What color does sodium nitrate burn?

In a flame test , the sodium ion will produce a bright yellow flame. The nitrate ion does not produce a colour.

Dissolve sodium nitrate in water. Then using a ni-chrome wire, clean it in hydrochloric acid, dip the clean wire intoi the solution. Then pass the wire through a bunsen flame. The pale blue flame, will become bright yellow.

Different metal ions produce different flame colours.

Lithium = red

Potassium = lilac

Copper = Blue/green