
What is the colour of methyl orange in acidic and basic medium respectively?
(A) Yellow, Red
(B) Red, Yellow
(C) Colourless, Red
(D) Colourless, Yellow
Answer
153k+ views
Hint: Methyl orange is an organic compound which is used as a laboratory agent. It is mostly used as a pH indicator frequently used in titrations due to its distinct colour and variance at different pH values.
Complete step by step answer: Methyl orange is a chemical compound having chemical formula .

Unlike a universal indicator, it does not show a full spectrum of colour change but does have a sharp endpoint.
- In a solution that is becoming less acidic in nature, methyl orange tends to change its colour from red to orange and finally to yellow. This entire colour change occurs in acidic conditions.
- Methyl orange shows a red colour when the pH of the solution is less than or equal to 3.1 and shows a yellow colour when the pH is above or equal to 4.4.
- As the changes occur in the of a mid-strength acid, methyl orange is usually used for the titration of acids.
Therefore, in the acidic medium, it is red in colour and in the basic medium, it is yellow in colour.
Hence, option (b) is the correct answer.
Note: Methyl orange is insoluble in diethyl ether, but its solubility in water is 0.5 g/100mL (20 degree Celsius). It is an orange solid in appearance and direct contact with methyl orange should be avoided.
Complete step by step answer: Methyl orange is a chemical compound having chemical formula

Unlike a universal indicator, it does not show a full spectrum of colour change but does have a sharp endpoint.
- In a solution that is becoming less acidic in nature, methyl orange tends to change its colour from red to orange and finally to yellow. This entire colour change occurs in acidic conditions.
- Methyl orange shows a red colour when the pH of the solution is less than or equal to 3.1 and shows a yellow colour when the pH is above or equal to 4.4.
- As the changes occur in the
Therefore, in the acidic medium, it is red in colour and in the basic medium, it is yellow in colour.
Hence, option (b) is the correct answer.
Note: Methyl orange is insoluble in diethyl ether, but its solubility in water is 0.5 g/100mL (20 degree Celsius). It is an orange solid in appearance and direct contact with methyl orange should be avoided.
Latest Vedantu courses for you
Grade 11 Science PCM | CBSE | SCHOOL | English
CBSE (2025-26)
School Full course for CBSE students
₹41,848 per year
EMI starts from ₹3,487.34 per month
Recently Updated Pages
JEE Main 2022 (June 29th Shift 2) Maths Question Paper with Answer Key

JEE Main 2023 (January 25th Shift 1) Maths Question Paper with Answer Key

JEE Main 2022 (July 29th Shift 1) Maths Question Paper with Answer Key

JEE Main 2022 (July 26th Shift 2) Chemistry Question Paper with Answer Key

JEE Main 2022 (June 26th Shift 2) Maths Question Paper with Answer Key

JEE Main 2022 (June 29th Shift 1) Physics Question Paper with Answer Key

Trending doubts
JEE Main 2025 Session 2: Application Form (Out), Exam Dates (Released), Eligibility, & More

JEE Main 2025: Derivation of Equation of Trajectory in Physics

Electric Field Due to Uniformly Charged Ring for JEE Main 2025 - Formula and Derivation

Degree of Dissociation and Its Formula With Solved Example for JEE

The stability of the following alkali metal chlorides class 11 chemistry JEE_Main

Displacement-Time Graph and Velocity-Time Graph for JEE

Other Pages
JEE Advanced Marks vs Ranks 2025: Understanding Category-wise Qualifying Marks and Previous Year Cut-offs

JEE Advanced 2025: Dates, Registration, Syllabus, Eligibility Criteria and More

JEE Advanced Weightage 2025 Chapter-Wise for Physics, Maths and Chemistry

NCERT Solutions for Class 11 Chemistry In Hindi Chapter 1 Some Basic Concepts of Chemistry

Thermodynamics Class 11 Notes: CBSE Chapter 5

Learn About Angle Of Deviation In Prism: JEE Main Physics 2025
