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2 years ago

What is meant by an acid and a base

Chemistry

2 answers:

jarptica [38.1K]2 years ago

5 0

Answer:

an acid is any hydrogen containing substance that. can donate protons.

a base is a molocule that is able to accept hydrogen ion from an acid

nalin [4]2 years ago

3 0

Explanation:

Acid is Sour, sharp, or biting to the taste; tart; having the taste of vinegar.
Base is any of a class of generally water-soluble compounds, having bitter taste, that turn red litmus blue, and react with acids to form salts.

Hope it will help):)

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How many molecules are in 0.0740 mol NH3?

Mariana [72]

Number of molecules NH₃ = 4.45 x 10²²

<h3>Further explanation </h3>

A mole is a number of particles(atoms, molecules, ions) in a substance

This refers to the atomic total of the 12 gr C-12 which is equal to 6.02.10²³, so 1 mole = 6.02.10²³ particles

Can be formulated :

N = n x No

N = number of particles

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No = 6.02.10²³ = Avogadro's number

mol of NH₃ = n = 0.074

So the number of molecules :

$\tt N=n\times No\\\\N=0.0740\times 6.02\times 10^{23}\\\\N=4.45\times 10^{22}$

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2 years ago

How acidic buffer resist change in pH on addition of acid and base.

andrew-mc [135]

Answer:

Buffers are solutions that resist changes in pH, upon addition of small amounts of acid or base. The can do this because they contain an acidic component, HA, to neutralize OH- ions, and a basic component, A-, to neutralize H+ ions. Since Ka is a constant, the [H+] will depend directly on the ratio of [HA]/[A-].

hope it's help

<h3>#carryONlearning </h3>

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3 years ago

What is meant by an acid and a base​

What is meant by an acid and a base