REDOXREDOX Two of the following equations are Redox reactions. Check which ones? 1 ) 2H2 (g) + O2 (g) â 2H2O (1) 2) NaCI (aq) + H,O ()- HCI (aq)+ NaOH (aq) 3) NH, (g) + HBr (aq) â NH,Br (aq) 4) Ca (s) + 2 H,O (0)-Ca(OH)2 (aq) + 2 H2 (9) 5) BaCl2+ 2K(OH) â 2 KCl + Ba(OH)2 Select one: 0 a, 1 and 3 ) b, 3 and 5 O c. 1 and 4 O d. 2 and 4 O e. 2 and 5