
Types of Reactions HW

Quiz
•
Science
•
10th - 12th Grade
•
Medium
Standards-aligned
Kristina Tomei
Used 31+ times
FREE Resource
8 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Al(s) --> Al3+ + 3e-
Zn+2 + 2 e- --> Zn
The half-reactions for the oxidation-reduction reaction between Al(s) and Zn2+(aq) are represented above. Based on the half-reactions, what is the coefficient for Al(s)
if the equation for the oxidation-reduction reaction is balanced with the smallest whole-number coefficients?
1
2
3
4
Tags
NGSS.HS-PS1-7
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Ni(s)→Ni2+(aq) + 2e−
Ag+(aq) + e−→Ag(s)
Which of the following is the balanced net ionic equation for an oxidation-reduction reaction between Ag+(aq) and Ni(s) based on the half-reactions represented above?
Ag+(aq) + Ni(s)→Ag(s) + Ni2+(aq)
2Ag+(aq) + Ni(s)→Ag(s) + 2Ni2+(aq)
Ag+(aq) + 2Ni(s)→Ag(s) + 2Ni2+(aq)
2Ag+(aq) + Ni(s)→2Ag(s) + Ni2+(aq)
Tags
NGSS.HS-PS1-2
NGSS.HS-PS1-7
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Cu(s) + 2AgNO3(aq)→Cu(NO3)2(aq) + 2Ag(s)
The reaction between solid copper and aqueous silver nitrate produces solid silver and a blue solution, as represented by the balanced equation shown above. Based on the balanced equation, which of the following identifies the oxidation and reduction half-reactions?
Oxidation: Cu(s)→Cu+(aq) + e−
Reduction: Ag2+(aq) + 2e−→ Ag(s)
Oxidation: Cu(s)→Cu+2(aq) + 2e−
Reduction: Ag+(aq) + e−→ Ag(s)
Oxidation: Ag+(aq) + e−→ Ag(s)
Reduction: Cu(s)→Cu+2(aq) + 2e−
Oxidation: Ag2+(aq) + 2e−→ Ag(s)
Reduction: Cu(s)→Cu+(aq) + e−
Tags
NGSS.HS-PS1-2
NGSS.HS-PS1-7
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
The diagrams above represent solutes present in two different dilute aqueous solutions before they were mixed. Water molecules are not shown. When the solutions were combined, a precipitation reaction took place. Which of the diagrams below is the best particle representation of the mixture after the precipitation reaction occurred?
Tags
NGSS.HS-PS1-7
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
When C2H4(g) reacts with H2(g), the compound C2H6(g)
is produced, as represented by the equation above. The reaction is correctly classified as which of the following types?
Acid-base, because two hydrogen atoms are donated to C2H4 (g)
.
Precipitation, because two reactant species form a single product.
Decomposition, because pure H2(g) is consumed.
Oxidation-reduction, because H2(g) is oxidized.
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
I2(aq) + C6H8O6(aq)→C6H6O6(aq) + 2I−(aq) + 2H+(aq)
The compound C6H8O6 reacts with I2 according to the reaction represented by the equation above. The reaction is correctly classified as which of the following types?
Acid-base, because H+ ions are produced.
Precipitation, because there are only two reactants but there are three products.
Double replacement, because both H and I appear as ions in the products.
Oxidation-reduction, because I2 is reduced.
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Cu(s) + 4 HNO3(aq) → Cu(NO3)2(aq) + 2 NO2(g) + 2 H2O(l)
Each student in a class placed a 2.00g sample of a mixture of Cu and Al in a beaker and placed in a beaker and placed the beaker in a fume hood. The students slowly poured 15.0 mL of 15.8 M HNO3(aq) into their beakers. The reaction between the copper in the mixture and the HNO3(aq) is represented by the equation above. The student observed that a brown gas was released from the beakers and that the solutions turned blue, indicating the formation of Cu2+(aq). The solutions were then diluted with distilled water to known volumes.
Which of the following is true about this reaction?
It is a Brønsted-Lowry acid-base reaction, because the solution is neutral at the end.
It is a Brønsted-Lowry acid-base reaction, because HNO3(aq) is a strong acid.
It is a redox reaction, because Cu(s) is oxidized and H+(aq) is reduced.
It is a redox reaction, because Cu(s) is oxidized and the nitrogen atom in NO3−(aq) is reduced.
Tags
NGSS.HS-PS1-2
8.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Which of the following is the conjugate acid of NH2- ?
NH2-
NH3
H+
NH4+
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