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padilas [110]
3 years ago
15

A galvanic cell is made up of solid In in 0.10 M In(NO3 )3 and solid Zn in 0.0050 M Zn(NO3 )2. The measured cell potential for t

his cell is 0.47 volts, when the zinc electrode operates as the anode. Find the standard reduction potential for: In3+ (aq) + 3e- → In(s) Given that Zn2+ + 2e- → Zn -0.76 V
Chemistry
1 answer:
Usimov [2.4K]3 years ago
8 0

Answer:

-0.303 V

Explanation:

From Nernst equation

[In3+] =0.10 M

[Zn2+]=Zn in 0.0050 M

n= 6

E= 0.47V

Thus

E= E°- 0.0592/n log [Red]/[Ox]

0.47= E° - 0.0592/6 log 0.10/0.0050

0.47= E° - 0.0128

E°= 0.47- 0.0128

E°= 0.457 V

But

E°cell= E° cathode- E°anode

E°cathode= E°cell + E°anode

Hence

E°cathode= 0.457 + ( -0.76)

E°cathode= -0.303 V

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Vadim26 [7]

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I believe it's ... North Africa and the Italian Peninsula

5 0
3 years ago
If two trucks are moving at the same speed, but truck A has a mass of 3,000 kg, and truck B has a mass of 4,500 kg, what stateme
djverab [1.8K]

We want to compare the kinetic energy of two moving objects, we will see that the correct option is the first one:

"Truck B will have a greater stopping distance."

Remember that the kinetic energy of an object of mass M and velocity V is given by:

E = \frac{M}{2}*V^2

Here we know that truck A and truck B have the same velocity, but truck B has a larger mass.

Knowing that the kinetic energy increases linearly with the mass, we can conclude that truck B has the largest kinetic energy.

Because of this, we can also conclude that truck B will have a greater stopping distance, this happens because there is more kinetic energy that must be dissipated.

So the correct option is the first one:

"Truck B will have a greater stopping distance."

If you want to learn more, you can read:

brainly.com/question/12669551

5 0
3 years ago
In the reaction below, which species is oxidized? mn (s) + pb(no3)2 (aq) --> mn(no3)2 (aq)+ pb(s) question 5 options:
ExtremeBDS [4]
Mn is oxidized from Mn(0) to Mn(+2)
5 0
3 years ago
the reaction AB2C (g) <---> B2 (g) + AC (g) reached equilibrium at 900 K in a 5.00 L vessel. At equilibrium 0.0840 mol of
Verizon [17]

Answer:

k = 4,92x10⁻³

Explanation:

For the reaction:

AB₂C (g) ⇄ B₂(g) + AC(g)

The equilibrium constant, k is defined as:

k = \frac{[B_{2}][AC]}{[AB_2C]} <em>(1)</em>

Molar concentration of the species are:

[AB₂C]: 0,0840mol / 5L = <em>0,0168M</em>

[B₂]: 0,0350mol / 5L = <em>0,0070M</em>

[AC]: 0,0590mol / 5L = <em>0,0118M</em>

Replacing this values in (1):

k = \frac{[0,0070][0,0118]}{[0,0168]}

<em>k = 4,92x10⁻³</em>

I hope it helps!

7 0
3 years ago
How many hydrogen atoms are in an acyclic alkane with 13 carbon atoms
pashok25 [27]

Answer:

28

Explanation:

CnH2n+2 is the general molecular forma for a acyclic alkane

3 0
4 years ago
Read 2 more answers
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