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
tester [92]
3 years ago
13

The formation constant* of [M(CN) 4 ]2− is 7.70 × 10 16 , where M is a generic metal. A 0.150 mole quantity of M(NO3)2 is added

to a liter of 0.820 M NaCN solution. What is the concentration of M2+ ions at equilibrium?
Chemistry
1 answer:
iogann1982 [59]3 years ago
3 0

Answer:

0 M.

Explanation:

Hello,

In this case, the undergoing reaction is:

M(NO_3)_2+NaCN\leftrightarrow [M(CN)_4]^{-2}+NaNO_3

Nonetheless, it only matters the reaction forming the given complex:

M^{+2}+4CN^-\leftrightarrow [M(CN)_4]^{-2}

In such a way, the formation constant turns out:

K_F=\frac{[[M(CN)_4]^{-2}]_{eq}}{[M^{+2}]_{eq}[CN^{-}]_{eq}^4}

Now, one could assume that the initial concentrations of the ions equals the original compounds concentrations:

[M^{+2}]_0=0.150M;[CN^-]_0=0.820M

In such a way, we modify the formation constant in terms of the change x due to the reaction progress:

K_F=\frac{x}{(0.150-x)(0.820-x)^4}=7.70x10^{16}

Now, solving for x:

x_1=0.15M\\x_2=0.82M

The feasible solution is 0.15M which will lead to an equilibrium concentration of M⁺² of 0M

[M^{+2}]_{eq}=0.15M-0.15M=0M

This fact has sense since the formation constant is very large.

Best regards.

You might be interested in
What is necessary in order to build an ionic compound?
Mandarinka [93]

Answer:

idk what is the qution

Explanation:

6 0
3 years ago
if you see a dark mass similar to a blown-up balloon at the top of a volcano, what type of feature are you most likely viewing
Mnenie [13.5K]
Conventional volcanoes are known to erupt after pressure builds up from new magma flowing into the magma chambers that lie below the vents on the Earth's surface.
6 0
3 years ago
Select the correct answer.
faltersainse [42]
The SI unit of time in seconds
4 0
3 years ago
Is it true that an atom has 3 subatomic particles with a negative nucleus and the neutrons outside the the nucleus
Nostrana [21]

Answer: atoms do have 3 subatomic particles but the nucleus is positive and the nucleus consists of protons and neutrons. Its positive because neutrons have no charge and protons have a positive charge. There are only electrons on the shells so no neutrons or protons on the shells

Explanation:

5 0
2 years ago
If a gas furnace releases 420 kcal of heat energy, what is the energy in kilojoules? (1 cal = 4.184 J)
Igoryamba
Answer:
The furnace releases 1757280 J 

Explanation:
We will do the conversion on two steps:
1- convert the kcal to cal
2- convert the cal to J

Step 1: converting kcal to cal
1 kcal is equivalent to 1000 cal. Therefore:
420 kcal is equivalent to 420*1000 = 420000 cal

Step 2: converting cal to J
We are given that:
<span>1 cal = 4.184 J
</span>Therefore:
420000 cal is equivalent to 420000 * 4.184 = 1757280 J 

Hope this helps :)
8 0
3 years ago
Other questions:
  • if you were to compare the mass of the products and reactants in a reaction, you would find that the mass of the products is alw
    5·1 answer
  • What were the learning goals of this lab experiment? Check all that apply.
    5·2 answers
  • What is the molar mass of calcium carbonate (CaCO3) ?
    9·2 answers
  • If radiation normally travels at the speed of light, why does it take longer than 100,000 years for energy from thermonuclear re
    13·1 answer
  • How do you remove unine odor from bedding?
    11·1 answer
  • You must make 1 L of 0.2 M acetic acid (CH3COOH). All you have available is concentrated glacial acetic acid (assay value, 98%;
    10·1 answer
  • 6. Mia and her best friend Claudia are comparing eye colors. Mia has blue eyes, and Claudia has brown eyes. What is a difference
    6·2 answers
  • Suppose green peas and sugar got mixed up . Which method you will use to separate them. Justify your answer .​
    15·1 answer
  • Select all of the statements that correctly describe DNA structure:
    8·1 answer
  • Indicate the compartment (A or B) that will increase in volume for each of the following pairs of solutions separated by a semi-
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!