is it possible to accurately determine the amount of base in the following two brands of antacid using the back titration method? True or false? Explain. The two brands are: 1)Gaviscon with 200 mg of Alginic acid & 40 mg of MgCO3per tablet 2)Alka-Seltzer with 325 mg of Acetylsalicylic acid (ASA), 1700 mg of NaHCO3 & 1000 mg of Citric acid per tablet

If the actual mass of a base used (sodium citrate dihydrate) in a buffer solution is 1.5 g, and the concentration of the acid used (5 mL, ammonium citrate) is 2 M, with a Ka of 4.06E-7, what is the concentration of this base (in M) in this buffer solution?

Q5

One of the titration curves in the diagram represents the titration of an aqueous sample of Na₂CO3 with strong acid; the other represents the titration of an aqueous sample of NaHCO3 with the same acid. Match the curves to the appropriate compound. A NaHCO3 14 B Na2CO3 12 B 10 a 8 A b 6 4 с 2 0 Volume of strong acid (ml) Hd

If you have determined your pKa values and located the equivalence points on the graph, and then you use a stronger concentration of base to titrate the unknown acids, could you successfully locate the equivalence points and pKa values? If so, how and how you would have to adjust volumen(if needed) to have a successful titration

The following solution mixture which is/are buffer... Select one or more. Select 5 correct answer(s) NaH₂PO4 and Na2HPO4 NH3 and (NH4)2SO4 HCOOH and Ba(HCOO)2 H3PO4 and NaH₂PO4 NaOH and Ba(HCOO)2

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aching and le The following graph shows the pH curve for the titration of 25 mL of a 0.1 M monoprotic acid solution with a 0.1 M solution of a monoprotic base. 14 pH 12 10 4 10 15 20 25 30 35 40 45 50 mL of 0.1 M base added (1) The pH curve represents the'titration of a acid with a base. (2) Choose a suitable indicator for the endpoint of the titration from the following pulldown list. Malachite green 0.2 1.8 Thymol blue 1.2 2.8 8.0 9.6 Previous Next Methyl orange Email Instructor Save and E ENG 令 口 US Home 8. 9.

For Na2CO3 titration, using two indicators, phenolphthalein and methyl orange, the stoichiometric relationship of Na2CO3 to HCl is