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
andreev551 [17]
4 years ago
10

At a certain temperature, the equilibrium constant, Kc, for this reaction is 53.3 At this temp, 0.3000 mol of H2 and 0.300 mol o

f I2 were placed in a 1L container to react. What concentration of HI is present at equilibrium? H2+I2<-> 2HI
Chemistry
1 answer:
Vlada [557]4 years ago
4 0
Your answer is: Kc = [HI]² / {[H2] [I2]} 
<span>53.3 = (2x)² / {(0.400M - x)(0.400M - x)} </span>
<span>sqrt(53.3) = 2x / (0.400M - x) </span>
<span>2.92 - 7.30x = 2x </span>
<span>x = 0.314M </span>

<span>[HI] = 2x = 0.628M

:) hopefully this helped. (:</span>
You might be interested in
How do wildfires impact animal behavior?
jarptica [38.1K]
Fires affect animals mainly through effects on their habitat.
7 0
4 years ago
what is the total amount of energy absorbed by the substance as it completely changes from a solid at 40 degrees to a gas at 200
astra-53 [7]

Answer:

I don't know the answer sorry man

6 0
3 years ago
A 25.00-mL sample of propionic acid, HC3H5O2, of unknown concentration was titrated with 0.141 M KOH. The equivalence point was
Nastasia [14]

Answer:

Concentration of hydroxide-ion at equivalence point = 8.3\times 10^{-6}M

Explanation:

HC_{3}H_{5}O_{2}+KOH\rightarrow C_{3}H_{5}O_{2}^{-}K^{+}+H_{2}O

1 mol of HC_{3}H_{5}O_{2} reacts with 1 mol of KOH to produce 1 mol of C_{3}H_{5}O_{2}^{-}

At equivalence point, all HC_{3}H_{5}O_{2} gets converted to C_{3}H_{5}O_{2}^{-}.

Moles of C_{3}H_{5}O_{2}^{-} produced at equivalence point is equal to moles of KOH added to reach equivalence point.

So, moles of C_{3}H_{5}O_{2}^{-} produced = \frac{43.76\times 0.141}{1000}moles=0.00617moles

Total volume of solution at equivalence point = (25.00+43.76) mL = 68.76 mL

Concentration of C_{3}H_{5}O_{2}^{-} at equivalence point = \frac{0.00617\times 1000}{68.76}M=0.0897M

OH^{-} produced at equivalence point is due to hydrolysis of C_{3}H_{5}O_{2}^{-}. We have to construct an ICE table to calculate concentration of OH^{-} at equivalence point.

C_{3}H_{5}O_{}^{-}+H_{2}O\rightleftharpoons HC_{3}H_{5}O_{2}+OH^{-}

I:0.0897                               0                    0

C: -x                                     +x                   +x

E: 0.0897-x                          x                      x

\frac{[HC_{3}H_{5}O_{2}][OH^{-}]}{[C_{3}H_{5}O_{2}^{-}]}=K_{b}(C_{3}H_{5}O_{2}^{-})=\frac{10^{-14}}{K_{a}(HC_{3}H_{5}O_{2})}

species inside third bracket represent equilibrium concentrations

So, \frac{x^{2}}{0.0897-x}=7.69\times 10^{-10}

or, x^{2}+(7.69\times 10^{-10}\times x)-(6.90\times 10^{-11})=0

So, x=\frac{-(7.69\times 10^{-10})+\sqrt{(7.69\times 10^{-10})^{2}+(4\times 6.90\times 10^{-11})}}{2}M = 8.3\times 10^{-6}M

So, concentration of hydroxide-ion at equivalence point = x M =  8.3\times 10^{-6}M

8 0
3 years ago
Which of the following is not a property of water?
Oxana [17]

Answer:

A) hydrogen bonds cause a high surface tension = FALSE

Explanation:

The rest are correct

5 0
4 years ago
A student observed pond water through a field microscope. He saw several organisms moving around in the water. His teacher expla
Veronika [31]

Answer:

Kingdom Monera.

Explanation:

The unicellular organisms the student observed were most likely from the Kingdom Monera because in this kingdom, unicellular organisms are included which are prokaryotic in nature. Monera is a Greek word means "single" is a kingdom that contains organisms that are made up of one cell and having a prokaryotic cell means having no nuclear membrane and we know that bacteria is also a unicellular organism and prokaryotic in nature.

7 0
3 years ago
Other questions:
  • You are given a piece of paper and a match. The paper has a mass of 2.5 g. You then light the match and light the piece of paper
    8·1 answer
  • Elemental boron can be formed by reaction of boron trichloride with hydrogen.
    10·1 answer
  • You fall off your skateboard and skin your knee so you wash it and put a bandage on it. Which seven systems are you using most d
    10·1 answer
  • Are ALL cations positive or negative ions
    12·2 answers
  • Earths surface is warmed by heat, ___ by the sun.
    14·1 answer
  • The amount of material<br> in an object is called
    15·1 answer
  • In a reversible reaction, chemical equilibrium is attained when the (A) rate of the forward reaction is greater than the rate of
    6·1 answer
  • When a substance condensed, what happens to the mass? (4 points)
    14·1 answer
  • A 750.0 mL solution contains 5.00 g of NaOH. If the molar mass of NaOH is 39.9969 g/mol, what is the molarity of the solution? (
    8·1 answer
  • 1. Which type of blood cell is the most numerous in the body?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!