a and 3b
Experiment # 11: Acid-Base Titration: Standardization of NaOH
Data and results
Data table *Remember to include units
Trial 1
Trial 2
Trial 3
Trial 4
Mass of KHC&H4O4 (KHP)
1.0210g
1.0284g
1.0476g
Initial buret reading (NaOH)
0.00ml
0.00ml
0.00ml
Final buret reading (NAOH)
15.78ml
15.00ml
15.27ml
Volume of NAOH used
15.78ml
15.00ml
15.27ml
Results table
Trial 1
Trial 2
Trial 3
Trial 4
1.0284g/204.22MW-0.50357 n
Moles of KHP
n=g/MW
Moles of NaOH
n(NaOH)=n(KHP)
n(NaOH)=n(KHP)=0.50357 n
Volume of NaOH (L)
15/1000=0.015 L
Molarity of NaOH
M= n/V
0.0050357n/0.015L=0.34 M
Average molarity of NaOH
0.34+0.3359+0.3168=0.99/3=0.3 average Molarity
Sample calculation:
Transcribed Image Text:Experiment # 11: Acid-Base Titration: Standardization of NaOH Data and results Data table *Remember to include units Trial 1 Trial 2 Trial 3 Trial 4 Mass of KHC&H4O4 (KHP) 1.0210g 1.0284g 1.0476g Initial buret reading (NaOH) 0.00ml 0.00ml 0.00ml Final buret reading (NAOH) 15.78ml 15.00ml 15.27ml Volume of NAOH used 15.78ml 15.00ml 15.27ml Results table Trial 1 Trial 2 Trial 3 Trial 4 1.0284g/204.22MW-0.50357 n Moles of KHP n=g/MW Moles of NaOH n(NaOH)=n(KHP) n(NaOH)=n(KHP)=0.50357 n Volume of NaOH (L) 15/1000=0.015 L Molarity of NaOH M= n/V 0.0050357n/0.015L=0.34 M Average molarity of NaOH 0.34+0.3359+0.3168=0.99/3=0.3 average Molarity Sample calculation:
3. Following a standardization reaction, the concentration of an aqueous solution of NaOH is
determined to be 0.4510 M.
a. What is the mass of NaOH in 50.0 mL of this solution? Show your work.
b. What mass of KHP would be needed to completely react with 50.0 mL of this NAOH
solution? Show your work.
Transcribed Image Text:3. Following a standardization reaction, the concentration of an aqueous solution of NaOH is determined to be 0.4510 M. a. What is the mass of NaOH in 50.0 mL of this solution? Show your work. b. What mass of KHP would be needed to completely react with 50.0 mL of this NAOH solution? Show your work.
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