ICSE Class 10 Answered
What is an orange crystal which gives out red sparks
Asked by dhritichandan1 | 23 Dec, 2018, 04:49: PM
Expert Answer
Ammonium dichromate (NH4)2Cr2O7 decomposes, it gives off orane spark and produce green chromium(III) oxide Cr2O3 nitrogen gas and water vapours. This decomposition of Ammonium dichromate is looks like a miniature volcanic eruption. the reaction occurs as follows:
(NH4)2Cr2O7(s) + heat → Cr2O3(s) + N2(g) + 4H2O(g)
Answered by Ramandeep | 25 Dec, 2018, 07:04: PM
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