chemistry / help please

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For each reaction,which ion in the precipitate was responsible for the color

1-reaction of Sodium Hydroxide and Copper(II)Sulfate


2-reaction of Sodium Sulfate and Barium Chloride.

3-reaction of Sodium Hydroxide and Iron(III)Sulfate.


4-reaction of Sodium Hydroxide and Nickel(II)chloride.


5-reaction of Potassium Iodide and lead (II)Nitrate.

6-reaction of Sodium Hydroxide and Iron(II)Sulfate.

  • chemistry / help please -

    Cu, Ba, Fe, Ni, I, Fe

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