CHEM 1411 DCCCD Acid Base Titration Lab Report

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nyvnohtunavru

Science

chem 1411

Dallas County Community College District

CHEM

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Acid-base titration lab report for KHP and NaOH. Standardization of NaOH using KHP, and analysis of unknown KHP sample.

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CHEM 1411 Acid-Base Titration Lab Acid-Base Titration Lab Report Sheet Name Date Partner Quiz / 20 Report / 80 Total / 100 Part I: Standardization of NaOH using KHP Trial 1 Mass of KHP Trial 2 Trial 3 0.323 g 0.307 g 0.308 g Moles of KHP (show work) mol mol mol Moles of NaOH (show work) mol mol mol Initial buret reading 0.00 mL 12.60 mL 23.80 mL Final buret reading 12.60 mL 23.80 mL 34.90 mL Volume of base added mL mL mL Volume of base added L L L M M M NaOH concentration (show work) Average Molarity of NaOH Show your work. ______________________ Part II: Analysis of an Unknown KHP Sample Trial 1 Mass of unknown KHP sample Trial 2 Trial 3 0.516 g 0.503 g 0.507 g Initial buret reading 0.00 mL 9.01 mL 17.80 mL Final buret reading 9.02 mL 17.80 mL 26.45 mL Volume of base added mL mL mL Volume of base added L L L Moles of NaOH (show work) mol mol mol Moles of KHP (show work) mol mol mol Mass of KHP (show work) g g g % KHP in sample (show work) % % % Average % KHP ________________ Show your work. North Lake College CHEM 1411 Acid-Base Titration Lab p. 2 Spring 2017 Conclusion: North Lake College CHEM 1411 Acid-Base Titration Lab p. 3 Spring 2017
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CHEM 1411 Acid-Base Titration Lab
Acid-Base Titration Lab Report Sheet
Name

Date

Partner

Quiz

/ 20

Report

/ 80

Total

/ 100

Part I: Standardization of NaOH using KHP
Trial 1
Mass of KHP

Trial 2

Trial 3

0.323 g

0.307 g

0.308 g

Moles of KHP (show work)

0.0016 mol

0.0015 mol

0.0015 mol

Moles of NaOH (show work)

0.0016 mol

0.0015 mol

0.0015 mol

Initial buret reading

0.00 mL

12.60 mL

23.80 mL

Final buret reading

12.60 mL

23.80 mL

34.90 mL

Volume of base added

12.60 mL

11.20 mL

11.10 mL

Volume of base added

0.0126 L

0.0112 L

0.0111 L

0.1254 M

0.1339 M

0.1373 M

NaOH concentration (show work)

Average Molarity of NaOH:

0.1322 M

Show your work.
• Moles of KHP
𝑚𝑜𝑙𝑒𝑠 𝐾𝐻𝑃 = 0.323 𝑔 𝐾𝐻𝑃 ∗ (

1 𝑚𝑜𝑙𝑒 𝐾𝐻𝑃
) = 0.00158 𝑚𝑜𝑙𝑒𝑠
204.22 𝑔

𝑚𝑜𝑙𝑒𝑠 𝐾𝐻𝑃 = 0.307 𝑔 𝐾𝐻𝑃 ∗ (

1 𝑚𝑜𝑙𝑒 𝐾𝐻𝑃
) = 0.00150 𝑚𝑜𝑙𝑒𝑠
204.22 ...


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