April 2019 0 44 Report
W którym z podanych niżej równań reakcji tlen spełnia rolę reduktora?
A. 2Na + 2H2O → 2NaOH + H2
B. CaO + H2O → Ca(OH)2
C. 2F2 + 2H2O → 4HF + O2
D. SO2 + H2O → H2SO3
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