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yulyashka [42]
3 years ago
5

What is the conjugate acid in the following equation:

Chemistry
1 answer:
yanalaym [24]3 years ago
5 0

Answer:

HNO₂

Explanation:

An acid is a proton donor; a base is a proton acceptor.

Thus, NO₂⁻ is the base, because it accepts a proton from the water.

H₂O is the acid, because it donates a proton to the nitrite ion.

The conjugate base is what's left after the acid has given up its proton.

The conjugate acid is what's formed when the base has accepted a proton.

NO₂⁻/HNO₂ make one conjugate acid/base pair, and H₂O/OH⁻ are the other conjugate acid/base pair.

NO₂⁻ + H₂O ⇌ HNO₂ + OH⁻

base     acid     conj.      conj.

                        acid       base

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PLEASE HELP I WILL GIVE BRAINLY TO CORRECT ANSWER (after I finish test)
riadik2000 [5.3K]

Answer:

i think its 2

Explanation:

because the H2 is seperate from the others it is the only one with a number.

8 0
3 years ago
The active ingredient in aspirin is acetylsalicylic acid. A 2.79 g sample of acetylsalicylic acid required 30.15 mL of 0.5137 M
vivado [14]

Answer:

Molar mass = 180 g/mol

Ka = 3.31x10⁻⁴

Explanation:

Because the acetylsalicylic is a monoprotic acid, it only leaves 1 mol of H⁺ in the reaction, so, it's necessary 1 mol of NaOH for each 1 mol of acetylsalicylic acid. The number of moles of NaOH is the volume, in L, multiplied by the concentration:

n = 0.03015*0.5137 = 0.01549

Which is also the number of moles of the acid. The molar mass is the mass, in g, divided by the number of moles:

M = 2.79/0.01549

M = 180 g/mol

After reacting with the base, the conjugate base of the acid will be formed, and the equilibrium between the acid form (HA) and the conjugate base (A⁻) is a buffer. It formed 0.01549 moles of A⁻, which will react with the moles of H⁺ from HCl to form HA.

nH⁺ = nHCl = 0.01741*0.448 = 0.0078 mol

A⁻           +       H⁺            ⇄   HA

0.01549     0.0078                 0        Initial

-0.0078     -0.0078         +0.0078   Reacts

0.0078            0                0.0078   Equilibrium

For a buffer, the pH can be calculated by the Handerson-Halsebach equation:

pH = pKa + log[A⁻]/[HA]

Because the volume is the same, we can use the number of moles instead of the concentration:

3.48 = pKa + log(0.0078/0.0078)

pKa = 3.48

pKa = -logKa

Ka = 10^{-pKa}

Ka = 10^{-3.48}

Ka = 3.31x10⁻⁴

5 0
3 years ago
What type of substance is always made up of a single type if atom
Damm [24]

Answer:

An Element

Explanation:

An Element is made up of only one type of atom (Gold, Silver, etc.)

Hope this helps!

4 0
3 years ago
Generally, most water reabsorption in a nephron occurs at the:_________
Allisa [31]

Answer:

proximal convoluted tubule and is called obligatory water reabsorption.

4 0
3 years ago
How many covalent bonds does oxygen form if each of its unpaired electrons participate in one bond?
ICE Princess25 [194]
The oxygen atom has 4 valence electrons. Valence electrons are the electrons found in the outermost shell of an atom. These are the electrons that participate in chemical reactions during bonding. Since 4 electrons make up 2 pairs, an oxygen atom is capable of making <em>2 covalent bonds</em>.
8 0
3 years ago
Read 2 more answers
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