Write the reaction equation: Co – CoO – CoCl2 – Co (OH) 2 – CoC – Co
| May 5, 2021 | education
1. Combustion of cobalt at a temperature of 940 ° C.
2Co + O2 = 2CoO.
2. Cobalt oxide is soluble in hydrochloric acid.
CoO + 2HCl = CoCl2 + H2O.
3. Cobalt chloride with dilute alkali forms hydroxide.
CoCl2 + 2NaOH = Co (OH) 2 + 2NaCl.
4. Thermal decomposition, 200 ° C.
Co (OH) 2 = CoO + H2O.
5. Reduction with hydrogen, 120 – 500 ° C.
CoO + H2 = Co + H2O.
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