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Which of the following is not a precipitate in lime-soda process?

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in Engineering Chemistry II by (789k points)
Which of the following is not a precipitate in lime-soda process?

(a) CaCO3

(b) Fe(OH) 3

(c) Al(OH) 3

(d) Al2(SO4)3

I got this question in unit test.

Question is taken from Lime Soda Process in section Water and its Treatment of Engineering Chemistry II

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Correct answer is (d) Al2(SO4)3

For explanation: Al2(SO4)3 is not a precipitate in lime-soda process. All the other options are the precipitate in lime-soda process.

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