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deff fn [24]
1 year ago
5

Write a balanced equation for the reaction of Zn(H₂O)₄²⁺ in aqueous NaCN.

Chemistry
1 answer:
bonufazy [111]1 year ago
7 0

<u> </u><u>Na </u><u>is spectator </u><u>ion</u><u> , it is not present in final solutio</u>n.

What is a full balanced equation?

The global balance equations (also known as full balance equations) are a set of equations that characterize the equilibrium distribution (or any stationary distribution) of a Markov chain, when such a distribution exists.

Cyanide  will form a 4 co ordinate complex .

Charge of cyanide  = -1 ,    whereas water has no changes

Zn( H₂o)₄]²⁺  (aq)  +  4 CN⁻  (aq)       [ Zn (CN)₄]²  (aq)  +  4Ho

As Na is spectator ion , it is not present in final solution.

Learn more about balanced equation

brainly.com/question/7181548

#SPJ4

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The standard cell potential Ec for the reduction of silver ions with elemental copper is 0.46V at 25 degrees celsius. calculate
Cloud [144]

Answer : The \Delta G for this reaction is, -88780 J/mole.

Solution :

The balanced cell reaction will be,  

Cu(s)+2Ag^+(aq)\rightarrow Cu^{2+}(aq)+2Ag(s)

Here, magnesium (Cu) undergoes oxidation by loss of electrons, thus act as anode. silver (Ag) undergoes reduction by gain of electrons and thus act as cathode.

The half oxidation-reduction reaction will be :

Oxidation : Cu\rightarrow Cu^{2+}+2e^-

Reduction : 2Ag^++2e^-\rightarrow 2Ag

Now we have to calculate the Gibbs free energy.

Formula used :

\Delta G^o=-nFE^o

where,

\Delta G^o = Gibbs free energy = ?

n = number of electrons to balance the reaction = 2

F = Faraday constant = 96500 C/mole

E^o = standard e.m.f of cell = 0.46 V

Now put all the given values in this formula, we get the Gibbs free energy.

\Delta G^o=-(2\times 96500\times 0.46)=-88780J/mole

Therefore, the \Delta G for this reaction is, -88780 J/mole.

7 0
3 years ago
what is the correct electron configuration for an element with five electrons in the third energy level
Tasya [4]
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Vladimir [108]

Answer:

Physical science, in turn, can be divided into chemistry and physics. Chemistry is the study of matter and energy at the scale of atoms and molecules. ... Physics is the study of matter and energy at all scales—from the tiniest particles of matter to the entire universe but i dont really know if there is new information to discover

Explanation:

hope it help and if it doesnt sorry ;)

5 0
3 years ago
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