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3 years ago

A substance that can donate a pair of electrons to form a covalent bond is known as a(n) _____ base.

Chemistry

2 answers:

DENIUS [597]3 years ago

6 0

Answer : A substance that can donate a pair of electrons to form a covalent bond is known as a(n) Lewis-base.

Explanation :

According to the Lewis acid-base theory,

Lewis acid : It is a substance that can accepts pairs of electrons to form a covalent bond.

Lewis-base : It is a substance that can donates pairs of electrons to form a covalent bond.

For example :

$H^++OH^-\rightarrow H_2O$

In this reaction, $H^+$ ion is Lewis-acid and $OH^-$ ion is a Lewis-base. The $OH^-$ ion donates electrons to $H^+$ ion to form $H_2O$ .

Hence, a substance that can donate a pair of electrons to form a covalent bond is known as a(n) Lewis-base.

Gnesinka [82]3 years ago

5 0

A substance that can donate a pair of electrons to form a covalent bond is known as a Lewis base. It is any substance that can donate a pair of nonbonding electrons. The Lewis theory suggests that acids react with bases to share a pair of electrons with no change of oxidation numbers of any atoms.

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Savatey [412]

v = 75 mph = 33.52 m/s

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t = 4 sec

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= 33.52-24.58/4

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2 years ago

the gas left in an used aerosol can is at a pressure of 103 kPa at 25 degrees celsius if this can be thrown into fire what is th

Rainbow [258]

Hello!

The pressure of the gas when it's temperature reaches 928 °C is 3823,36 kPa

To solve that we need to apply Gay-Lussac's Law. It states that the pressure of a gas when the volume is left constant (like in the case of a sealed container like an aerosol can) is proportional to temperature. This is the relationship derived from this law that we use to solve this problem:

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Have a nice day!

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3 years ago

Read 2 more answers

Draw a mechanism for this reaction. 5-hydroxypentanoic acid forms 2-oxanone in the presence of acid. draw all missing reactants

Licemer1 [7]

Answer: -

The first step involves protonation of the carbonyl oxygen.

After protonation, the Alcohol oxygen now attacks the carbon of the carbonyl.

Thus a six membered ring is formed with 5 carbon atoms and 1 oxygen atom. The 1st position carbon atom has 2 OH groups.

One of these gets again protonated.

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3 years ago

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Mama L [17]

Answer:

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Explanation:

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monitta

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