Double

This pictures simulates what type of reaction?

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

Tags

NGSS.MS-PS1-2

Mark the indicators of a double displacement reaction.

• Water is formed

• gas is formed

• a precipitate is formed

• a phase change occurs

• none of these are correct

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

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)

Barium chloride on reacting with ammonium sulphate forms barium sulphate and ammonium chloride. Which of the following correctly represents the type of the reaction involved?

• (i) Displacement reaction

• (ii) Precipitation reaction

• (iii) Combination reaction

• (iv) Double displacement reaction

What is the word equation for this double displacement reaction?
d) ​ AgNO₃(aq) + ​K₃PO₄(aq) → Ag₃PO₄(s) + KNO₃(aq)

• silver nitrate + potassium phosphate -> silver phosphate + potassium nitrate

• silver nitrogen oxygen + potassium phosphate -> silver phosphate + potassium nitrogen oxygen

• silver nitrogen + potassium phosphate -> silver phosphate + potassium nitrogen

• silver nitrate + potassium phosphorus -> silver phosphorus + potassium nitrate

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Identify which unbalanced chemical equation below is a double displacement reaction.

• Ca(NO₃)₂(aq) + NaOH(aq) -> Ca(OH)₂(s) + NaNO₃(aq)

• K(s) + H₂O(l) -> KOH(aq) + H₂

• H₂O(l) -> H₂(g) + O₂(g)

• NaHCO₃(s) -> NaO(s) + CO₂(g)

Which of the following reactions is a double displacement reaction?

• @@ ext{NaCl} + ext{AgNO}_3 ightarrow ext{NaNO}_3 + ext{AgCl}@@

• @@ ext{H}_2 + ext{O}_2 ightarrow ext{H}_2 ext{O}@@

• @@ ext{C} + ext{O}_2 ightarrow ext{CO}_2@@

• @@ ext{Fe} + ext{S} ightarrow ext{FeS}@@

What is a characteristic of a double displacement reaction?

• Formation of a precipitate

• Release of gas

• Absorption of heat

• Emission of light