Which reaction is a single replacement reaction?
2H2 + O2 → 2H2O
2H2O2 → 2H2O + O2
KOH + HCl → KCl + H2O
Cu + 2AgNO3 → 2Ag + Cu(NO3)2
2H2 + O2 → 2H2O
2H2O2 → 2H2O + O2
KOH + HCl → KCl + H2O
Cu + 2AgNO3 → 2Ag + Cu(NO3)2