JEE Main | 2018Ionic EquilibriumHard

Question

An alkali is titrated against an acid with methyl orange as indicator, which of the following is a correct combination ?

Options

A.

Base →Strong
Acid → Strong 
End point → Pinkish red to yellow

B.

Base →Weak
Acid → Strong 
End point → Yellow to pinkish red

C.

Base →Strong
Acid → Strong 
End point → Pink to colourless

D.

Base →Weak
Acid → Strong 
End point → Colourless to pink

Solution

Methyl orange shows Red(pinkish) color in 
Acidic medium & yellow color in basic
medium since original solution is basic so 
initial color ⇒ yellow
& Titrated with acid so
Final color ⇒ pinkish (red)

Create a free account to view solution

View Solution Free
Topic: Ionic Equilibrium·Practice all Ionic Equilibrium questions

More Ionic Equilibrium Questions

20 mL of a weak monobasic acid (HA) requires 20 mL 0.2 M NaOH for complete titration. If pH of solution upon addition of...The pH of solution containing 0.10 M sodium acetate and 0.03 M acetic acid is(pKa for CH3COOH = 4.57)...Which statement is/are correct:...Which of the following is most soluble in water:...The solubility product of AgCl is 10-10. The minimum volume (in L) of water required to dissolve 1.722 mg of AgCl is (mo...