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+1 vote
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in Chemistry by (106k points)
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An alkali is titrated against an acid with methyl orange as indicator, which of the following is a correct combination?

Base  Acid End point
(1) Strong  Strong Pinkish red to yellow
(2) Weak  Strong Yellow to pinkish red
(3) Strong Strong Pink to colourless 
(4) Weak  Strong Colourless to pink

1 Answer

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Best answer

Answer: (2)

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).

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