Question: what happens when (nh4)2cr2o7 is heated?
Answer: Description: A small amount of orange (NH4)2Cr2O7 is ignited and decomposes in a vigorous exothermic reaction. This “volcanic” reaction produces sparks, a large volume of green chromium (lll) oxide, steam and nitrogen gas. Procedure: For large lecture halls, project demonstration using a document camera.