The turmeric solution will turn red by an aqueous solution of
(a)CH COOK
(b)CuSO4
(c)Na SO4
(d)FeCl3
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ch cook is solution of turmeric by the red aqueous solution
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The correct answer to the above question is (a), which is CH₃COOK.
- Turmeric solution gives reddish-brown colour in basic medium.
- From (a) we get, potassium acetate (CH3COOK) salt of a strong base and weak acid
- From (b) we get, copper sulphate (CuSO₄) salt of strong acid and weak base
- From (c) we get, sodium sulphate (Na₂SO₄) - salt of strong acid and strong base
- From (d) we get, Ferric chloride (FeCl₃ )-the salt of a weak base and strong acid
All the other compounds are weak bases in aqueous aolution. Only potassium acetate is a salt of a strong base and weak base. So turmeric solution will turn red by an aqueous solution of potassium acetate.
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