Transcribed Image Text: 2+ 2+ 2+ A student performing ts lab experiment receives s unknown solution that may contain ( Ba,

Excerpt
resulting solution from step 2, was treated with ammonia and of Na,HPO, A wte precipitate was formed after heating the solution for 10 minutes at 60°C. Wch cations were present in the student’s unknown solution? Select one or more: 2+ Ca 2+ Mg 2+ Ва

Transcribed Image Text: 2+
2+
2+
A student performing ts lab experiment receives s unknown solution that may contain ( Ba, Ca
and Mg). And begins to
conduct tests to identify the cations present in the unknown solution. Based on the following observation
1) When the unknown solution was treated with K,Cro,, yellow precipitate was formed.
2) The resulting solution from step 1 was basified with 6M NH, before the addition of aqueous K,C,0, wch forms a
wte precipitate.
3) To the resulting solution from step 2, was treated with ammonia and of Na,HPO, A wte precipitate was formed after heating
the solution for 10 minutes at 60°C.
Wch cations were present in the student’s unknown solution?
Select one or more:
2+
Ca
2+
Mg
2+
Ва

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