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3 years ago

Which of the following compounds is an Arrhenius base in water?

2 answers:

8 0

Arrhenius model considers a base a compound that produces OH(-)

H2SO4 produces H(+) and is an acid

C6H12O6 is an organic product, sugar, that does not produce OH(-)

HOClO2 = HClO3, which produces H(+) and is an acid

NH3 is believed to ionize in water and produce NH4(+) and OH(-).

As per this the answer is NH3.

Nevertheless, NH3 is not a good example of bases as per Arrhenius model, because it is not so evident that NH3 produces OH(-).

iogann1982 [59]3 years ago

3 0

Sodium hydroxide (NaOH) is an Arrhenius base, as NaOH is an ionic compound that dissociates into Na + and OH− ions when dissolved in water.

<h2>Further explanation </h2>

Acids and bases are two classes of chemicals that are very commonly found around us. For example, vinegar, citric acid, and acid in the stomach are classified as acid, while whiting and soda are classified as basic. Acids and bases have different properties. At first, acids and bases are distinguished by taste, where acids are sour while bases are bitter and slippery like soap. However, in general, acidic and basic substances are corrosive and toxic, especially in the form of high levels of the solution so that it is very dangerous if tested for its nature by the method of feeling it.

According to Arrhenius's theory, acids are defined as compounds that if dissociated in an aqueous solution liberate H + (hydrogen ions). A base is defined as a compound that dissociates in an aqueous solution liberating OH− (hydroxide ions).

Arrhenius Acid-Base Theory

This theory was first put forward in 1884 by Svante August Arrhenius. According to Arrhenius, the definitions of acids and bases, namely:

acid is a compound that dissolves in water releasing H + ions.
A base is a compound which, when dissolved in water, releases OH− ions.

Hydrochloric acid (HCl) which is very soluble in water is classified as Arrhenius acid, as HCl can decompose into H + and Cl− ions in water. Unlike the case with methane (CH4) which is not Arrhenius acid because it cannot produce H + ions in water even though it has H. Sodium hydroxide (NaOH) including Arrhenius bases, as NaOH is an ionic compound which dissociates into Na + and OH− ions when dissolved in water. The concept of Arrhenius acids and bases is limited to the condition of water as a solvent.

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acid and base theory brainly.com/question/2456608

Arrhenius theory brainly.com/question/2456608

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Class: high school

Subjects: Chemistry

Keywords: acids, bases, Arrhenius

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Nady [450]

Answer:

B. Acid + base = salt + water

Explanation:

In accordance to the proposal of a scientist called Svante Arrhenius, an acid is a substance that increases the H+ concentration of a solution by dissociating into it while the base increases the OH- concentration of a solution by dissociating into it. Furthermore, Arrhenius stated that this two ions combine in an aqueous solution to give water.

Hence, Arrhenius acid-base reaction is the combination of an acid and base to produce salt and water as products. That is; Acid + base = salt + water.

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3 years ago

What do isotopes have in common

alexira [117]

Answer:

Isotopes are atoms of the same element that have different numbers of neutrons but the same number of protons and electrons. The difference in the number of neutrons between the various isotopes of an element means that the various isotopes have different masses.

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3 years ago

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The process of ____ occurs when magma, lava, or a solute in a solution becomes a solid and the internal components will arrange

satela [25.4K]

Answer:

D. Crystallization

Explanation:

Let's clarify the irrelevant terms first.

unification: This term has nothing to do with chemistry at all
lithification: When the problem mentions magma and lava, you might think that this term is related to the process here. However, 'lithification' <em>do </em>have a precise meaning in geology. It refers to the process where sediments collapses into one single rock under pressure, which has nothing to do with the process mentioned here.

Now, for 2 terms that might confuse you: 'solidification' and 'crystallization' these also has precise scientific definition

Solidification is defined the process where substances in <em>liquid</em> phase changes its phase to <em>solid</em>. On first glance, this answer might seems correct, and yes, it is correct for this question. But not the <em>most</em> correct.

The keyword here is

'the internal components will arrange its self in an organized pattern.'

Crystallization is a special case of Solidification where the atoms or molecules of liquid solidify by spontaneously arrange themselves in periodic, ordered, and organized pattern. It might or might not happen during solidification depending on cooling rate, viscosity of liquid, and other factors.

So, Crystallization is the most correct answer here.

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3 years ago

What does conserving mass mean in a chemical equation?

Keith_Richards [23]

The answer would be C. Hope this helps

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What is the morality of a solution made with 0.88 moles of KCl and 2.0 L of water?

Anarel [89]

Answer:

$M=0.44M$

Explanation:

Hello,

In this case, the molarity is defined as the ratio of the moles of the solute to the volume of the solution in liters:

$M=\frac{n_{solute}}{V_{solution}}$

In this case, the solute is the KCl (potassium chloride) and the solution is made up of both water and KCl. Moreover, since during this type of dissolution processes, the volume of the solution is not significantly affected by the addition of the solute, the resulting molarity is:

$M=\frac{0.88mol}{2.0L}\\ \\M=0.44M$

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