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
pantera1 [17]
3 years ago
15

A solution is prepared at that is initially in chloroacetic acid , a weak acid with , and in potassium chloroacetate . Calculate

the pH of the solution. Round your answer to decimal places.
Chemistry
1 answer:
ratelena [41]3 years ago
4 0

Answer:

2.94

Explanation:

There is some info missing. I think this is the original question.

<em>A solution is prepared at 25 °C that is initially 0.38 M in chloroacetic acid (HCH₂ClCO₂), a weak acid with Ka= 1.3 x 10⁻³, and 0.44 M in sodium chloroacetate (NaCH₂CICO₂). Calculate the pH of the solution. Round your answer to 2 decimal places.</em>

<em />

We have a buffer system formed by a weak acid (HCH₂ClCO₂) and its conjugate base (CH₂CICO₂⁻ coming from NaCH₂CICO₂). We can calculate the pH using the Henderson-Hasselbalch equation.

pH = pKa + log [CH₂CICO₂⁻]/[HCH₂ClCO₂]

pH = -log 1.3 x 10⁻³ + log (0.44 M/0.38 M)

pH = 2.94

You might be interested in
What is the mass of 3.2 moles of Sulfur?​
FinnZ [79.3K]

Answer:

820.864 g

Explanation:

1) The atomic mass of sulfur (found from the periodic table) is 32.065 amu. Use this mass to find the molar mass of Sulfur. Sulfur is S8 so the molar mass of sulfur is:

8 × 32.065 = 256.52 g/mol

2) To find the mass use the formula:

m = n × M where <em>m</em><em> </em>is the mass, <em>n</em><em> </em>is the number of moles, and <em>M</em><em> </em>is the molar mass.

3)

m \: = 3.2 \times 256.52

m = 820.864 \: g

8 0
2 years ago
Near Tatooine's famous Mos Eisley Space port you found a 520.79 mL block of gold. What is the mass in kilograms of this block?
postnew [5]

Answer:

10.051kg of gold is the mass in kilograms

Explanation:

The density of gold is 19.3g/mL. To solve this question we need to convert the volume of the block of gold to grams using its density. Then, we must convert grams to kilograms using the equivalence factor (1000g = 1kg):

<em>Mass in grams:</em>

520.79mL * (19.3g / mL) = 10051g of gold

<em>Mass in kilograms:</em>

10051g of gold * (1kg / 1000g) = 10.051kg of gold

3 0
3 years ago
QUESTION 1. Which of the following is not an example of a polymer?
zlopas [31]
I believe it's C. Amino acid is a monomer not a polymer. Q2 is B. Q3 I believe is A. Q4 is D.
6 0
3 years ago
Read 2 more answers
Which of the following statements describe what a normative system is?​
natta225 [31]

Explanation:

though the statements were not given let just give you a brief review of normative system.

A normative statement explains what should be base of the subject according to the belief through valued judgement that describes the fairness of the subject on public policy. Therefore, the unemployment rate should be lowered is a valued judgement based on the belief that it will bring economic welfare.

Normative systems, i.e., sets of norms, have two main. tions: a) to evaluate human actions, and b) to guide peop. The guidance and the evaluation based on a normativ. be good or bad.In social psychology three different normative behaviours have been identified: obedience, conformity and compliance.In the context of a normative system like law (or religion or morality), every statement of what one ought to do (or ought not to do) requires justification from a more general or basic statement. Such statements lead upward through the normative hierarchy until one reaches a foundational normative premise.

please rate brainliest if helps and follow

4 0
1 year ago
An atom containing 25 protons, 30 neutrons and 25 electrons will have an atomic mass of:
aliya0001 [1]
Atomic mass=no of neutron+no of electron
Atomic mass=25+30
Atomic mass=55
8 0
3 years ago
Other questions:
  • What is the boiling point elevation when ammonia (NH3) is dissolved in water to form a 3.5 molal solution? Kb for water is 0.52
    6·1 answer
  • Which is a characteristic of a mixture?
    12·1 answer
  • The antacid industry is a multibillion-dollar per year enterprise. millions of people suffer from acid indigestion caused by the
    10·1 answer
  • When these bond to make ccl4, what is the shape of a ccl4 molecule? linear circular tetrahedral trigonal planar
    11·2 answers
  • Se mezclan por error 70 mililitros de solución de HCl 0.5 Normal con 250 mililitros de solución de hidróxido de sodio 0.30 norma
    9·1 answer
  • What must be true about the matter at the start of a fire versus the end?
    9·1 answer
  • In an experiment 10 grams of a substance has a volume of 24 cm. What is the
    12·1 answer
  • If the air from the problem above contains 22% oxygen, 75% nitrogen and 3% argon, what is the partial pressure of oxygen near a
    9·1 answer
  • What is the key factor in defining a reaction as an oxidation-reduction reaction?
    14·1 answer
  • Can someone write ten points of:<br>Importance of fossil fuels in our lives.​
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!