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antacid analysis Flashcards | StudBud
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antacid analysis
antacid analysis
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Questions
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Answers
1
What does bromophenol blue indicate in this lab?
Type of antacid used
Temperature
CO₂ levels
When the reaction is done
2
What is the maximum amount of antacid you should use in the flask?
0.5 grams
0.2 grams
1 gram
2 grams
3
What is added to the antacid sample before titrating with NaOH?
Hydrochloric acid
Water
Lemon juice
Vinegar
4
What is the role of NaOH in this experiment?
It makes the antacid dissolve
It reacts with leftover HCl
It's the acid
It cleans the flask
5
What form(s) can antacids be used in this lab?
Powder
Tablet
Tablet or Liquid
Liquid
6
Why is the antacid sample boiled after adding HCl?
To sterilize it
To evaporate the HCl
To remove dissolved CO₂
To make it dissolve faster
7
Why is it important to avoid air bubbles in the buret tip?
They help with the reaction
They can cause inaccurate volume readings
They indicate the solution is too concentrated
They speed up the titration process
8
What kind of solution is NaOH in this experiment?
Standardized base
Indicator
Buffer
Analyte
9
What equipment is used to deliver the NaOH titrant drop by drop?
Graduated cylinder
Beaker
Buret
Test tube
10
What is the purpose of back titration in this experiment?
To remove the antacid
To boil off the water
To determine how much acid the antacid neutralized
To color the solution
11
What color does bromophenol blue turn at the endpoint?
Green
Faint Blue
Yellow
Red
12
What must be done to the antacid tablet before analysis?
Soak it in water overnight
Freeze it
Boil it
Grind it into powder
