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
satela [25.4K]
3 years ago
14

A 2.17 g sample of acetylsalicylic acid required 23.88 mL of 0.5043 M NaOH for complete reaction. Addition of 13.46 mL of 0.4472

M HCl to the flask containing the aspirin and the sodium hydroxide produced a mixture with pH
Physics
1 answer:
Paul [167]3 years ago
4 0

Answer:

The pH of the mixture is 0.7926

Explanation:

Hi there!

The acetylsalicylic acid was completely neutralized by the sodium hydroxide so that the only protons present in the solution come from the HCl. The volume of the solution can be calculated as the addition of the volume of sodium hydroxide and the volume of HCl (assuming that the mixture is an ideal solution).

The number of moles of HCl added can be calculated as follows:

13.46 ml (0.4472 mol/1000 ml) = 6.019 × 10⁻³ mol

The volume of the solution is 13.46 ml + 23.88 ml = 37.34 ml

Then, we can calculate the concetration of protons in the solution:

[H] = 6.019 × 10⁻³ mol /0.03734 l = 0.1612 M

The pH of the mixture:

pH = -log[H]

pH = -log[0.1612] = 0.7926

You might be interested in
A 12.7 L box is filled with 6.0 moles of Argon gas and cooled to a temperature of 210 K. What is the pressure?
sp2606 [1]

Answer:

Gases are easily compressed. We can see evidence of this in Table 1 in Thermal Expansion of Solids and Liquids, where you will note that gases have the largest coefficients of volume expansion. The large coefficients mean that gases expand and contract very rapidly with temperature changes. In addition, you will note that most gases expand at the same rate, or have the same β. This raises the question as to why gases should all act in nearly the same way, when liquids and solids have widely varying expansion rates.

Explanation:

3 0
2 years ago
At a distance of 11 cm from a presumably isotropic, radioactive source, a pair of students measure 65 cps (cps = counts per seco
Alborosie

To solve the problem, it is necessary the concepts related to the definition of area in a sphere, and the proportionality of the counts per second between the two distances.

The area with a certain radius and the number of counts per second is proportional to another with a greater or lesser radius, in other words,

A_1*m=M*A_2

A_i =Area

M,m = Counts per second

Our radios are given by

r_1 = 11cm

R_2 = 20cm

m = 65cps

Therefore replacing we have that,

A_1*m=M*A_2

4\pi r_1^2*m = M * 4\pi R_2^2 M

r^2*m=MR^2

M = \frac{m*r^2}{R^2}

M = \frac{65*11^2}{20^2}

M = 19.6625cps

Therefore the number of counts expect at a distance of 20 cm is 19.66cps

7 0
3 years ago
Which type of reaction happens when a base is mixed with an acid?
4vir4ik [10]

Answer:

Neutralization Reaction

6 0
3 years ago
Read 2 more answers
How do wavelength and amplitude differ in simple waves?
Marina CMI [18]

Answer:

The amplitude measures the height of the crest of the wave from the midline. The wavelength measures the horizontal distance between cycles.

Explanation:

5 0
3 years ago
Read 2 more answers
How much does coast to coast membership cost?
CaHeK987 [17]
The price of coast to coast membership in united states could lie anywhere between $2,000 to $ 5,000
Unless you're a frequent user of this type of event, i think it would be economically more efficient if you pay the resort on one-day price
8 0
3 years ago
Other questions:
  • An astronaunt takes am object to the moon where there is less gravity. Explain how the mass amd weight of an object on the moon
    5·1 answer
  • The motorcycle travels with a constant speed v0 along the path that, for a short distance, takes the form of a sine curve. Deter
    5·1 answer
  • Which type of wave experiences a change in speed when entering a new medium?
    13·2 answers
  • An element has 4 protons, 5 neutrons, and 4 electrons. What is the atomic mass of the element
    15·1 answer
  • My brother stirs milk and sugar into his coffee. After he has finished stirring the coffee continues to spin around. What does t
    14·1 answer
  • Given the mechanism of C5M action, what is the most likely reason that C5M concentrations greater than 2 µM were NOT used by the
    15·1 answer
  • Help me plzzzz
    13·2 answers
  • Hey guys, I don't understand this. I am unable to find the answer, any help?
    8·2 answers
  • An elevator car has a mass of 750 kg, and its three passengers have a combined mass of 135 kg. If the elevator and its passenger
    9·1 answer
  • What discoveries support the idea of continental drift?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!