A Level Chemistry 9701/13/O/N/19 Q15

Question

Solutions P and Q each contain a different Group 2 ion at the same concentration. One contains Mg2+, the other contains Ba2+. Tests are carried out on separate 5 cm3 samples of P and Q.
test 1: add 1cm3 of 0.1 mol dm–3 Na2SO4(aq)
test 2: add 1cm3 of 0.1 mol dm–3 NaOH(aq)

What are the results of these tests?

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    2021-06-26T16:47:38+08:00

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