The yellow precipitate formed in the reaction between KI and Pb(NO3)2 is . b. The white precipitate formed in the reaction between BaCl2 and H2SO4 is . c. The brown precipitate formed in the reaction between NaOH and FeCl3 is . d. The blue precipitate formed in the reaction between CuSO4 and NaOH is

a. Here, the yellow precipitate is lead (II) iodide:

b. Here the white precipitate is barium sulfate:

c. Here the brown precipitate is iron (III) hydroxide:

d. Here, the precipitate is copper (II) hydroxide:

Explanation:

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In this case, since the precipitation reactions are characterized by the formation of a product which is highly insoluble in water, specially very heavy products having heavy metals at the cations, for each case we proceed as follows:

a. Here, the yellow precipitate is lead (II) iodide:

b. Here the white precipitate is barium sulfate:

c. Here the brown precipitate is iron (III) hydroxide:

d. Here, the precipitate is copper (II) hydroxide:

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