Which of the following reactions is the slowest at room temperature? a. Na(s)+ Cl(g)—> 2NaCl(s) b. C2H4O2(aq) + NaHCO3(s) —-> NaC2H3O2(aq)+ H2O(l)+ CO2(g) C. I2(aq) + 2S2O3^2- (aq)——- > 2I^- (aq) + S4O6^2- (aq) d. not enough data to determine

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