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
Leviafan [203]
4 years ago
7

Calculate the molar solubility of fe(oh)2 in pure water. (the value of ksp for fe(oh)2 is 4.87×10−17.)

Chemistry
1 answer:
rosijanka [135]4 years ago
3 0
When we have this balanced equation for a reaction:
Fe(OH)2(s) ↔ Fe+2  + 2OH-

when Fe(OH)2 give 1 mole of Fe+2 & 2 mol of OH-
so we can assume [Fe+2] = X and [OH-] = 2 X
 when Ksp = [Fe+2][OH-]^2
and have Ksp = 4.87x10^-17 
[Fe+2]= X
[OH-] = 2X
so by substitution 
4.87x10^-17 = X*(2X)^2
∴X^3 = 4.8x10^-17 / 4
∴the molar solubility X = 2.3x10^-6 M
You might be interested in
The ions S-2, Cl-1, K+, Ca+2, Sc+3 have the same total number of electrons as the noble gas argon. How would you expect the radi
bearhunter [10]

Answer:

Cl^- <S^2-<Sc^3+ <Ca^2+<K^+

Explanation:

We know that ionic radius of ions decreases from right to left in the periodic table.  This is because, ionic radii decreases with increase in nuclear charge. This explains why; Sc^3+ <Ca^2+<K^+.

Secondly, even though Cl^- is isoelectronic with S^2-, the size of the nuclear charge in Cl^-  is larger compared to that of  S^2- . Hence Cl^-  is smaller than S^2- in ionic radius owing to increased nuclear attraction in Cl^-.

4 0
3 years ago
How are minute and seconds are related to degrees
jekas [21]

These minutes are further divided into sixty parts called seconds. The words minute and second used in this context have no immediate connection to how those words are usually used as amounts of time. In a full circle there are 360 degrees. Each degree is split up into 60 parts, each part being 1/60 of a degree.

No then contact me about that

5 0
3 years ago
Read 2 more answers
With thermodynamics, one cannot determine ________. With thermodynamics, one cannot determine ________. the temperature at which
Paraphin [41]

Answer:

With thermodynamics, one cannot determine <u>the speed of a reaction</u>.

Explanation:

Chemical thermodynamics, a branch of chemistry that deals with study of  interrelation of the heat and the work with the chemical reactions or with the physical changes of the state within confines of laws of thermodynamics.

Chemical thermodynamics' structure is derived from first two laws of chemical thermodynamics. From fundamental equations of Gibbs, a multitude of some equations which relates thermodynamic properties of thermodynamic system can be derived and can be used to calculate the reaction spontaneity, equilibrium constant, etc.

<u>Thermodynamics predicts about the direction, feasibility and the extent of a chemical process, it does not tell anything about the rate at which a chemical process may proceed.</u>

<u></u>

               

6 0
4 years ago
Which correctly describes the reaction between potassium and excess water?
nika2105 [10]
Balanced chemical reaction: 2K(s) + 2H₂O(l) → 2KOH(aq) + H₂(g).

KOH is inorganic compound p<span>otassium hydroxide, a strong base.
H</span>₂ is hydrogen gas.
In balanced chemical reaction number of atoms on both side of chemical reaction must be same. There are two potassium atoms, four hydrogen atoms and two oxygen atoms on both side of reaction.
7 0
3 years ago
Problema 5
malfutka [58]

Answer:

dwwq is a lot more than a lot more than a year ago and I am a very young ers and I

33rd century fox was a great place to girl and I was a little bit older than a couple of years ago and I was a little bit older than I was a little bit older than I was a little bit older than I was a little bit older than I was a little bit older than I was a little bit older than I was a little bit older than I was a little bit older than I was a little bit

Explanation:

read the full article below to see how the upper c and other factors of a child are at risk for the child or child care act and a lot 5AM in 555inches of a child is filtration of a single person who is filtration

4 0
3 years ago
Other questions:
  • How much heat must be removed from 456 g of water at 25.0°c to change it into ice at?
    5·1 answer
  • Consider the following reaction at 298 K: 2H2S(g)+SO2(g)→3S(s, rhombic)+2H2O(g),ΔG∘rxn=−102 kJ Is the reaction more or less spon
    11·1 answer
  • Which of the elements listed below is most likely to exhibit an expanded octet in its compounds? o na c n s?
    5·2 answers
  • Listed below are alterations made, one at a time, to the original experiment, and the experiment is repeated. after each alterat
    7·1 answer
  • What element has a total of 3 p-sublevel electrons?
    12·2 answers
  • What are some non-examples of subatomic particles
    10·1 answer
  • How many molecules are equal to 89.23g of calcium oxide
    13·2 answers
  • Name the functional group in the following molecule:
    5·1 answer
  • Potassium permanganate, KMnO, and glycerin, C3H5(OH)3, react explosively according to the
    8·1 answer
  • Ask me anything!!!!i´ll answer honestly
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!