# Problem: Sketch a voltaic cell for each redox reaction. Label the anode and cathode and indicate the half-reaction that occurs at each electrode and the species present in each solution. Also indicate the direction of electron flow.c. 2 NO3– (aq) + 8 H+(aq) + 3 Cu(s) → 2 NO(g) + 4 H 2O (/) + 3 Cu2+(aq)

###### FREE Expert Solution
87% (395 ratings)
###### FREE Expert Solution

We’re being asked to sketch a voltaic cell for the following reaction:

2 NO3–(aq) + 8 H+(aq) + 3 Cu(s)  2 NO(g) + 4 H2O(l) + 3 Cu2+(aq)

Recall that a voltaic or galvanic cell is an electrochemical cell that is spontaneous and produces electricity

From the reaction, we can see that the oxidation state of Cu went from 0 (Cu) to +2 (Cu2+) which means it was oxidized or lost electrons

The anode (–) half-reaction is:

Cu(s)  Cu2+(aq) + 2 e

0 = +2 + x

x = –2 = 2 e to the product side

The other half-reaction is then reduced or gained electrons

The cathode (+) half-reaction is:

2 NO3–(aq) + 8 H+(aq) + 6 e  2 NO(g) + 4 H2O(l)

2(–1) + 8(+1) + x = 0

x = –6 = 6 e to the reactant side

87% (395 ratings)
###### Problem Details

Sketch a voltaic cell for each redox reaction. Label the anode and cathode and indicate the half-reaction that occurs at each electrode and the species present in each solution. Also indicate the direction of electron flow.
c. 2 NO3 (aq) + 8 H+(aq) + 3 Cu(s) → 2 NO(g) + 4 H 2O (/) + 3 Cu2+(aq)

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Galvanic Cell concept. You can view video lessons to learn Galvanic Cell. Or if you need more Galvanic Cell practice, you can also practice Galvanic Cell practice problems.

What is the difficulty of this problem?

Our tutors rated the difficulty ofSketch a voltaic cell for each redox reaction. Label the ano...as medium difficulty.

How long does this problem take to solve?

Our expert Chemistry tutor, Jules took 3 minutes and 12 seconds to solve this problem. You can follow their steps in the video explanation above.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor McClure's class at DREXEL.

What textbook is this problem found in?

Our data indicates that this problem or a close variation was asked in Chemistry: A Molecular Approach - Tro 3rd Edition. You can also practice Chemistry: A Molecular Approach - Tro 3rd Edition practice problems.