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3 years ago

Why H +ve acts as lewus acid? Why NH3 acts as bronsted-lowery base? Why BF3 acts as Lewis acid? Make it easy and simple.. ✨

Chemistry

1 answer:

Delvig [45]3 years ago

5 0

Explanation:

Unlike the traditional definition of defining acid as any substance that can react with a base to form salt and water, there are two other definition of acid.

These are lewis acid and bronsted lowry acid.

Lewis acid is any substance that can accept a pair of non bonding electrons. This is why H+ is able to as a lewis acid.

Bronsted lowry definition on the other hand is as follows; A brosted lowry acid is any species that can donate a proton to another molecule. A bronsted lowry base is any specie that can accept a proton from another molecule. NH3 is able to accept a proton, hence it is termed as a bronsted lowry base.

BF3 act as a lewis acid because it can accept accept a pair of non bonding electrons. Generally; an atom, ion, or molecule with an incomplete octet of electrons can act as an Lewis acid.

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In looking at the bolded atoms in the answer choices, which pair consists of molecules having the same geometry?

ICE Princess25 [194]

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Reason:
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4 years ago

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3 years ago

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3 years ago

Light bending as it passes through a rain drop is an example of... Question 11 options: Refraction Transmission Reflection Diffr

Karolina [17]

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3 years ago

A certain liquid X has a normal boiling point of 108.30 °C and a boiling point elevation constant Kb=1.07 °C kg/mol. A solution

Fynjy0 [20]

Answer:

34,6g of (NH₄)₂SO₄

Explanation:

The boiling-point elevation describes the phenomenon in which the boiling point of a liquid increases with the addition of a compound. The formula is:

ΔT = kb×m

Where ΔT is Tsolution - T solvent; kb is ebullioscopic constant and m is molality of ions in solution.

For the problem:

ΔT = 109,7°C-108,3°C = 1,4°C

kb = 1.07 °C kg/mol

Solving:

m = 1,31 mol/kg

As mass of X = 600g = 0,600kg:

1,31mol/kg×0,600kg = 0,785 moles of ions. As (NH₄)₂SO₄ has three ions:

0,785 moles of ions× $\frac{1(NH_{4})_{2}SO_{4}}{3Ions}$ = 0,262 moles of (NH₄)₂SO₄

As molar mass of (NH₄)₂SO₄ is 132,14g/mol:

0,262 moles of (NH₄)₂SO₄× $\frac{132,14g}{1mol}$ = 34,6g of (NH₄)₂SO₄

I hope it helps!

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4 years ago