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pb no3 2 aq + na2so4 aq
pb no3 2 aq + na2co3 aq
pb no3 2 + na2s
nacl aq + pb no3 2 aq
na3po4 aq + pb no3 2 aq
na2s+pb no3 2
pb no3 2 aq + ki aq
na2so3 + pb no3 2
pb no3 2 aq + kl aq
na2so4 + pb no3 2
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