Prediction precipitation

Question

iron(II) iodide + cadmium acetate

 

sodium chloride + barium bromide

 

potassium hydroxide + iron(II) sulfate 

 

when combined, do each of these form a precipitate? 

Answer 1

iron(II) iodide + cadmium acetate - no precipitate

sodium chloride + barium bromide - no precipitate 

potassium hydroxide + iron(II) sulfate - a precipitate of iron(II) hydroxide will form