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3 years ago

According to the arrhenius concept, the

1 answer:

8 0

According to the Arrhenius concept, the strength of an acid depends upon the H⁺ ions furnished by the acid.

<h3>What is the Arrhenius theory of acids?</h3>

According to the Arrhenius theory, acids are those substance which will give H⁺ ion in an aqueous solution.

And acidity of any substance will be calculated by using the pH value which can be calculated as pH = -log[H⁺].

Hydrolysis will not able to define the strength of the acid.
Concentration of the acid is also not valid to define the strength of the acid because all acids will not have H⁺ ion.
Number of moles of the base which are used for neutralization is also not used to define the strength of Arrhenius acid.

Hence H⁺ ions furnished by the acid is used to define the strength of Arrhenius acid.

To know more about Arrhenius acid, visit the below link:

brainly.com/question/1163742

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I need answers to question 1,2,3

sashaice [31]

Answer:

1. 0.125 mole

2. 42.5 g

3. 0.61 mole

Explanation:

1. Determination of the number of mole of NaOH.

Mass of NaOH = 5 g

Molar mass of NaOH = 23 + 16 + 1

= 40 g/mol

Mole of NaOH =?

Mole = mass /molar mass

Mole of NaOH = 5/40

Mole NaOH = 0.125 mole

2. Determination of the mass of NH₃.

Mole of NH₃ = 2.5 moles

Molar mass of NH₃ = 14 + (3×1)

= 14 + 3

= 17 g/mol

Mass of NH₃ =?

Mass = mole × molar mass

Mass of NH₃ = 2.5 × 17

Mass of NH₃ = 42.5 g

3. Determination of the number of mole of Ca(NO₃)₂.

Mass of Ca(NO₃)₂ = 100 g

Molar mass of Ca(NO₃)₂ = 40 + 2[14 + (3×16)]

= 40 + 2[14 + 48]

= 40 + 2[62]

= 40 + 124

= 164 g/mol

Mole of Ca(NO₃)₂ =?

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Mole of Ca(NO₃)₂ = 0.61 mole

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3 years ago

Given the equation representing a reaction:H2(g) + I2(g) → 2HI(g)Which statement describes the energy changesthat occur in this

Korvikt [17]

The given question is incorrect, here is a complete question.

Given the equation representing a reaction:

$H_2(g)+I_2(g)\rightarrow 2HI(g)+Energy$

Which statement describes the energy changes that occur in this reaction?

(1) Energy is absorbed as bonds are formed, only.

(2) Energy is released as bonds are broken, only.

(3) Energy is absorbed as bonds are broken, and energy is released as bonds are formed.

(4) Energy is absorbed as bonds are formed, and energy is released as bonds are broken.

Answer : The correct option is, (3) Energy is absorbed as bonds are broken, and energy is released as bonds are formed.

Explanation :

Bond energy : It is defined as the amount of energy required to break a molecules into its component atoms.

At the time of bond formation, the energy is released and at the time of bond breaking, the energy is absorbed.

In the chemical reaction, when the energy is shown in product side that means the energy is released.

In the chemical reaction, when the energy is shown in reactant side that means the energy is absorbed.

Hence, the correct option is, (3)

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3 years ago