Available tests: 1: Solubility in water 2: pH 3: AgNO3 (aq) 4: PbNO3 (aq) 5: BaC

Question

Available tests: 1: Solubility in water 2: pH 3: AgNO3 (aq) 4: PbNO3 (aq) 5: BaCl2 (aq) 6: 1M HCl (aq) 7: 1M NaOH (aq) 8: Iodine 9: Acetic acid (aq) 10: Flame test Complete the required portions of the table in blue, and any number of additional experiments in yellow, by selecting the corresponding active ingredient for the following household products from set A and match the corresponding result for each selected test. Before coming to lab: Download and print table. Fill in with the experiments you will be performing and expected results for that test. Some references include your lab manual, solubility rules, Merck Index or CRC Handbook (available in the Resource Centre)

Explanation / Answer

a)

PbNO3 = Pb+2 and NO3-

from your data:

KCl = K+ + Cl-, so Pb+2 + Cl- precipitates

Sugar = will not preciptiate with lead

Salt Petre = KNO3, will not preciptiate with lead

vitamin C = will not form lead precipiotate with lead

cornstarch = not even soluble, therefore can't preciptate with lead

Tums = CO3-2 content so expect:

CO3-2 + Pb+2 = PbCO3(s) white precipitate

Q2)

For BaCl:

similar:

KCl = no precipitate

Sugar = no precipitate

Salt ¨Peter = KNO3 + BaCl2 = no precipitate

vitamin C = no precipitate

Cornstarch = no precipitate

only CO3-2 from CaCO3 will form:

Ba+2 + CO3-2 = BaCO3(s)

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