JEE Main On 08 April 2018 Question 5
Question: An alkali is titrated against an acid with methyl orange as indicator, which of the following is a correct combination? [JEE Main Online 08-04-2018]
Options:
A) Base Acid End point Weak Strong Yellow to pinkish red
B) Base Acid End point Strong Strong Pink to colourless
C) Base Acid End point Weak Strong Colourless to pink
D) Base Acid End point Strong Strong Pinkish red to yellow
Show Answer
Answer:
Correct Answer: A
Solution:
- Acid added in alkali so colour of methyl orange changes from yellow to pinkish red. Working $ pH $ range of $ MeOH\to 3\text{.1 to 4}\text{.3} $
