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3 years ago

HELP ASAPPPPP!!!! * worth 40 points + brainliest *

Chemistry

1 answer:

BigorU [14]3 years ago

5 0

Answer:

An Arrhenius acid is an acid that dissociates in water to release hydrogen ions.

for example,

HCl is an Arrhenius acid.

HCl +aq⇒ H⁺₍aq₎ +Cl⁻₍aq₎

Acids react with bases to produce salt and water.

Acids react with metals to liberate hydrogen gas and produce a salt.

Acids dissociate in water to form ionic solution that conduct electricity

The acids taste is sour.

Explanation:

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3 years ago

Milk of magnesia is often taken to reduce the discomfort associated with acid stomach or heartburn. The recommended dose is 1 te

Igoryamba

Answer:

8.61 mL of the HCl solution

Explanation:

The reaction that takes place is:

2HCl + Mg(OH)₂ → MgCl₂ + 2H₂O

From the given mass of Mg(OH)₂, we can calculate <u>the moles of HCl that are neutralized</u>:

4x10² mg = 400 mg = 0.400g

0.400g Mg(OH)₂ ÷ 58.32g/1mol = 6.859*10⁻³ mol Mg(OH)₂

6.859*10⁻³ mol Mg(OH)₂ * $\frac{1molHCl}{1molMg(OH)_{2}} =$ 3.429x10⁻³ mol HCl

Finally, to calculate the volume of an HCl solution, we need both the moles and the concentration. We can <u>calculate the concentration using the pH value</u>:

pH = -log[H⁺]

1.4 = -log[H⁺]

$10^{-1.4}$ = [H⁺]

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Thus, the volume is:

0.0398 M = 3.429x10⁻³mol HCl / Volume

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3 years ago

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Answer:

The retention factor of an ion is 0.10 .

Explanation:

Retention factor is defined as ratio of distance of distance traveled by solute to the distance traveled by solvent on chromatogram.

$R_f=\frac{d_{solute}}{d_{solvent}}$

We have:

$d_{solute}=d_{ion}=0.20 cm$

$d_{solven}=2.00 cm$

The retention factor of an ion :

$R_f=\frac{0.20 cm}{2.00 cm}=0.10$

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Answer:

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