Chemical reactions part 2 go lions

What is the driving force in the following reaction?

Ni(NO₃)_{2 (aq)} + K₂S_(aq)-->NiS_(S) + 2 KNO_{3 (aq)}

• a gas is formed

• a precipitate is formed

• ionic compound are reactants

• ionic compounds are products

What is the balanced chemical equation for the reaction that takes place between bromine and sodium iodide?

• Br₂ +NaI ->NaBr₂ + I

• Br₂ +2NaI ->2NaBr + I₂

• Br₂ +NaI ->2NaBr + I₂

• Br₂ +2NaI ->2NaBr + I

The equation 2C₃H₇OH + 9O₂--> 6CO₂ + 8 H₂O is an example of which type of reaction?

• combustion

• single replacement

• double replacement

• decomposition

The equation H₃PO₄ + 3 KOH -->K₃PO₄ + 3 H₂O is an example of which type of reaction?

• combustion

• double replacement

• single replacement

• decomposition

The equation Mg(s) + 2 HCl (aq) --> MgCl₂ (aq) + H2 (g) is an example of which type of reaction?

• combustion

• double replacement

• single replacement

• combination

The reaction 2Fe + 3Cl₂ --> 2FeCl₃ is an example of which type of reaction?

• combination

• combustion

• single replacement

• decomposition

Which of the following is the correctly balanced equation for the incomplete combustion of heptane, C₇H₁₄

• C₇H₁₄ + 14 O_--> 7 CO + 7 H₂O

• C₇H₁₄ + 7 O_2--> 7 CO + 7 H₂O

• C₇H₁₄ + 21 O_2--> 14CO₂ + 14 H₂O

• C₇H₁₄ + O_2--> C₇O₂ + 7 H₂

The complete combustion of which of the following substances produces carbon dioxide and water?

• C₈H₁₈

• K₂CO₃

• NO

• CaHCO₃

A double replacement reaction takes place when aqueous Na₂CO₃ reacts with aquesous Sn(NO₃)₂. You would expect one of the products of this reaction to be

• NaNO₃

• NaSn

• Sn(CO₃)₂

• CNO₃

Use the activity series of metals to complete a balance chemical equation for the following single replacement reaction Ag + KNO₃ -->

• AgNO₃ + K

• Ag + KNO₃

• AgK + NO₃

• no reaction takes place because silver is less reactive than potassium