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3 years ago

Write the general chemical formula for an acid, and discuss what each component of the formula represents.

2 answers:

4 0

The general formula of an acid is HX where H+ acts as the cation while X can be a halogen (Cl-, Fl-, Br-, etc) and acts as the anion. There are also cases where X is an ion like SO42-, which brings two atoms of H in the formula. Strong acids dissociate completely while weak acids do not.

Amiraneli [1.4K]3 years ago

4 0

Answer: The general chemical formula for an acid is given below.

Explanation:

Acids are defined as the chemical species which donate hydrogen ions when dissolved in water.

The general chemical formula for an acid follows:

$HA(aq.)\rightarrow H^+(aq.)+A^-(aq.)$

where,

$H^+$ is the cationic part and is named as hydrogen ions

$A^-$ is the anionic part.

The nomenclature of the acids that are derived from the anions attached to hydrogen ion:

If the name of the anion attached ends with -ate, then the prefix of the acid is -ic. For Example: $H_3PO_4$ , the anion is phosphate and the name of the acid is phosphoric acid.
If the name of the anion attached ends with -ite, then the prefix of the acid is -ous. For Example: $H_2SO_3$ , the anion is sulfite and the name of the acid is sulfurous acid.
If the name of the anion attached ends with -ide, then the prefix of the acid is -ic. For Example: HCl, the anion is chloride and the name of the acid is hydrochloric acid.

Hence, the general chemical formula for an acid is given above.

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2 years ago

Johanna makes the table below to organize her notes about centripetal forces. Which type of force should she place in the cell m

Valentin [98]

Answer: The correct answer is Option 2.

Explanation:

Centripetal force is defined as the force that acts on a body moving in a circular path and is directed towards the center around which the body is moving.

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2 years ago

Read 2 more answers

What is the [H+] of a solution with a pH of 3? Use a scientific calculator.

Mariulka [41]

Answer:

1 x 10⁻³.

Explanation:

∵ pH = - log[H⁺]

3 = - log[H⁺].

log[H⁺] = -3.

∴ [H⁺] = 1 x 10⁻³.

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2 years ago

TRUE or FALSE: The rock closest to the ridge is newer and younger than the older rock

alina1380 [7]

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2 years ago

The decomposition of HBr(g) into elemental species is found to have a rate constant of 4.2 ×10−3atm s−1. If 2.00 atm of HBr are

Dennis_Churaev [7]

Answer:

7,94 minutes

Explanation:

If the descomposition of HBr(gr) into elemental species have a rate constant, then this reaction belongs to a zero-order reaction kinetics, where the reaction rate does not depend on the concentration of the reactants.

For the zero-order reactions, concentration-time equation can be written as follows:

[A] = - Kt + [Ao]

where:

[A]: concentration of the reactant A at the t time,
[A]o: initial concentration of the reactant A,
K: rate constant,
t: elapsed time of the reaction

To solve the problem, we just replace our data in the concentration-time equation, and we clear the value of t.

Data:

K = 4.2 ×10−3atm/s,

[A]o=[HBr]o= 2 atm,

[A]=[HBr]=0 atm (all HBr(g) is gone)

We clear the incognita :

[A] = - Kt + [Ao]............. Kt = [Ao] - [A]

t = ([Ao] - [A])/K

We replace the numerical values:

t = (2 atm - 0 atm)/4.2 ×10−3atm/s = 476,19 s = 7,94 minutes

So, we need 7,94 minutes to achieve complete conversion into elements ([HBr]=0).

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2 years ago