Reaction between chromium(III) oxide and oxygen in the presence of sodium carbonate |
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| Authors: | M. N. Sastri J. O. Hill |
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| Affiliation: | 1. Department of Chemistry, Andhra University, Visakhapatnam, India
2. Department of Inorganic and Analytical Chemistry, La Trobe University, 3083, Bundoora, Victoria, Australia
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| Abstract: | The large scale manufacture of sodium chromate is carried out by heating finely ground chromite ore mixed with sodium carbonate and lime in air. The essential reaction leading to the formation of sodium chromate is $$2Cr_2 O_3 + 4 Na_2 CO_3 + 3 O_2 xrightarrow{{Delta {rm H}_{R^0 } }}4Na_2 CrO_4 + CO_2 $$ |
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