Recent Lessons

Show all results for ""

Feature Overview

Ace your exams with our all-in-one platform for creating and sharing quizzes and tests.

Quizzes

Create quizzes and tests automatically from your content using AI.

Flashcards

Automatically turn your notes into digital flashcards.

Share, Export & Embed

Share with classmates or export to Excel and your learning management system.

Stats & Reporting

Auto-grading quizzes and tests with detailed stats and reports.

Mobile Apps

The smarter way to study – wherever you are.

Pricing Schools Business

Features Pricing Schools Business

16 Questions

0 Views

Acid and Base Titrations: MCQ2

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the purpose of washing the sides of the conical flask during the titration process?

To mix the solution thoroughly

To remove excess solute from the flask

To ensure accurate measurement of the solution (correct)

To prevent contamination of the solution

What is the purpose of using a stirring rod in step 3 of making a standard solution of anhydrous Na2CO3?

To ensure all the solute is dissolved (correct)

To mix the solution thoroughly

To remove excess water from the solution

To dissolve the solute faster

What is the characteristic of HNO3?

It is hydroscopic and non-volatile

It is volatile and hydroscopic (correct)

It is volatile and non-hydroscopic

It is non-volatile and non-hydroscopic

What is the purpose of adding DI water to the volumetric flask using a dropper in the making of a standard solution of anhydrous Na2CO3?

To ensure the meniscus rests on the graduation mark (A) Signup and view all the answers

What is the colour change observed when using Methyl Orange as an indicator in Exp 2?

Yellow to Peach Pink (A) Signup and view all the answers

Why is the bottled vinegar usually diluted?

To ensure accurate measurement of the acid (D) Signup and view all the answers

What is the purpose of taking into account the dilution factor in step 2 of solving vinegar titration questions?

To calculate the concentration of the original vinegar (A) Signup and view all the answers

What is the term for the amount of water absorbed by a substance from the air?

Hydroscopic (C) Signup and view all the answers

What is a characteristic of a primary standard?

It is a water-soluble substance that is stable and available in pure form (D) Signup and view all the answers

Why is the burette washed out with the solution it is to contain?

To prevent contamination (D) Signup and view all the answers

What is the purpose of opening the tap of the burette briefly?

To fill the part of the burette below the tap (B) Signup and view all the answers

Why is the pipette filled until the bottom of the meniscus rests on the graduation mark?

To measure the exact volume of the solution (D) Signup and view all the answers

What is the purpose of placing the tip of the pipette against the inside of the conical flask for about 3 seconds?

To allow the pipette to drain completely (D) Signup and view all the answers

Why is the conical flask washed out with DI water only?

To prevent contamination with the solution (B) Signup and view all the answers

What is the purpose of adding a few drops of indicator to the conical flask?

To indicate the endpoint of the titration (A) Signup and view all the answers

Why is a white tile placed under the conical flask?

To reflect the color of the indicator (B) Signup and view all the answers