A sample consists of one or more of the following salts: BaCl2, Li2CO3, NaNO3. The sample dissolves completely in water and when dilute HCl is added to this solution, effervescence is seen.
1) Which compounds MUST be present? Explain why.
Write the formulae and present your evidence.
2) Which compounds MUST be absent? Explain why.
Write the formulae and present your evidence.
3) Which compounds are INDETERMINATE - unable to determine if present or absent.
Write the formulae.