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
fiasKO [112]
3 years ago
15

An acid has an acid dissociation constant of 2.8 10–9. What is the base dissociation constant of its conjugate base?

Chemistry
2 answers:
Neporo4naja [7]3 years ago
6 0
The answer is 3.6 x 10^-6
Liono4ka [1.6K]3 years ago
6 0

<u>Answer:</u> The base dissociation constant for a conjugate base is 3.5\times 10^{-6}

<u>Explanation:</u>

To calculate the base dissociation constant for the given acid dissociation constant, we use the equation:

K_w=K_b\times K_a

where,

K_w = Ionic product of water = 10^{-14}

K_a = Acid dissociation constant = 2.8\times 10^{-9}

K_b Base dissociation constant = ?

Putting values in above equation, we get:

10^{-14}=2.8\times 10^{-9}\times K_b\\\\K_b=0.35\times 10^{-5}=3.5\times 10^{-6}

Hence, the base dissociation constant for a conjugate base is 3.5\times 10^{-6}

You might be interested in
The change of state from a gas to a liquid is called _____.
PolarNik [594]
The answer is
C. condensation
5 0
3 years ago
Read 2 more answers
A 64.4-g sample of potassium chloride was added to 200.0 g of water at 20 degrees C. Is the solution saturated, unsaturated, or
Tomtit [17]
Hey there!:

is the solution <span>saturated  , ie :

</span>They are the ones that have reached the exact solubility coefficient.<span>If we mix 64.4 g of KCl at 200.0 g of water at 20 º C, we'll see that the 32.2 g will dissolve and the remainder (32.2 g) will precipitate, forming the bottom body. In this case we will then have a solution saturated with background. However, if we want only the saturated solution, simply perform a simple filtration to separate the precipitate from the saturated solution.

hope this helps!</span>
7 0
3 years ago
The metal content of iron in ores can be determined by a redox procedure in which the sample is first oxidized with Br2 to conve
coldgirl [10]

Answer:

80.27%

Explanation:

Let's consider the following balanced equation.

2 Fe³⁺(aq) + Sn²⁺(aq) ⇒ 2Fe²⁺(aq) + Sn⁴⁺(aq)

First, we have to calculate the moles of Sn²⁺ that react.

\frac{0.1015molSn^{2+} }{1L} .13.28 \times 10^{-3} L=1.348\times 10^{-3}molSn^{2+}

We also know the following relations:

  • According to the balanced equation, 1 mole of Sn²⁺ reacts with 2 moles of Fe³⁺.
  • 1 mole of Fe³⁺ is oxidized from 1 mole of Fe.
  • The molar mass of Fe is 55.84 g/mol.

Then, for 1.348 × 10⁻3 moles of Sn²⁺:

1.348\times 10^{-3}molSn^{2+}.\frac{2molFe^{3+} }{1molSn^{2+} } .\frac{1molFe}{1molFe^{3+} } .\frac{55.84gFe}{1molFe} =0.1505gFe

If there are 0.1505 g of Fe in a 0.1875 g sample, the mass percentage of Fe is:

\frac{0.1505g}{0.1875g} \times 100 \% = 80.27\%

5 0
3 years ago
Look at the model below. Which formula is best represented by this model?​
Olenka [21]
The third answer because there are two of each atom
6 0
3 years ago
Which of the following is one way creativity can help scientists?
postnew [5]

Answer:

One way creativity is helpful to scientists is when they need to come up with a experiment or cure for something their imaginastion is very helpful. The reason for that is with creativity they could get answers much quicker!

Explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • For the following reaction, 5.91 grams of carbon monoxide are mixed with excess oxygen gas . The reaction yields 6.70 grams of c
    11·1 answer
  • Why do polar bonds form?
    13·1 answer
  • A scientist is studying a compound that includes nitrogen, carbon, oxygen, and hydrogen. Is the scientist studying an organic mo
    6·2 answers
  • What is the charge of the chromium ion in the compound crf3?
    9·1 answer
  • Which one of the following statements is correct? View Available Hint(s) Which one of the following statements is correct? Adeni
    12·1 answer
  • Salt (NaCl) is _____.<br> an acid<br> a base<br> a neutral
    10·1 answer
  • What is the symbol for the change in enthalpy?
    15·1 answer
  • 7. Aluminum, iron, copper, and oxygen are all examples of which of the following?​
    8·1 answer
  • Select whether the statement is for Speed, Velocity, or Acceleration.
    9·1 answer
  • Nuclear Equations HELP!!! 100PTS
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!