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Which one of the following contains correct? Select one: O a. 2H2O(l) + O2(g) + 4H+ (aq) + 4e redox reaction O b. NH3(g) +

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Which one of the following contains correct? Select one: O a. 2H2O(l) + O2(g) + 4H+ (aq) + 4e redox reaction O b. NH3(g) + HCl(g) NH4Cl(s) precipitation reaction redox reaction O c. Cr2O72-(aq) + 20H-(aq) 2C1042-(aq) + H2O(1) O d. NH3(aq) + HCl(aq) NH_Cl(aq) neutralization reaction e. CH_(g) + 202(g) CO2(g) + 2H2O(g) redox reaction

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