Question

A white solid was left out after a class had tidied up their

Answer 1

Answer:

LiBr

Explanation:

Group 1 metals give a characteristic colour when subjected to flame test. The colour can tell us exactly what the identity of metal being studied.

Now, Lithium metal gives a red flame. Hence the group 1 metal ion is Li^+. Similarly, bromides give a creamy precipitate when reacted with silver nitrate.

This means that the solid substance under study is LiBr.