Titration and Acid Preparation

This video tutorial from Microgames Experiments guides viewers through the preparation and standardization of a 0.1 normal hydrochloric acid solution. It covers the necessary materials, the preparation of a phenolphthalein indicator, and the step-by-step process of creating and standardizing the acid solution. The video also explains the titration procedure, how to identify the endpoint, and the calculation of the solution's actual normality. The tutorial concludes with a summary and correction of the flask label.

What is the first step in the preparation and standardization of 0.1 normal hydrochloric acid solution?

• Labeling the volumetric flask

• Calculation of normality

• Titration of the prepared solution

• Preparation of the phenolphthalein indicator

Which apparatus is NOT mentioned as necessary for the preparation and standardization process?

• Pipette with filler

• Thermometer

• Conical flask

• Burette

How much phenolphthalein powder is used to prepare the indicator solution?

• 1 gram

• 3 grams

• 4 grams

• 2 grams

What is the initial volume of distilled water added to the volumetric flask for preparing the hydrochloric acid solution?

• 60 ml

• 70 ml

• 50 ml

• 80 ml

What is the volume of concentrated hydrochloric acid added to the volumetric flask?

• 1.00 ml

• 0.83 ml

• 1.50 ml

• 1.25 ml

During the standardization process, what indicates the end point of the titration?

• A blue color

• A faint pink color

• A clear solution

• A yellow color

What is the initial volume of the prepared hydrochloric acid solution used in the titration?

• 20 ml

• 15 ml

• 25 ml

• 10 ml

What is the final buret reading used to calculate the volume of sodium hydroxide solution?

• 18.5 ml

• 19.0 ml

• 20.0 ml

• 19.5 ml

What is the calculated actual normality of the prepared hydrochloric acid solution?

• 0.095

• 0.098

• 0.096

• 0.097

What is the final step after calculating the actual normality of the hydrochloric acid solution?

• Adding more indicator

• Re-titration

• Heating the solution

• Correcting the label of the flask