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3 years ago

Can someone tell me a simple way to define bases and acids.

Chemistry

2 answers:

schepotkina [342]3 years ago

5 0

Answer:

Explanation:

acid gain electron and base loses electrons.

sp2606 [1]3 years ago

5 0

Answer:

Explanation:

There are three different acid and base definitions.

Arrhenius Acid: H+ in H20

Arrhenius Base: OH- in H20

Bronsted- Lowery Acid: H+ donor

Bronsted- Lowery Base: Accepts H+

Lewis Acid: Accepts electron pairs

Lewis Base: Electron pair donor

The Lewis definition is the most common because it encompasses all acids and bases.

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According to its periodic table entry, how many electrons does nitrogen have in its valence level?

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3 years ago

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tatuchka [14]

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3 years ago

What is the pH of a solution with hydroxide ion concentration of 0.005

Julli [10]

Answer:

pH = 11.7

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4 0

3 years ago

A solution is prepared by mixing 0.0300 mol CH2Cl2 and 0.0500 mol CH2Br2 at 25 degrees C. Assuming the solution is ideal, calcul

Vinil7 [7]

Answer:

CH2Cl2 mole fraction = 0.833

CH2Br2 mole fraction = 0.167

Explanation:

Step 1: Data given

Number of moles CH2Cl2 = 0.0300 moles

Number of moles CH2Br2 = 0.0500 moles

Temperature = 25 °C

Vapor pressure of pure CH2Cl2 = 133 torr

Vapor pressure of pure CH2Br2 = 11.4 torr

Step 2: Calculate mol fraction in solution

Mol fraction CH2Cl2 = 0.0300 moles / (0.0300 + 0.0700)

Mol fraction CH2Cl2 = 0.300

Mol fraction CH2Br2 = 0.0700 moles / (0.0300 + 0.0700)

Mol fraction CH2Br2 = 0.700

Step 3: Calculate partial pressure

Partial pressure CH2Cl2 = 133 torr * 0.300 = 39.9 torr

Partial pressure CH2Br = 11.4 torr * 0.700 =7.98 torr

Step 4: Calculate the total pressure

total pressure = 39.9 + 7.98 = 47.88 torr

Step 5: Calculate mol fraction

partial pressure / total pressure = mole fraction

CH2Cl2 mole fraction = 39.9 / 47.88 = 0.833

CH2Br2 mole fraction = 7.98 / 47.88 = 0.167

3 0

3 years ago