DATA: Name of Antacid: __Tums( sodium carbonate_)________________ Recommended do
ID: 812141 • Letter: D
Question
DATA: Name of Antacid: __Tums( sodium carbonate_)________________
Recommended dose: _2-3 tablets__________________ Molarity HCl used: _0.9826___________M
Molarity NaOH used: ___1.003_________M
Mass of Tablet 1: __2.5912______________ g
Initial HCl buret reading: ________4.00________ mL Initial NaOH buret reading: __0______________ mL Final HCl buret reading: _____34.00___________ mL Final NaOH buret reading: 11.04_____________ mL Volume HCl added: _30.00________ mL Volume NaOH added: _11.04_______________ mL
Mass of Tablet 2: _2.5937_______________ g
Initial HCl buret reading: __0__________ mL Initial NaOH buret reading: __0______________ mL Final
HCl buret reading: __30.00__________ mL Final NaOH buret reading: _____9.02___________ mL
Volume HCl added: ___30.00_____________ mL Volume NaOH added: _9.02_______________ mL
Beaker 1 Beaker 2
Moles H+ used to dissolve tablet: ________________moles ________________moles
Moles OH? used to titrate excess: ________________moles ________________moles
Moles H+ neutralized by tablets: ________________moles ________________moles
Average moles H+ neutralized per tablet: ________________moles/tablet
Average moles H+ neutralized per gram of tablets: ________________moles/g (use the average tablet mass)
1. Write the balanced net ionic equation for the reaction of HCl with the active ingredient in your tablet.
Active Ingredient(s): __________________________ ________________________________________________________________________________ 2. Calculate the cost of neutralization in dollars per mole of acid neutralized by one tablet.
(cost per tablet: _$7.28 for a 1000 tums tablets_____________) Answer: __________________________
3. (a) Using the mass of active ingredient (antacid) per tablet found on the antacid container, calculate the volume of 0.10 M HCl that can be neutralized by one tablet.
(b) Assuming that the density of 0.10 M HCl is 1.0 g/mL, what mass of 0.10 M acid can be neutralized by one tablet? (c) Determine the ratio of the mass of the HCl(aq) solution to the mass of one tablet. (average of your 2 tabs)
(a) Volume 0.10 M HCl ______________
(b) Mass 0.10 M HCl _______________
(c) Number of times its weight ______________ (show calc's below)
4. Calculate the mass of ACTIVE INGREDIENT per tablet based on your moles of H+ neutralized per tablet. Compare with the information given on the label. (Formula of ACTIVE INGREDIENT: ___________ ) Answer: ___
DATA: Name of Antacid: __Tums( sodium carbonate_)________________ Recommended dose: _2-3 tablets__________________ Molarity HCl used: _0.9826___________M Molarity NaOH used: ___1.003_________M Mass of Tablet 1: __2.5912______________ g Initial HCl buret reading: ________4.00________ mL Initial NaOH buret reading: __0______________ mL Final HCl buret reading: _____34.00___________ mL Final NaOH buret reading: 11.04_____________ mL Volume HCl added: _30.00________ mL Volume NaOH added: _11.04_______________ mL Mass of Tablet 2: _2.5937_______________ g Initial HCl buret reading: __0__________ mL Initial NaOH buret reading: __0______________ mL Final HCl buret reading: __30.00__________ mL Final NaOH buret reading: _____9.02___________ mL Volume HCl added: ___30.00_____________ mL Volume NaOH added: _9.02_______________ mL Beaker 1 Beaker 2 Moles H+ used to dissolve tablet: ________________moles ________________moles Moles OH? used to titrate excess: ________________moles ________________moles Moles H+ neutralized by tablets: ________________moles ________________moles Average moles H+ neutralized per tablet: ________________moles/tablet Average moles H+ neutralized per gram of tablets: ________________moles/g (use the average tablet mass) 1. Write the balanced net ionic equation for the reaction of HCl with the active ingredient in your tablet. Active Ingredient(s): __________________________ ________________________________________________________________________________ 2. Calculate the cost of neutralization in dollars per mole of acid neutralized by one tablet. (cost per tablet: _$7.28 for a 1000 tums tablets_____________) Answer: __________________________ 3. (a) Using the mass of active ingredient (antacid) per tablet found on the antacid container, calculate the volume of 0.10 M HCl that can be neutralized by one tablet. (b) Assuming that the density of 0.10 M HCl is 1.0 g/mL, what mass of 0.10 M acid can be neutralized by one tablet? (c) Determine the ratio of the mass of the HCl(aq) solution to the mass of one tablet. (average of your 2 tabs) (a) Volume 0.10 M HCl ______________ (b) Mass 0.10 M HCl _______________ (c) Number of times its weight ______________ (show calc's below) 4. Calculate the mass of ACTIVE INGREDIENT per tablet based on your moles of H+ neutralized per tablet. Compare with the information given on the label. (Formula of ACTIVE INGREDIENT: ___________ ) Answer: ___Explanation / Answer
Moles H+ used to dissolve tablet: ________________moles ________________moles
moles = molarity x volume in liters.
For tablet 1, moles = 0.9826 x 0.03L = 0.029478moles
For tablet 2, moles = 0.9826 x 0.03L = 0.029478moles
Moles OH? used to titrate excess: ________________moles ________________moles
moles = molarity x volume in liters.
For tablet 1, moles = 1.003 x 0.01104 = 0.011 moles
For tablet 2, moles = 1.003 x 0.00902L = 9.05E-3 moles
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