Are you ready to take this lesson's quiz? These questions will help you find out. Make sure you understand why each correct answer is correct—if you don't, review that part of the lesson.
What is the balanced chemical equation for the reaction of sodium sulfate and strontium chloride aqueous solutions?
- \(\text{Na}_{2}\text{SO}_{4\text{(aq)}} + \text{SrCl}_{2\text{(aq)}} → 2 \text{NaCl}_{(aq)} + \text{SrSO}_{4\text{(s)}}\)
- \(\text{Na}_{2}\text{SO}_{4\text{(aq)}} + \text{SrCl}_{2\text{(aq)}} → \text{NaCl}_{(aq)} + \text{SrSO}_{4\text{(s)}}\)
- \(\text{Na}_{2}\text{SO}_{4\text{(aq)}} + \text{SrCl}_{2\text{(aq)}} → \text{NaSr}_{(aq)} + \text{ClSO}_{4\text{(aq)}}\)
- \(\text{NaSO}_{4\text{(aq)}} + \text{SrCl}_{(\text{aq})} → \text{NaCl}_{(\text{aq})} + \text{SrSO}_{4\text{(s)}}\)
In double replacement reactions, the cations switch places. This equation is also balanced to satisfy the law of conservation of mass.
In double replacement reactions, the cations switch places. This equation is not balanced.
In double replacement reactions, the cations switch places because they have the same charge. Ionic compounds must be comprised of a cation and anion pair.
Identify the charges that sodium, sulfate, strontium, and chlorine form when they become ions. Then, criss-cross their charges to get the formula for the compound.
Use this activity series to determine which metal is more reactive than magnesium.
| Potassium \((\text{K})\) | Most Reactive |
| Sodium \(\text{(Na)}\) |
|
| Calcium \(\text{(Ca)}\) | |
| Magnesium \(\text{(Mg)}\) | |
| Aluminum \(\text{(Al)}\) | |
| Carbon \(\text{(C)}\) | |
| Zinc \(\text{(Zn)}\) | |
| Iron \(\text{(Fe)}\) | |
| Tin \(\text{(Sn)}\) | |
| Lead \(\text{(Pb)}\) | |
| Hydrogen \(\text{(H)}\) | |
| Copper \(\text{(Cu)}\) | |
| Silver \(\text{(Ag)}\) | |
| Gold \(\text{(Au)}\) | Least Reactive |
- copper
- hydrogen
- zinc
- potassium
Since copper is below magnesium on the activity series, it is not capable of replacing magnesium in a single replacement reaction.
Since hydrogen is below magnesium on the activity series, it is not capable of replacing magnesium in a single replacement reaction.
Since zinc is below magnesium on the activity series, it is not capable of replacing magnesium in a single replacement reaction.
Potassium is above magnesium on the activity series and can replace magnesium in a single replacement reaction.
Which type of reaction is shown by this equation?
- combustion
- synthesis
- decomposition
- single replacement
Reactions between a hydrocarbon and oxygen always result in combustion.
Reactions that combine two or more reactants to produce one product are synthesis reactions.
Reactions that have only one reactant are decomposition reactions.
Reactions that involve cations switching places are single replacement reactions.
Which type of reaction is shown by this equation?
- synthesis
- single replacement
- decomposition
- combustion
Reactions that combine two or more reactants to produce one product are synthesis reactions.
Reactions that involve cations switching places are single replacement reactions.
Reactions that have only one reactant are decomposition reactions.
Reactions between a hydrocarbon and oxygen always result in combustion.
Which of the following reactions is NOT a replacement reaction?
- \(\text{Fe} + \text{CuSO}_{4} → \text{FeSO}_{4} + \text{Cu}\)
- \(2\text{Na} + 2\text{H}_{2}\text{O} → 2\text{NaOH} + \text{H}_{2}\)
- \(\text{ZnO} + 2\text{HCl} → \text{ZnCl}_{2} + \text{H}_{2}\text{O}\)
- \(2\text{Na} + \text{Cl}_{2} → 2\text{NaCl}\)
A single replacement reaction occurs when a single element ion replaces a similar ion in a compound.
A single replacement reaction occurs when a single element ion replaces a similar ion in a compound.
A double replacement reaction occurs when two compounds switch ions.
A synthesis reaction produces one product.
Summary
Questions answered correctly:
Questions answered incorrectly:
