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4 years ago

What is an acid according to Arrhenius?

2 answers:

3 0

Hello there.

What is an acid according to Arrhenius?

b. a substance that is a hydrogen ion donor

AveGali [126]4 years ago

3 0

Answer:

The correct answer is b. a substance that is a hydrogen ion donor

Explanation:

According to Arrhenius Theory, a base is all that substance that when dissolved releases hydroxyl ions (OH–). The bases are also known as alkalis, because when the hydroxyl groups dissociate and release, the pH of the solutions increases, that is, the solution becomes alkaline. So its pH is greater than 7.

Also, according to this theory, acids are those substances that dissolved in water divide H + together with an anion. In this case the pH is less than 7.

But this theory has the disadvantage of being valid only in an aqueous medium. And it does not consider non-protic acids incapable of releasing hydrogenic ions, nor bases incapable of liberating hydroxylic ions.

The correct answer is b. a substance that is a hydrogen ion donor

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4 years ago

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vlada-n [284]

Answer:

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Explanation:

This excersise can be easily solved by the Henderson Hasselbach equation

C₆H₅NH₃Cl → C₆H₅NH₃⁺ + Cl⁻

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As we have value of pH, we need to determine the pOH

14 - pH = pOH

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Now we replace data:

pOH = pKb + log ( C₆H₅NH₃⁺/ C₆H₅NH₂ )

8.43 = 9.13 + log ( C₆H₅NH₃⁺ / 0.2 )

-0.7 = log ( C₆H₅NH₃⁺ / 0.2 )

10⁻⁰'⁷ = C₆H₅NH₃⁺ / 0.2

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3 years ago

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rodikova [14]

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Explanation:

In a nuclear reaction, the total mass and total atomic number remains the same.

For the given reaction:

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To calculate A:

Total mass on reactant side = total mass on product side

4 + 9 = 12 + A

A = 1

To calculate Z:

Total atomic number on reactant side = total atomic number on product side

2 + 4 = 6 + Z

Z = 0

$^{4}_{2}\textrm{He}+^9_4\textrm{Be}\rightarrow ^{12}_{6}\textrm{C}+^1_0\textrm{e}$

Hence, missing is $_{0}^{1}\textrm{e}$ .

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3 years ago

Which nitrogen base sequence is the partner of C-A-T-C-G-A?

aalyn [17]

Answer:

G-T-A-G-C-T

this is the answer

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mars1129 [50]

Answer:

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Explanation:

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3 years ago