Recent Lessons

Show all results for ""

Formation of a Precipitate in Chemical Reactions

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 characteristic feature of the chemical reaction between sulphuric acid and barium chloride solution?

Formation of a white precipitate of barium sulphate (correct)
Increase in temperature of the reaction
Change in color of the solution
Emission of hydrogen gas

When colourless solutions of lead nitrate and potassium iodide are mixed, what is formed?

A gas is produced
A yellow precipitate of lead iodide (correct)
A white precipitate of lead iodide
The color of the solution changes

What happens to the color of the potassium permanganate solution when it reacts with citric acid?

The color changes from purple to yellow
The color does not change
The color changes from purple to green
The color changes from purple to colourless (correct)

Which of the following is NOT a characteristic feature of a chemical reaction?

Increase in temperature of the reaction (D) Signup and view all the answers

What type of gas is produced in a chemical reaction?

Hydrogen gas (A) Signup and view all the answers

Which of the following is a characteristic feature of precipitation in a chemical reaction?

Formation of an insoluble product (B) Signup and view all the answers

Which gas is produced when zinc granules react with dilute sulphuric acid?

Hydrogen gas (C) Signup and view all the answers

What happens to the temperature during the reaction of zinc granules with dilute sulphuric acid?

The temperature increases (D) Signup and view all the answers

Which of the following gases is evolved when magnesium reacts with dilute hydrochloric acid or dilute sulphuric acid?

Hydrogen gas (C) Signup and view all the answers

What gas is produced when dilute hydrochloric acid is poured over sodium carbonate?

Carbon dioxide gas (A) Signup and view all the answers

Which of the following statements is true about the term 'precipitate'?

It is a solid formed during a chemical reaction that separates from the solution (B) Signup and view all the answers

In the reaction between zinc granules and dilute sulphuric acid, what is the purpose of using dilute acid instead of concentrated acid?

To control the rate of the reaction and prevent it from becoming too violent (D) Signup and view all the answers

Which of the following statements accurately describes the formation of a precipitate?

A precipitate is formed when two aqueous solutions react, and one of the products is insoluble in water. (B) Signup and view all the answers

Which of the following reactions involves the formation of a precipitate?

Reaction between potassium iodide and lead nitrate, producing a yellow precipitate of lead iodide. (A) Signup and view all the answers

What is the purpose of passing a gas into an aqueous solution during a chemical reaction?

To form a precipitate when the product is insoluble in the aqueous solution. (B) Signup and view all the answers

Which of the following reactions involves the formation of hydrogen gas?

Reaction between magnesium and a dilute acid, producing hydrogen gas. (A) Signup and view all the answers

Which gas is commonly used to form a precipitate when passed into an aqueous solution?