During the lab, you obtain the following data. Fll In the table using the correc

Question

During the lab, you obtain the following data. Fll In the table using the correct number of sigfcant figures. While the incorrect number of significant figures may be accepted, it Is a good Idea to use the correct number to ensure your answer is within the 3% error acceoted in all answers. Volume of Soda Used Standardized Concentration of NaoH Initial Volume NaOH Final Volume NaOH 3.2 mL 0.041 M NaOH .00 6.75 Volume NaOH Used mL NaOH indicate haw many dlecimal spaces your aawer saulSelect an anawerdecimals decimals tan answer Previewmol Mol NaOH NaOH ndicete how msny sgnif cent fgures your enswer shoud have Seec an answarsignificant figures 1 mol NaOH 1 mol H 3 mol Ht 1 mol citric acid Mol to Mol Ratio Preview mol citric acid Mol Citric Acid Preview M citric Concentration of citric Acid in the Soda acid Indicate how many s grif cant f gures your an Select an anewer significant figures shouid have

Explanation / Answer

MOlarity of NaOH = 0.041 M

volume of NaOH used = final volume - intial volume

= 26.75 -7.00 mL

= 19.75mL

=0.01975 L

moles of NaOH used = Volume (L) x molarity

= 0.01975L x 0.041mol/L

= 8.097x10-4 mol

Since moles of NaOH = moles of H+

moles of H+ in sample = 8.097x10-4 mol

and moles of citric acid = moles of H+ /3

= 8.097x10-4 mol /3

=2.699x10-4 mol

concentration of citric acid in the sample = molarity = moles/V(L)

=2.699x10-4 mol /3.2 x10-3 L

= 0.08435 M

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