Complete the following chemical reactions :
(a)
(b)
(c)
(a) MnO2 + 4HCl MnCl2 + Cl2 + 2H2O
(b) XeF6 + KF K+[XeF7]-
(c) 4I- (aq.) + 4H+ (aq.) + O2(g) 2I2(s) + 2H2O (l)
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