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A student is asked to analyze a Na2CO3 sample by titrating it
with HCl. He/she weighs out 1.000 g of the unknown, dissolves it in
50 ml of deionized water, and titrates it with 0.100 M HCl. The
final equivalence point (i.e., the second one for methyl orange
indicator) occurs after the 24.00 mL of HCl have been added. What
is the weight of Na2CO3 in the unknown? (Formula weights: Na2CO3 =
105.99 g/mole; HCl = 36.46 g/mole)
A) 0.013 g
B) 0.064 g
C) 0.127 g
D) 0.254 g
E) none of the above
A student is asked to analyze a Na2CO3 sample by titrating it with HCl. He/she weighs...
For the preparation and standardization of NaOH with KHP im supposed to boil water for 1hr and 30 min to remove CO2....the problem is that if I don't boil it for that long and (30 min) b/c of not enough time but I put the water I boiled for 1/2 hr aproximately into a NaOH bottle with a CO2 absorber and stored it there for a few days. I would assume that I would have to boil the water again...but...
The following primary standards can be used for the standardization of bases except. a. Benzoic acid b. Oxalic acid c. CaCO3 d. KHP A solution that may contain NaOH, Na 2CO3, and NaHCO3, alone or in compatible combination was titrated with 0.1200 M HCl. The volume of the acid required to reach the phenolphthalein endpoint was 25.67 mL while 38.13 mL to reach the methyl red endpoint. What are the components of the mixture? a. Na2CO3 only b. NaOH only...
1) What chemical is the titrant in this experiment? What chemical is the analyte in this experiment? Experiment #8: Measuring the Vitamin C Content of Emergen-C™ Objectives: • Students will learn how to use a burette. • Students will learn how to use the iodine starch indicator system to monitor oxidation/reduction reactions. Students will learn how to conduct a titration to determine the amount of analyte in an unknown solution. • Students will learn about ascorbic acid's role as a...