Unit Test — Cumulative exam Answers
25 verified answers1 views
21
Free Preview
Which type of reaction is always spontaneous?
A
an exothermic reaction that has an increase in disorderB
an exothermic reaction that has a decrease in disorderC
an endothermic reaction that has an increase in disorderD
an endothermic reaction that has a decrease in disorder22
Free Preview
A weak base is added to water. Which information is required to find the strength of its conjugate acid?
A
the value of Kb and the concentration of the weak baseB
the value of Kw onlyC
the values of Kb and KwD
the values of and Kw and the concentration of the weak base23
Given that Cu(s) + 2HCI(aq) Cu2+(aq) + 2CI–(aq) + H2(g) has an overall reduction potential of –0.34 V, what is a valid prediction about how this reaction works?
A
The reaction is not spontaneous and will require energy to proceed.B
The reverse reaction would require energy input in order to occur.C
The half reactions would both occur spontaneously.D
The reaction is not spontaneous, and it is impossible to make it occur.24
A gas has a temperature of 273.15 K and a pressure of 101.325 kPa. What can be concluded about the gas?
A
It has reached standard temperature and pressure.B
The pressure needs to be increased to reach the standard pressure.C
The temperature needs to be increased to reach the standard temperature.D
Both the temperature and pressure need to be lowered to reach STP.25
Which issue poses the greatest long-term challenge in the development of new nuclear power plants?
A
controlling carbon dioxide emissionsB
storage of radioactive wasteC
controlling fission reactionsD
mining of uraniumDid you find these answers helpful?
Verified answers available
TRY EDGENUITY HACKS
- Auto Complete Exams
- Auto Complete Assignments
- Skip Videos Instantly
50,000+ students using this