A. What was the number of the moles of HBR used in the experiment? B. What was t

Question

A. What was the number of the moles of HBR used in the experiment?

B. What was the number of moles of KOH required for the 2nd part of the experiment?

C. What was the number of moles neutralized by ONE antacid tablet?

D. For one tablet, what is the mass effectiveness?

E. Calculate the cost of one tablet.

F. Calculate the cost effectiveness of the tablet?

2. If there are 4*10^-3 moles of HI acid in a 125mL solution of the acid, what is the concentration of the acid (M)?

3. A titration occurs where 89.5mL of 2.2M HCl acid is initially used. A back titration with NaOH is conducted afterwards that consist of 1.8M concentration and a volume of 9.45mL. If this titration was performed on an antacid what were the moles neutralized by the antacid?

4. Supposed that 0.0145 moles are neutralized by an acid. If the total mass of just the tablets in a bottle is 48.17 grams-what is the mass effectiveness of a tablet?

5. A bottle contains 30 tablets of an antacid. The cost of the bottle is $14.52. If each tablet neutralizes 0.00356 moles of acid, what is the cost effectiveness of the tablets?

L. Evaluating Commercial Antacids 1.) A pharmaceutical lab was particular that was $78.00 for 15 testing evaluating a costly antacid priced at . The tablets themselves were very tabletssmall weighed around . A titration was and 0.9850 grams acid () . Afterwards to the performed with 12.5mL of a 1.1M hydrobromic HBrsolutiondetermine back titration, 4.5 mL of 0.801M KOH solution was utilized. a.) What was the number of moles of HBr used in the experiment? b) What was the number of moles of KOH required for the 2nd part of the experiment ? C.) What the of moles by ONE antacid tablet ) was number neutralized ? d.) For one tablet, what is the mass effectiveness? e.) Calculate the cost of one tablet? f.) Calculate the cost effectiveness of the tablet? 2.) If there are 4 x 10 moles of Hl acid in a 125mL solution of the acid, what is the concentration of the acid (M)? 3.) A titration occurs where 89.5mL of 2.2M HCl acid is initially used. A back titration with NaOH is conducted afterwards that consist of 1.8M concentration and a volume of 9.45mL. If this titration was performed on an antacid what were the moles neutralized by the antacid? 4.) Suppose that 0.0145 moles are neutralized by an acid. If the total mass of just the tablets in a bottle is 48.17 grams-what is the mass effectiveness of a tablet? 5.) A bottle contains 30 tablets of an antacid. The cost of the bottle is $14.52. If each tablet neutralizes 0.00356 moles of acid, what is the cost effectiveness of the tablets?

Explanation / Answer

A] Moles of HBr = MV = 12.5 * 1.1 / 1000 = 0.01375

B] Moles of KOH = MV = 3.6045*10^-3

C] Number of moles neutralized by one antacid =Moles of HBr -Moles of KOH = 0.0101455

D] Mass effectiveness = 0.0101455 moles of HBr = 0.82 gms

E]  $78.00 for 15 tablets. for one tablet = 78 /15 = 5.2$

F] Cost effectiveness = 0.82 / 5.2$ = 0.157

2. Concentration = moles / volume of solution in L = 0.032M

3] the moles neutralized by the antacid = Moles of HCl - Moles of NaOH

Moles = MV [ V in L]

so MOles neutralized by antacid = 0.17989

4] 0.0145 moles are neutralized by an acid. ;

so 0.0145 moles = 0.53 gms acid = HCl

Mass effectiveness of tablet = 0.53 gms

5] one tablet cost = 14.52 / 30 = 0.484 $

0.00356 moles of acid = 0.13 gms here acid = HCl

cost effectiveness = 0.13 / 0.484 = 0.269

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