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Natali5045456 [20]
3 years ago
13

A student observes what happens when two different aqueous solutions are mixed in a test tube. Which of the following observatio

ns would be most indicative of a precipitation reaction?
a. Gas bubbles are produced.
b. A solid settles out.
c. There is a color change.
d. The test tube warms.
Chemistry
1 answer:
meriva3 years ago
8 0

Answer:

B

Explanation:

In precipitation reaction, there is the emergence of a solid settling out of the solution. It can be visualized as a case in which a particular soluble solid becomes insoluble due to its reaction with another substance otherwise tagged as the precipitating reagent

It is thus reagent that draws it out of the solution by making it insoluble in its former solution. Hence it acts like it is calling out the substance by using a precipitating reagent

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The loss or gain of electrons

Explanation:

The loss or gain of electrons determines if an atom will become a cation or anion.

A cation is a positively charge ion

An anion is a negatively charged ion.

In an atom, we have sub-atomic particles:

 Protons are the positively charged particles

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Only electrons can be lost or gained in chemical processes that forms cations and anions.

When a neutral atom gains electron, it has more electrons than protons. This makes it negatively charged and we call it an anion.

When a neutral atom loses an electron, the number of protons is more. We call it a cation.

Learn more:

Cations brainly.com/question/4670413

#learnwithBrainly

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Tomtit [17]

Answer:

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Explanation:

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If <u>both ΔH and ΔS are positive</u>, then ΔG will be negative only when the TΔS  term is greater in magnitude than ΔH. This condition is met when T is large.

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