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WorksheetsTA - MODUL VI (23/04/2022)
Total questions: 11
Worksheet time: 17mins
What is the definition of acidimetri ?
The process of measuring the amount of base in a solution, with a acid standard solution by titration.
The process of measuring the amount of acid in a solution, with a basic standard solution by titration.
The process of measuring the amount of acid in a solution, with a basic standard solution by gravimetry.
The process of measuring the amount of acid in a solution, with a basic standard solution by dillution.
What is the meaning of standard solution ?
a standart is a solution containing a precisely known concentration of an element or a substance.
a standart is a solution containing a precisely known concentration of an element or a substance by titration.
a standart is a solution containing a unprecisely known concentration of an element or a substance.
a standart is a solution containing a precisely known concentration of an element or a substance by dillution.
A 15 ml solution of 0.8 M HCl is titrated until neutralized into a 70 ml sample of NaOH. What was the concentration of the NaOH
0.14 M
0.15 M
0.16 M
0.17 M
Titration reveals that 11.6 mL of 3.0 M sulfuric acid are required to neutralize the sodium hydroxide in 25.00 mL of NaOH solution. What is the molarity of the NaOH solution
2.8 M
2.9 M
3 M
3.1 M
How much the volume in this burette ?
0.10 mL
0.11 mL
0.12 mL
0.13 mL
From the primary standard solution below,which one the primary standard solution for acid-alkalimetric titration ?
Potassium Dichromate
Sodium Thiosulphate
Potassium Hydrogenphtalate
Sodium Metabisulfite
What is the requirement for primary standard solution ?
The substance should be unaltered in air during weighing.
The substance should be hygroscopic.
The substance should be hard to obtain.
The substance should have less molecular weight.
How to make Methyl Orange indicator ?
Dissolve 0.1 gr of Methyl Orange in 100mL of distilled water.
Dissolve 0.1 gr of Methyl Orange in 100mL of ethanol.
Dissolve 0.5 gr of Methyl Orange in 100mL of distilled water.
Dissolve 0.5 gr of Methyl Orange in 100mL of ethanol.
How to make Phenolphtalein indicator ?
Dissolve 1 gr of Phenolphtalein in 40mL 2-ethoxyethanol and dillute to 100mL with distillate water.
Dissolve 1 gr of Phenolphtalein in 40mL 1-ethoxyethanol and dillute to 100mL with distillate water.
Dissolve 1 gr of Phenolphtalein in 60mL 2-ethoxyethanol and dillute to 100mL with distillate water.
Dissolve 1 gr of Phenolphtalein in 60mL 1-ethoxyethanol and dillute to 100mL with distillate water.
How to make Sodium Tetraborate Pentahydrate 2.5N 250ml
0.3641 gr
1.3641 gr
0.7282 gr
1.7282 gr
What is the requirement for secondary standard solution ?
The degree of it purity is lower than the primary standard solution
It has a low equivalent weight to minimize weighing errors
The solution isn't stable in the storage
Ongoing reactions with reagents must be stoichiometric active and direct
