Question R3 Q16 - NSB Round Robin 2009

In addition to the “sniff test”, which of the following is a standard laboratory test for a sulfide, such as hydrogen sulfide gas:

W) the gas passed over a filter paper soaked in colorless lead nitrate turns the paper brown

X) when inserted into a flame, a glowing wooden splint bursts into flames

Y) a flame test gives off a deep purple color

Z) paper chromatography

Science Bowl Question