Asked Dec 3, 2019

Would the following reaction would occur spontaneously:  Answer with Yes or No.

C: Au (metal) + CuSO4 --> Cu (s) + AuSO4 

B: PbO + Al → Pb + AlO 

A: 2Na + CaSO4 --> Ca (s) + Na2SO4 


Expert Answer

Step 1

The reduction potentials of metals are compared with each other’s to get the reaction can occur or not occur.

The more positive reduction potential containing metal act as an oxidizing agent so finally itself gets reduced.

The more negative reduction potential containing metal act as a reducing agent so finally itself gets oxidized.

The reduction potentials are,


Image Transcriptionclose

Cа+2е — Ca Eo -2.76 V Na te Na A1+3e Pb2+2e Eo -2.71V >Al Eo -1.66 V >Pb E0.13 V Cu2+2e Cu E 0.34 V Au+3e >Au E°=1.50 V

Step 2

Reaction (C ) ,

Cu has less positive reduction potential than Au so the given reaction does not takes place spontaneously.

Reaction (B):

Pb has more positive reduction potential than Al so the ...

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in



Redox Reactions

Related Chemistry Q&A

Find answers to questions asked by student like you
Show more Q&A

Q: An iron tank is made up with the same amount of iron as in a cube of iron of side length 14.0 cm. Ca...

A: Given,Length = 14.0 cmDensity = 8.824 g/cm3


Q: A system initially at 1.50L changes its volume under an external pressure of 0.988atm while absorbin...

A: Given data:


Q: The following temperature/composition data were obtained for a mixture of two liquids A and B at 1.0...

A: The azeotropic mixture is defined as a mixture of two or more liquids in which it evaporates without...


Q: I need help solving (C)

A: Click to see the answer


Q: How many gallons of water does an aquarium hold if it measures 73.9 inches long by 19 inches wide an...

A: Given information:Length of aquarium = 73.9 inchesBreadth of aquarium = 19 inchesHeight of aquarium ...


Q: when solutions of Na2S and FeCI3 are mixed, What is the for the solid formed?

A: When solutions of Na2S and FeCI3 are mixed, then Fe2S3 is in solid form and NaCl in aqueous form.


Q: The rate of formation of NO in the reaction 2NOB' (g) d[NOJ/dt 0.24 mM s1. What was rate of formatio...

A: Given:d[NO]/dt = 0.24 mM s-1.Chemical reaction is given by,


Q: Explain the pH response of pure water as a buffer to additions of strong acid or bases

A: When pure water is added to strong acid or base, the pH changes drastically.Addition of strong acid ...


Q: A 19.5 g piece of titanium [cp=0.523 J/(g•°C)] is heated and the submerged in 1.50 x102 grams of wat...

A: Heat gained by water can be calculated as given below: