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
TEA [102]
3 years ago
8

A weak acid (ha) has a pka of 4.001. If a solution of this acid has a ph of 4.110, what percentage of the acid is not ionized? (

assume all h in solution came from the ionization of ha.)
Chemistry
1 answer:
OverLord2011 [107]3 years ago
7 0

99.9224 % of the acid is not ionized.

____HA + H₂O ⇌ A⁻ + H₃O⁺

I: ___<em>c</em> ________0 ____0  

C: _-α<em>c</em> _______+α<em>c</em> __+α<em>c </em>

E: <em>c</em>(1-α) _______α<em>c</em> ___α<em>c </em>

pH = 4.110

[H₃O⁺] = α<em>c</em> = 10^(-4.110) mol/L = 7.76 × 10⁻⁵ mol/L

α = 7.76 × 10⁻⁵

1 – α = 1 - 7.76 × 10⁻⁵ = 0.999 224 = 99.9224 %

You might be interested in
Chemical energy is a form of A. kinetic energy only. B. both potential and kinetic energy. C. neither potential nor kinetic ener
svetlana [45]

wrong. If its for the study island its potential energy only.

6 0
3 years ago
When 150. g zinc sulfide are burned in excess oxygen, 68.5 g of zinc oxide are actually produced, along with sulfur dioxide. Det
Bumek [7]

%yield = 54.6%

<h3>Further explanation</h3>

Percent yield is the compare of the amount of product obtained from a reaction with the amount you calculated

(theoretical)

General formula:

Percent yield = (Actual yield / theoretical yield )x 100%

<h3 />

Reaction

2ZnS+3O₂ ⇒ 2ZnO+2SO₂

MW ZnS = 97.474 g/mol

  • mol ZnS

\tt \dfrac{150}{97.474}=1.54

MW ZnO = 81.38 g/mol

  • mol ZnO (from mol ZnS as limiting reactant, O₂ excess)

\tt \dfrac{2}{2}\times 1.54=1.54

  • Actual ZnO produced

\tt 1.54\times 81.38=125.33~g

Theoretical production = 125.388

  • %yield

\tt \dfrac{68.5}{125.33}\times 100\%=\boxed{\bold{54.6\%}}

4 0
2 years ago
By what factor would the average kinetic energy of the particles by increased if the temperature of a substance was increased fr
natita [175]
Average kinetic energy of a particle :
0.5 mv^2 = kT/2
so the kinetic energy = kT/2
assuming the same value of K
T1 = -49 + 273 = 224
T2 = 287 + 273 = 560

E2 / E1 = kT2 / 2 / kT1 / 2
E2 / E1 = T2 / T1
E2 / E1 = 560 / 224 = 2.5
so the average kinetic energy of the particle increases by 2.5
3 0
2 years ago
What is the difference between a scientific theory and an opinion?
Sergio039 [100]

Answer:

An opinion is a statement describing a personal belief or thought that cannot be tested (or has not been tested) and is unsupported by evidence. ... Theories are not described as true or right, but as the best-supported explanation of the world based on evidence.

5 0
2 years ago
What is the iodine test?
wariber [46]
is used to test for the presence of starch. Starch turns into an intense "blue-black" colour upon addition of aqueous solutions of the triiodide anion, due to the formation of an intermolecular charge-transfer complex. In the absence of starch, the brown color of the aqueous solution remains.
5 0
2 years ago
Read 2 more answers
Other questions:
  • Exactly one mole of an ideal gas is contained in a 2.00 liter container at 1,000 K. What is the pressure exerted by this gas?
    5·2 answers
  • In a balanced equation, the same number of each kind of atom is shown on each side of the equation. calculate the number of iron
    14·2 answers
  • Name three high temperature reactions
    9·1 answer
  • WILL MARK BRAINLIEST!!!! HELPPPP
    7·1 answer
  • During an exothermic reaction, ΔH for the reactants was 890 kJ/mol. Which of the following statements is correct about the ΔH fo
    6·2 answers
  • Disintegration is the word geologists use forA.When a rock becomes moist.B.When rock is physically broken into smaller pieces.C.
    10·1 answer
  • Draw what a chromosome looks like during metaphase. identify the chromatids and the centromere
    6·1 answer
  • How many atoms are in 45.22 moles of strontium​
    6·1 answer
  • Present in a state where it molecules are far apart during a change of state it's molecules slow down which change of state has
    15·1 answer
  • What’s the answer to this ( the proton has a ____ charge and it is found in the ____
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!