1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Neko [114]
3 years ago
11

An electric current of 1.00 ampere is passed through an aqueous solution of Ni(NO3)2. How long will it take to plate out exactly

1.00 mol of nickel metal, assuming 100 percent current efficiency?
Chemistry
2 answers:
Olegator [25]3 years ago
8 0

Answer: It takes 193000 seconds to plate out exactly 1.00 mol of nickel metal, assuming 100 percent current efficiency.

Explanation:

1 electron carry charge=1.6\times 10^{-19}C

1 mole of electrons contain= electrons

Thus  1 mole of electrons carry charge=\frac{1.6\times 10^{-19}}{1}\times 6.023\times 10^{23}=96500C=1 Faraday

Ni(NO_3)_2\rightarrow Ni^{2+}+2NO_3^-

Ni^{2+}+2e^-\rightarrow Ni

96500\times 2=193000Coloumb of electricity deposits 1.00 mole of nickel

Q=I\times t

where Q= quantity of electricity in coloumbs  = 193000 C

I = current in amperes  = 1.00 A

t= time in seconds = ?

193000=1.00A\times t

t=193000s

Thus it takes 193000 seconds to plate out exactly 1.00 mol of nickel metal, assuming 100 percent current efficiency.

djverab [1.8K]3 years ago
6 0

Answer:

time required is 193000 s

Explanation:

Ni^{2+}(aq)+2e^- \rightarrow Ni(s)

From the above it is clear that for plating out 1 atom of Ni, 2 electrons are needed.

Therefore, for plating out 1 mol of nickel metal, 2 mols of electrons are needed.

Charge of 1 mol of electron = 96500 C = 1 Faraday

Therefore, charge of 2 moles of electron = 2 × 96500

                                                                     = 193,000‬ C

Relation between current, charge and time is as follows:

Q = I × t

193000 = 1.00 × t

t = 193000 s

You might be interested in
Eat at Joe's! Did you know that this neon sign is experiencing a change of state? When a neon sign lights up, like the one you s
vlabodo [156]
D) <span> Electrical energy accelerates the electrons in the neon gas. The gas ionizes and becomes plasma, containing both positive and negative ions.</span>
5 0
3 years ago
Read 2 more answers
If you have 1.29 moles of NaCl in 4 liters of solution, what is the molarity of the solution?
Illusion [34]

Answer:

0.32M

Explanation:

Given parameters:

Number of moles of NaCl  = 1.29moles

Volume of solution = 4liters  = 4dm³

Unknown:

Molarity of solution = ?

Solution:

Molarity is one the ways of expressing the concentration of a solute in a solution. It is given as;

         Molarity  = \frac{number of moles }{volume}

The unit is given as M which is mol/dm³

    Input the parameters and solve;

           Molarity  = \frac{1.29}{4}    = 0.32mol/dm³ or 0.32M

7 0
2 years ago
In two or more complete sentences, describe the process of fractional distillation that used to refine crude oil.
Oksi-84 [34.3K]
I hope this helps you

3 0
3 years ago
Read 2 more answers
How can you obtain hydrogen from a mixture of ethene, hydrogen and ammonia gases?​
irga5000 [103]

Answer:

We normally separate unreacted hydrogen from ammonia (product) in Haber process. The reaction mixture contains some ammonia, plus a lot of unreacted hydrogen and nitrogen. The mixture is cooled and compressed, causing the ammonia gas to condense into a liquid.

3 0
3 years ago
If high tide occurs at 6:00 am, when will the next high tide occur?
Zepler [3.9K]
High tides occur 12 hours and 2 minutes apart do it would be at 6:25 pm
8 0
2 years ago
Read 2 more answers
Other questions:
  • An empirical formula:__________ 1. gives the relative number of ions of each element per formula unit. 2. gives the number of io
    5·1 answer
  • A 1.0mol sample of which of the following compounds has the greatest mass?
    9·1 answer
  • From which category of elements would you choose to make a container that would not shatter if dropped? Explain your answer plea
    7·1 answer
  • A chemist needs 225 ml of 2.4 m hcl. What volume of 12 m hcl must be mixed with water to form this solution?
    5·1 answer
  • IUPAC name for the compound
    15·2 answers
  • Una molécula de O2 esta hecho de​
    12·1 answer
  • In a polar bond, ____<br> are not shared equally between atoms.
    8·2 answers
  • Which statement best explains how weather is related to the water<br> cycle?
    15·2 answers
  • What are the [H+] and [OH-] for a substance with a pH of 9.2? Show work please
    14·1 answer
  • If the mass of an object is 20 kg and the acceleration is 5m/s2 . What is the force?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!