Quantitative Estimation and Titration Quiz

What is the first step in preparing for quantitative estimation?

• Filling the burette with HCl

• Taring the balance

• Weighing the conical flask

• Adding methyl orange

How much sodium carbonate is weighed for the solution preparation?

• 2.65g

• 5.00g

• 1.50g

• 3.25g

What is used to ensure the sodium carbonate is fully dissolved in the beaker?

• A burette

• A funnel

• A glass rod

• A pipette

What is the purpose of rinsing the burette with hydrochloric acid before filling it?

• To clean the burette

• To ensure accurate measurement

• To remove air bubbles

• To prevent contamination

What is the initial reading set on the burette before starting the titration?

• 10ml

• 5ml

• 20ml

• 0ml

What is the volume of sodium carbonate solution pipetted into the conical flask?

• 10ml

• 25ml

• 15ml

• 20ml

What indicator is added to the sodium carbonate solution before titration?

• Bromothymol blue

• Methyl orange

• Litmus

• Phenolphthalein

What color change indicates the end point of the titration?

• Blue to green

• Yellow to light red

• Red to yellow

• Yellow to blue

What should be done if the titration results are not consistent?

• Change the indicator

• Repeat the titration

• Use a different acid

• Adjust the pipette volume

What is the purpose of placing the conical flask on a white tile during titration?

• To enhance visibility of color change

• To stabilize the flask

• To measure the temperature

• To prevent spills