Question

Enough of a monoprotic acid is dissolved in water to produce a 0.0138 M solution. The pH of the resulting solution is 2.56. Calculate the Ka for the acid.

Answer #1

**Answer –** Given, [HA] = 0.0138 M , pH = 2.56

We know the

pH = -log [H^{+}]

so, [H^{+}] = 10^{-pH}

= 10^{-2.56}

= 0.00275 M

We know ate equilibrium,

X = [H_{3}O^{+}] = [A^{-}] = 0.00275

[HA] = 0.0138 – 0.00275

= 0.0110 M

So, **Ka** = [H_{3}O^{+}]
[A^{-}] /[HA]

= 0.00275*0.0275 / 0.0110 M

= **6.87*10 ^{-4}**

Enough of a monoprotic acid is dissolved in water to produce a
0.0199 M solution. The pH of the resulting solution is 2.67.
Calculate the Ka for the acid.

Enough of a monoprotic acid is dissolved in water to produce a
0.0122 M solution. The pH of the resulting solution is 2.64.
Calculate the Ka for the acid.

Enough of a monoprotic acid is dissolved in water to produce a
0.0122 M solution. The pH of the resulting solution is 2.48.
Calculate the Ka for the acid.

Enough of a monoprotic acid is dissolved in water to produce a
0.0168 M solution. The pH of the resulting solution is 2.34.
Calculate the Ka for the acid.

Enough of a monoprotic acid is dissolved in water to produce a
0.0145 M solution. The pH of the resulting solution is 2.53.
Calculate the Ka for the acid.

Enough of a monoprotic acid is dissolved in water to produce a
0.0184 M solution. The pH of the resulting solution is 2.32.
Calculate the Ka for the acid.

a. Enough of a monoprotic acid is dissolved in water to produce
a 0.0163 M solution. The pH of the resulting solution is 2.51.
Calculate the Ka for the acid.
Ka= ________
b. The Ka of a monoprotic weak acid is 6.61 × 10-3. What is the
percent ionization of a 0.108 M solution of this acid?
Percent ionization= ___________

Enough of a monoprotic acid is dissolved in water to produce a
0.0167 M solution. The pH of the resulting solution is 2.36.
Calculate the Ka for the acid.
A certain weak base has a Kb of 7.50 × 10-7. What concentration
of this base will produce a pH of 10.25?

Enough of a monoprotic acid is dissolved in water to produce a
0.0163 M solution. The pH of the resulting solution is 6.41.
Calculate the pKa for the acid.

1)Enough of a monoprotic acid is dissolved in water to produce a
0.0103 M solution. The pH of the resulting solution is 2.69.
Calculate the Ka for the acid.
Hi can someone please help me do this question with explnation
and step by step.
Thank you

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 6 minutes ago

asked 14 minutes ago

asked 16 minutes ago

asked 17 minutes ago

asked 18 minutes ago

asked 30 minutes ago

asked 39 minutes ago

asked 54 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago