Which of these reactions can be classified as double replacement reactions?
Zn + 2HCl → ZnCl2 + H2
2NaCl + F2 → 2NaF + Cl2
2AlBr3 + 3K2SO4 → 6KBr + Al2(SO4)3
2K + MgBr2 → 2KBr + Mg
Zn + 2HCl → ZnCl2 + H2
2NaCl + F2 → 2NaF + Cl2
2AlBr3 + 3K2SO4 → 6KBr + Al2(SO4)3
2K + MgBr2 → 2KBr + Mg