185k views
3 votes
1. Which of the following is a single replacement reaction? CaO + H2O yields Ca(OH)2 Mg + 2HNO3 yields Mg(NO3)2 + H2 NaOH + HCl yields H2O + NaCl CH4 + 2O2 yields CO2 + 2H2O

User Tmslnz
by
8.1k points

1 Answer

1 vote

The single replacement reaction is

Mg + 2 HNO₃ → Mg(NO₃)₂ +H₂

Step-by-step explanation

  • Single replacement reaction is type of chemical reaction in which element react with compound and take the place of another element in that compound.
  • The reaction above is a single replacement because Mg ( an element) react with HNO₃( a compound) and Mg replaces H from HNO₃ to Mg(NO₃)₂ and H₂
User Chadpeppers
by
8.4k points