Which process represents a general method for the preparation of a metal from its
compounds? .
(A) neutralization (D) fusion
(B) reduction (E) sublimation
(C) oxidation
quit asking so many questions
Hint:
If call the metal, M, and the anion, X, then MX ==> M + X
Does this look like an acid base reaction to you. Not to me.
It might be reduction.
It might be oxidation.
It CAN]T be fusion (since they are coming apart, not being fused.)
It CAN'T be sublimation because there is no vapor there. So look at the oxidation states and figures if its B or C.
I left out this with the problem
Ni2+(aq) + 2e¨C ¡ú Ni(s) ¨C0.25 V
Sn4+(aq) + 2e¨C ¡ú Sn2+(aq) +0.15 V
Br2(l) + 2e¨C ¡ú 2Br¨C(aq) +1.07 V
so it says:
Which process represents a general method for the preparation of a metal from its
compounds? .
(A) neutralization (D) fusion
(B) reduction (E) sublimation
(C) oxidation
Then this
Ni2+(aq) + 2e¨C ¡ú Ni(s) ¨C0.25 V
Sn4+(aq) + 2e¨C ¡ú Sn2+(aq) +0.15 V
Br2(l) + 2e¨C ¡ú 2Br¨C(aq) +1.07 V
Sorry about that
My screen doesn't tell me much. I have gibberish between the 2e and the metal for each of them.
Ni2+(aq) + 2e¨C ¡ú Ni(s) ¨C0.25 V
Sn4+(aq) + 2e¨C ¡ú Sn2+(aq) +0.15 V
Br2(l) + 2e¨C ¡ú 2Br¨C(aq) +1.07 V
Still gibberish.
The process that represents a general method for the preparation of a metal from its compounds is called reduction. To arrive at this answer, we need to understand the different processes mentioned and determine which one fits the given context.
Neutralization is a chemical reaction that occurs between an acid and a base to form a salt and water. Since it does not involve the preparation of a metal from its compounds, we can eliminate option (A).
Fusion is the process of melting or liquefying a substance by heating. While fusion can be used in certain cases to extract certain metals, it is not a general method for the preparation of a metal from its compounds. Therefore, option (D) can be ruled out.
Sublimation is the direct conversion of a solid into a gas without passing through the liquid state. However, sublimation is not typically used to prepare metals from their compounds, so option (E) is not the correct answer.
Oxidation is a chemical reaction that involves the loss of electrons or an increase in oxidation state. While the process of oxidation can be part of the overall transformation in the preparation of a metal from its compounds, it alone does not represent a general method. Thus, option (C) can be eliminated.
By process of elimination, we are left with option (B) - reduction. Reduction involves the addition of electrons to an element or compound, typically by removing oxygen or adding hydrogen. It is the commonly used method for extracting metals from their ores or compounds, making it the correct answer in this context.