How will you distinguish between an acid and a base by using methyl orange ?
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In a solution becoming less acidic, methyl orange moves from red to orange and finally to yellow with the reverse occurring for a solution increasing in acidity. The entire color change occurs in acidic conditions. In an acid, it is reddish and in alkali, it is yellow.
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Methyl orange shows red color in acidic medium and yellow color in basic medium. Because it changes color at the pKaof a mid strength acid, it is usually used in titration for acids. Unlike a universal indicator, methyl orange does not have a full spectrum of color change, but it has a sharp end point..
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