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2 years ago

Classify the following substances as a Bronsted-Lowry acid, Bronsted-Lowry base, Lewis acid, and/or Lewis base.

Chemistry

1 answer:

Margarita [4]2 years ago

7 0

Answer :

HCl : Bronsted-Lowry acid

$BF_3\text{ and }^{+}CCl_3$ : Lewis-acid

$^-H, CH_2O,^-OCH_3\text{ and }NH_3$ : Bronsted-Lowry base

$^-H, CH_2O,^-OCH_3,CH_3Cl\text{ and }NH_3$ : Lewis-base

Explanation :

According to the Bronsted Lowry conjugate acid-base theory, an acid is defined as a substance which donates protons and a base is defined as a substance which accepts protons.

According to the Lewis concept, an acid is defined as a substance that accepts electron pairs and base is defined as a substance which donates electron pairs.

HCl :

It is a Bronsted-Lowry acid that donates protons.

$BF_3\text{ and }^{+}CCl_3$ :

It is a Lewis-acid that accepts electron pairs.

$^-H, CH_2O,^-OCH_3\text{ and }NH_3$ :

It is a Bronsted-Lowry base that accepts protons.

$^-H, CH_2O,^-OCH_3,CH_3Cl\text{ and }NH_3$ :

It is a Lewis-base that donates electron pairs.

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2 years ago

Each type of mineral has a chemical composition that is what

denis23 [38]

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2 years ago

What is the reducing agent in the reaction below?

frez [133]

Option (a) is correct.
A reducing agent is the one which loses electrons to other substance and an oxidizing agent is one which accepts electrons.
Here, In $CrO_{3}$ , Cr has oxidation number 6+ in the L.H.S of the equation, but on R.H.S its oxidation number is 0 i.e. it Cr has gained electrons such that total charge is 0.
And the oxidation state of Al in the left-hand side of equation is 0 and in right-hand side, it is +6.i.e. it has donated its electrons to Cr.

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2 years ago

Read 2 more answers

If a tank of gas contains 4 L of N O2 how many molecules are in it

Jobisdone [24]

but heres a way to solve it

An athlete takes a deep breath, inhaling 1.85 L of air at 21°C and 754 mm Hg.

How many moles of air are in the breath? How many molecules?

Gas constant, R= 8.314 J mol ¹ K-1

PV = nRT

= 0.08206 L atm mol-1 K-1

= 62.36 L Torr mol-1 K-1 -

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1 year ago

Draw three different Lewis structures that could be possible for ZX2, assuming that Z is the central atom and that X is not hydr

Mariana [72]

Answer:

See images attached and explanation

Explanation:

I have drawn three possible structures of ZX2. We have to remember that the shapes of molecules could be predicted on the basis of the Valence shell electron pair repulsion theory.

The number of electrons on the valence shell of the central atom determines the shape of the molecule. We have also been told that X is not hydrogen.

If the two X atoms are arranged at a bond angle of 180 degrees, we could have either structure I or II. We will have these structures if the Z atom is sp2 hybridized.

Similarly, if the Z atom is sp3 hybridized, we may have structure III in which the molecule is bent with a bond angle less than 109 degrees. This may result from the presence of a lone pair on Z.

Note that all these structures obey the octet rule.

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2 years ago