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juin [17]
3 years ago
13

Answer the following questions that relate to electrochemical reactions. (a) Under standard conditions at 25˚C, Zn(s) reacts wit

h Co2+(aq) to produce Co(s). (i) Write the balanced equation for the oxidation half reaction. (ii) Write the balanced net-ionic equation for the overall reaction. (iv) Calculate the standard potential, E˚, for the overall reaction at 25˚C.
Chemistry
2 answers:
Tresset [83]3 years ago
8 0

Answer:

Explanation:

Half cell equations:

Oxidation

Zn(s) --> Zn2+(aq) + 2e-

E° = 0.7618 V

Reduction

Co2+(aq) + 2e- --> Co(s)

E° = -0.28 V

Balanced net ionic equation

Co2+(aq) + Zn(s) --> Zn2+(aq) + Co(s)

Standard electrode potential, E°cell = E°cathode - E°anode

For an electrochemical reaction,

Standard electrode potential, E°cell = E°reduction - E°oxidation

= -0.28 - (0.7618)

= -1.0418 V

Elanso [62]3 years ago
7 0

Answer:

0.48 V

Explanation:

Zn(s) ------------> Zn^2+(aq) + 2e. Oxidation half equation (-0.76V)

Co^2+(aq) + 2e-----------> Co(s). Reduction half equation (-0.28)

Zn(s) + Co^2+(aq) -------------> Zn^2+(aq) + Co(s) overall redox equation

Zinc is the anode while cobalt is the cathode.

E°cell= E°cathode - E°anode

E°cell= -0.28-(-0.76)= 0.48 V

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Ierofanga [76]
Answer:

= 46.06 grams

Explanation:

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25 = c (0.0821)(298)

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mass = (0.7664)(60.10)=40.06 grams
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Design and implement a program (name it SumValue) that reads three integers (say X, Y, and Z) and prints out their values on sep
rjkz [21]

Answer:

class sum (

public static void sumofvalue (int m, int n, int p)

{

System.out.println(m);

System.out.println(n);

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System.out.println("Average="+Sumvalue/3);

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Public class XYZ

(

public static void main(String [] args)

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sum ob=new sum();

int X=3;

int X=4;

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int X=10;

ob.sumofvalue(X,Y,Z);

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)

Explanation:

The above program is made in Java, in which first we have printed value in a separate line. After that, the average value of those three values has been printed according to the question.

The processing of the program is given below in detail

* The first one class named 'sum' has been created which contains the function to print individual value and the average of those three values.

* In seconds main class named 'XYZ', the object of that the above class had been created which call the method of the above class to perform functions.

* In the main class values are assigned to variables X, Y, Z.

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In terms of bonds, what would the molecule C₆H₁₂ be classified as?
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Explanation:

5 0
3 years ago
If a patient\'s blood pressure is 145 over 65 mmHg, what is it in atmospheres (atm)
kicyunya [14]

Converting mmHg to atm is solved by division.

Example: Convert 745.0 to atm.

Solution- divide the mmHg value by the 760.0 mmHg / atm.

745 mmHg over 760.0 mmHg/atm

atm value is 0.980263

Now, I am a medical student and we have never had to convert a BP (blood pressure) to atm from mmHg, only ever kPA. SO, I am going to take a guess here and say that when you do the work to solve this, you are going to convert the Systolic (upper #) which is the 145. You should get 0.190789 and then convert the Diastolic (lower #) which is 65. You should get 0.08552632.

So your fraction so to speak should read, 0.190789/0.08552632 or 0.190789 over 0.08552632

(Just to note that is way to low of a BP, although it is irrelevant) Best wishes and good luck. "Remember, never just look for the right answer, look for why it is the right answer!"

7 0
3 years ago
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