Types of reaction

Which equation is a double displacement reaction?

• Cl₂ + 2KI --> 2KCl

• Fe + O₂ --> Fe₂O₃

• CaCO₃ --> CO₂ + CaO

• CaCO₃ + 2HCl --> CaCl₂ + H₂CO₃

AB + CD →AD + CB

• Double Replacement
• Single Replacement
• Synthesis
• Decomposition

2 AgNO₃ + Cu --> Cu(NO₃)₂ + 2 Ag 

• single displacement
• double displacement
• decomposition
• synthesis

A + BC →B + AC

• Single Replacement
• Decomposition
• Double Replacement
• Synthesis

Based on the activity series, will this reaction occur?

Au (s) + HCl (aq) →

• Yes

• No

Which metal is more reactive than calcium?

• magnesium

• potassium

• silver

• aluminum

A displacement (single replacement) reaction will occur when...

• a more reactive metal displaces a less reactive metal from its compound.
• A less reactive metal displaces a more reactive metal from its compound
• Displacement only occurs when two of the same metals are reacted 
• Displacement reactions will only occur in metals above iron in the reactivity series

Which among the following is(are) double displacement

reaction(s)?

(i) Pb + CuCl₂ --> PbCl₂ + Cu

(ii) Na₂SO₄ + BaCl₂ --> BaSO₄ + 2NaCl

(iii) C + O₂ --> CO₂

(iv) CH₄ + 2O₂ --> CO₂ + 2H₂O

• (a) (i) and (iv)

• (b) (ii) only

• (c) (i) and (ii)

• (d) (iii) and (iv)

Which equation is a double displacement reaction?

• Cl₂ + 2KI --> 2KCl

• Fe + O₂ --> Fe₂O₃

• CaCO₃ --> CO₂ + CaO

• CaCO₃ + 2HCl --> CaCl₂ + H₂CO₃

one of the elements of the reactant is replaced by the element-reactant to form a new compound and an element. is called as .............

• single displacement reaction

• double displacement reaction

• multidisplacement reaction

• triple displcaement reaction