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UkoKoshka [18]
3 years ago
8

Which reaction will occur?

Chemistry
2 answers:
xz_007 [3.2K]3 years ago
7 0
Only the second 2Fe + Al2O3 = 2Al + Fe2O3. In the first reaction iodide can not replace bromide from the salt. In the third reaction lead can not replace more active zinc metal from the salt.
kati45 [8]3 years ago
3 0

Answer:  2AgNO3+Ni\rightarrow Ni(NO_3)_2+2Ag

A single replacement reaction is one in which a more reactive element displaces a less reactive element from its salt solution.

1) 2NaBr+I_2\rightarrow 2NaI+Br_2

As iodine is less reactive than bromine, it will not be able to displace bromine from its salt solution, hence no reaction will occur.

2)2Fe+Al_2O_3\rightarrow 2Al+Fe_2O_3

As iron lies lower in reactivity series, it is less reactive than Aluminium. It will not be able to displace aluminium from its salt and hence no reaction occur.

3) 2AgNO3+Ni\rightarrow Ni(NO_3)_2+2Ag

As nickel lies above in reactivity series, it is more reactive than silver. It will be able to displace silver from its salt and hence reaction will occur.

4) Pb+Zn(C_2H_3O_2)_2\rightarrow Zn+Pb(C_2H_3O_2)_2

As lead lies lower in reactivity series, it is less reactive than zinc. It will not be able to displace zinc from its salt and hence no reaction occur.

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Use the periodic table to complete each nuclear fusion equation.
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Explanation:

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Blababa [14]
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5 0
3 years ago
Calculate the standard potential for the following galvanic cell: Ni(s) | Ni2+(aq) || Ag+(aq) | Ag(s) which has the overall bala
mylen [45]

Answer:

1.06  V  

Explanation:

The standard reduction potentials are:

Ag^+/Ag     E° =  0.7996 V  

Ni^2+/Ni     E° = -0.257   V

The half-cell and cell reactions for Ni | Ni^2+ || Ag^+ | Ag are

Ni → Ni^2+ + 2e-                     E° = 0.257   V

<u>2Ag^+ 2e- → 2Ag               </u>    <u>E° = 0.7996 V </u>

Ni + 2Ag^+ → Ni^2+ + 2Ag     E° = 1.0566  V

To three significant figures, the standard potential for the cell is 1.06 V .

8 0
3 years ago
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