One way to remove lead ion from water is to add a source of iodide ion so that lead iodide will precipitate out of solution: Pb2+(aq) + 2I−(aq) → PbI2(s)

(a) What volume of a 1.0 M KI solution must be added to 120.0 mL of a solution that is 0.23 M in Pb2+ ion to precipitate all the lead ion?

L I−

(b) What mass of PbI2 should precipitate?

g PbI2

(Please show how to work it out step by step)

Which term refers to a property that depends only on the amount of a substance? ©@

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Balance and in which category does it fit in? single or double displacement or synthesis or decomposition? (a) k2 o → k + o2 (b) na + i2 → nai (c) cu(no3 )2 + naoh → cu(oh)2 + nano3 (d) kclo3 → kcl + o2 (e) ca(no3 )2 + hbr → cabr2 + hno3 (f) sn(oh)2 → sno + h2 o (g) p4 + n2 o → p4 o6 + n2 (h) fe + al2 (so4 )3 → feso4 + al (i) alcl3 + na2 co3 → al2 (co3 )3 + nacl (j) c3 h6 + o2 → co2 + h2 o