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balandron [24]
3 years ago
9

Part iii. Is the dissolution reaction of ammonium nitrate enthalpy favored?

Chemistry
1 answer:
lesya [120]3 years ago
3 0

Answer:

No, it is not enthalpy favored since the chemical system gains energy.

Explanation:

The dissolution of ammonium nitrate in water is an endothermic process.

Endothermic process requires the system to gain energy to can dissolve the particles in water.

So, the reaction is not enthalpy favored.

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List the numbers of protons, neutrons, and electrons in Chlorine-18. (3 points)
Mama L [17]

The electronic configuration of Chlorine is 1s2 2s2 2p6 3s2 3p5.


There are three energy levels in chlorine


First energy level is n=1 has 1s2 so total 2 electrons


Second energy level is n=2, 2s2 2p6 so total 2+6= 8 electrons


Third has 3s2 3p5 electrons just 7 total... p can contain 6 electrons but only 5 are present. So the third level has lesser number of electrons than that can be filled


8 0
3 years ago
Powdered aluminum is used in the thermite reaction for welding metals. what role does the powdered aluminum play in this reactio
BigorU [14]
Powdered aluminum serves the reducing agent for this reaction. Aluminum powder is known as a powerful reducing agent. <span>Iron(iii) ions would have greater electron affinity as compared to a metallic aluminum thus it would easily gain electrons from aluminum making it less positive in this case formed into a neutral atom. </span><span>The chemical reaction is </span>

<span>Fe2O3 + 2Al = Al2O3 + 2Fe. 
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<span>Oxygen in the oxide compound does not participate in this redox reaction, as it is not changed </span>chemically<span>. Fe2O3 is an ionic compound which has of Fe[3+] ions and O[2-] ions. So, the net ionic reaction would be</span>

<span>Fe3+ + Al + 3O2- = Al3+ + Fe + 3O2- </span>

<span>The ionization energy of aluminum is greater than that of iron, so the said reaction would generate large amount of heat which is needed in welding.</span>
5 0
3 years ago
Why will a reaction occur between calcium oxalate and platinum?
olga2289 [7]

Answer:

Complex formation

Explanation:

At first sight, one may think that a reaction between calcium oxalate and platinum metal is impossible considering the relative positions of the two metals in the electrochemical series.

However, in solution, calcium oxalate dissociates into calcium and oxalate ions. When platinum is added to this solution, a complex is formed between the platinum ions and the oxalate ions. Hence a reaction occurs for this reason.

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Answer:

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