Chemistry, 09.12.2019 18:31 Katelyn1236

Which of the following correct pairs an acid with its conjugate base? h2po4^2- & po4^3-ch3cooh & ch3coo^-h3o^+ & oh^-hclo3 & hclo2

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Answer from: tangia

$CH_3COOH\ and\ CH_3COO^{-}$

Explanation:

Acids are the species which furnish hydrogen ions in the solution or is capable of forming bonds with electron pair species as they are electron deficient species.

When an acid donates a proton, it changes into a base which is known as its conjugate base.

Bases are the species which furnish hydroxide ions in the solution or is capable of forming bonds with electron deficient species as they are electron rich species. When a base accepts a proton, it changes into a acid which is known as its conjugate acid.

The acid and the base which is only differ by absence or presence of the proton are known as acid conjugate base pair.

Thus,

The conjugate base of the acid, $H_2PO_4^{-}$ is $HPO_4^{2-}$

And thus, $H_2PO_4^{-}\ and\ PO_4^{3-}$ is not a acid conjugate base pair.

The conjugate base of the acid, CH_3COOH is $CH_3COO^{-}$

And thus, $CH_3COOH\ and\ CH_3COO^{-}$ is a acid conjugate base pair.

The conjugate base of the acid, $H_3O^{+}$ is H_2O

And thus, $H_3O^{+}\ and\ OH^-$ is not a acid conjugate base pair.

The conjugate base of the acid, HClO_3 is $ClO_3^{-}$

And thus, $HClO_3\ and\ HClO_2$ is not a acid conjugate base pair.

Answer from: Quest

each column of the table is called a group. elements in a group share similar properties. groups are read from top to bottom. metal. metalloid. nonmetal. solid. liquid. gas. fe. hg. o. 2. 3. 4. 5. 6. 7. 8. 9. 2. beryllium. 9.012. 4. sodium. 22.990. 11. 3. magnesium. 24.305. 12. potassium. 39.098. 19. 4. calcium. 40.078. 20. i guess i

Answer from: Quest

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

$^{m}_{4}x$ and $^{m}_4y$

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

$^{m}_{5}x^{-}$

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be $^{9}_{5}be^{-}$ and $^{9}_{4}be$ .

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.

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Which of the following correct pairs an acid with its conjugate base? h2po4^2- & po4^3-ch3cooh...

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