A 0.4755g sample containing (NH4)2C2O4 and inert materials was dissolved in H2O and made strongly alkaline with KOH, which is converted NH4+ to NH3. The liberated NH3 was distilled into 50.00mL of 0.05035 M H2SO4. The excess H2S04 was back-titrated with 11.13 Ml of 0.1214 NaOH. Calculate the %N in the sample. Hint: Determine the moles of titrant consumed via using the prepared titrant and subtracting the equivalent moles used in back-titration.

Fundamentals Of Analytical Chemistry
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Chapter17: Complexation And Precipitation Reactions And Titrations
Section: Chapter Questions
Problem 17.34QAP
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A 0.4755g sample containing (NH4)2C2O4 and inert materials was dissolved in H2O and made strongly alkaline with KOH, which is converted NH4+ to NH3. The liberated NH3 was distilled into 50.00mL of 0.05035 M H2SO4. The excess H2S04 was back-titrated with 11.13 Ml of 0.1214 NaOH. Calculate the %N in the sample.

Hint: Determine the moles of titrant consumed via using the prepared titrant and subtracting the equivalent moles used in back-titration.

 

10. A 0.4755g sample containing (NH4)2C204 and inert materials was dissolved in H₂O and made strongly
alkaline with KOH, which converted NH to NH3. The liberated NH3 was distilled into 50.00 mL of 0.05035
M H₂SO4. The excess H₂SO4 was back-titrated with 11.13 mL of 0.1214 M NaOH. Calculate the %N in the
Hint: Determine the moles of titrant consumed via using the prepared titrant and subtracting the equivalent
moles used in back-titration
Transcribed Image Text:10. A 0.4755g sample containing (NH4)2C204 and inert materials was dissolved in H₂O and made strongly alkaline with KOH, which converted NH to NH3. The liberated NH3 was distilled into 50.00 mL of 0.05035 M H₂SO4. The excess H₂SO4 was back-titrated with 11.13 mL of 0.1214 M NaOH. Calculate the %N in the Hint: Determine the moles of titrant consumed via using the prepared titrant and subtracting the equivalent moles used in back-titration
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