Question 32
A substance X, which is an oxide of a group 2 element, is used intensively in the cement industry. This element is present in bones also. On treatment with water, it forms a solution which turns red litmus blue. Identify X and also write the chemical reactions involved.

Open in App

Solution

X is calcium oxide. The reaction involved is:

$CaO(s) + H_{2} O(l) \to {Ca(OH)}_{2} (aq)$

Suggest Corrections

Similar questions

Q. Question 32
A substance X, which is an oxide of a group 2 element, is used intensively in the cement industry. This element is present in bones also. On treatment with water, it forms a solution which turns red litmus blue. Identify X and also write the chemical reactions involved.

Q. A substance

X

which is an oxide of a group element is used intensively in the cement industry. This element is also present in bones. On treatment with water, it forms a solution which turns red litmus blue. What is

X

Question 53
An element A reacts with water to form a compound B which is used in whitewashing. The compound B on heating forms an oxide C which on treatment with water gives back B. Identify A, B and C and give the reactions involved.

Q. An element X that react with oxygen and form an oxide

X_{2} O

. This oxide dissolves in water and turns red litmus blue. Element

X

is :

An element X on reacting with oxygen forms an oxide X₂O. This oxide dissolves in water and turns red litmus blue. State whether element X is a metal or a non metal. Explain with proper example.

Join BYJU'S Learning Program

Explore more

Step-By-Step Chemical Formula Writing

Standard VIII Chemistry

Join BYJU'S Learning Program

Question 32 A substance X, which is an oxide of a group 2 element, is used intensively in the cement industry. This element is present in bones also. On treatment with water, it forms a solution which turns red litmus blue. Identify X and also write the chemical reactions involved.

X is calcium oxide. The reaction involved is: CaO(s)+H2O(l)→Ca(OH)2(aq)

Question 32
A substance X, which is an oxide of a group 2 element, is used intensively in the cement industry. This element is present in bones also. On treatment with water, it forms a solution which turns red litmus blue. Identify X and also write the chemical reactions involved.

X is calcium oxide. The reaction involved is:

$CaO(s) + H_{2} O(l) \to {Ca(OH)}_{2} (aq)$