Answer
(a) 2KClO$_{3}$ (s) → 2KCl(s) + 3 O$_{2}$ (g)
decomposition
(b) V$_{2}$O$_{5}$ (s) + 5Ca(l) → 2V(l) + 5CaO(s)
single replacement
(c) 2NaCl(s) + H$_{2}$SO$_{4}$(l) → 2HCl(g) + Na$_{2}$SO$_{4}$(s)
double-replacement
(d) Fe(s) + 2HBr(aq) → FeBr$_{2}$(aq) + H$_{2}$(g)
single-replacement
Work Step by Step
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