Rashid has performed titrimetric analysis of antacid tablets which solely contain aluminum hydroxide [Al(OH)3, 78.0 g/mol]. For the sample preparation, he powdered an antacid tablet, dissolved it in 100 mL pre-boiled distilled water, and equally divided the mixture into two Erlenmeyer flasks. Then, he titrated each flask up to the faint pink end point with HCl titrant. Initially, he determined the concentration of the HCl titrant by titrating 10.0 mL of HCl solution with 0.0998M NaOH in duplicate. Consider the data presented in the table below and answer the succeeding questions. Volume of titrant, mL Standardization (0.0998M NaOH) 25.0 25.1 Titration of sample (x M HCl) 38.5 38.4 What is the concentration of the HCl titrant in Molar? What is the sum of all the coefficients of the balanced chemical equation in titrating the antacid sample? How many milligrams of Al(OH)3 does a tablet contain? (Hint: Consider that the sample was divided into two)
Rashid has performed titrimetric analysis of antacid tablets which solely contain aluminum hydroxide [Al(OH)3, 78.0 g/mol]. For the sample preparation, he powdered an antacid tablet, dissolved it in 100 mL pre-boiled distilled water, and equally divided the mixture into two Erlenmeyer flasks. Then, he titrated each flask up to the faint pink end point with HCl titrant. Initially, he determined the concentration of the HCl titrant by titrating 10.0 mL of HCl solution with 0.0998M NaOH in duplicate. Consider the data presented in the table below and answer the succeeding questions.
|
|
Volume of titrant, mL |
|
|
Standardization (0.0998M NaOH) |
25.0 |
25.1 |
|
Titration of sample (x M HCl) |
38.5 |
38.4
|
What is the concentration of the HCl titrant in Molar?
What is the sum of all the coefficients of the balanced chemical equation in titrating the antacid sample?
How many milligrams of Al(OH)3 does a tablet contain? (Hint: Consider that the sample was divided into two)
Can a tablet be sufficient in neutralizing a 100. mL of stomach acid with a pH of 1.50? Hint: H+ concentration is antilog(-pH).
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