1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
luda_lava [24]
3 years ago
10

I have 50.00 mL of 0.100 M ethyl amine (C2H5NH2). I gradually add a solution of 0.025 M nitric acid (HNO3) to the ethyl amine so

lution.
Required:
What is the pH after the addition of a total of 201 mL of the nitric acid?
Chemistry
1 answer:
sergeinik [125]3 years ago
6 0

Answer:

4.00 is the pH of the mixture

Explanation:

The ethyl amine reacts with HNO3 as follows:

C2H5NH2 + HNO3 → C2H5NH3⁺ + NO3⁻

To solve this question we need to find the moles of ethyl amine and the moles of HNO3:

<em>Moles C2H5NH2:</em>

0.0500L * (0.100mol/L) = 0.00500 moles ethyl amine

<em>Moles HNO3:</em>

0.201L * (0.025mol/L) = 0.005025 moles HNO3

That means HNO3 is in excess. The moles in excess are:

0.005025 moles HNO3 - 0.00500 moles ethyl amine =

2.5x10⁻⁵ moles HNO₃

In 50 + 201mL = 251mL = 0.251L:

2.5x10⁻⁵ moles HNO₃ / 0.251L = 9.96x10⁻⁵M = [H+]

As pH = -log [H+]

pH = -log 9.96x10⁻⁵M

pH = 4.00 is the pH of the mixture

You might be interested in
Identify the products and the reactants in the following chemical equations
liq [111]

Answer:

1-Mg+O2=reactants                  MgO-product

2-CaNr2+AlCl3=reactants        CaCI2+AIBr3=product

3-C2H4+O2=reactants              H2O+CO2=product

Explanation:

Reactants are on the left side and products on the right.

6 0
2 years ago
What part of the autonomic
spayn [35]

Answer:

C. Parasympathetic

Explanation:

7 0
2 years ago
When calculating percent error, the accepted value is in the denominator <br> True or false
kaheart [24]

Answer:

True

Explanation:

8 0
3 years ago
Read 2 more answers
Caila designs a model to test how the use of different combinations of energy resources would affect global temperatures. Which
Igoryamba
Solar and hydroelectric (just took test)
6 0
3 years ago
Read 2 more answers
Which is one way that Dalton's atomic theory has been shown to be incorrect?
KATRIN_1 [288]
The answer is D. His belief is was that atoms could not be split. That is what was disproved really fast ;)
6 0
3 years ago
Other questions:
  • A gas with a volume of 4.0 liters at a pressure of 205 kilopascals is allowed to expand to a volume of 12.0 liters. What will th
    6·1 answer
  • What is the justification required to make an arrest?
    6·1 answer
  • Are mushroom producing spores asexual or sexual
    15·2 answers
  • The wavelength of some yellow light is 580.0 nm. What is the frequency of this yellow light?
    15·2 answers
  • Which process describes vaporization that takes place below the surface of a liquid?
    8·2 answers
  • Which element(s) are not balanced in this equation?
    15·2 answers
  • "accelerated erosion, or change in vegetation cover" tend to persist and grow over time, rather than a return to the pre-disturb
    13·1 answer
  • Explain how particles transfer with radiation
    12·1 answer
  • Which of the following would be expected to have the highest surface tension?
    5·1 answer
  • What is the concentration of acetic acid if three 65.0 mL samples of actic acid were neutralized with 16.8 mL, 18.2 mL, and 17.3
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!