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
7nadin3 [17]
3 years ago
15

Hydrogen sulfide decomposes according to the following reaction: 2H2S(g) ⇋ 2H2(g) + S2(g) Kc=9.30x10-8 at 700.°C.If 0.45 mol of

H2S is placed in a 3.0 L container, what is the equilibrium concentration of H2(g) at 700.°C?
Chemistry
2 answers:
Natalija [7]3 years ago
5 0

Answer:

[H₂] = 1.61x10⁻³ M

Explanation:

2H₂S(g) ⇋ 2H₂(g) + S₂(g)

Kc = 9.30x10⁻⁸ = \frac{[H_{2}]^2[S_{2}]}{[H_{2}S]^2}

First we <u>calculate the initial concentration</u>:

0.45 molH₂S / 3.0L = 0.15 M

The concentrations at equilibrium would be:

[H₂S] = 0.15 - 2x

[H₂] = 2x

[S₂] = x

We <u>put the data in the Kc expression and solve for x</u>:

\frac{(2x^2) * x}{(0.15-2x)^2}=9.30x10^{-8}

\frac{4x^3}{0.0225-4x^2}=9.30*10^{-8}

We make a simplification because x<<< 0.0225:

\frac{4x^3}{0.0225} =9.30*10^{-8}

x = 8.058x10⁻⁴

[H₂] = 2*x = 1.61x10⁻³ M

Mumz [18]3 years ago
3 0

Answer:

Equilibrium concentration of H2(g)

= 0.0016mol/l

Explanation:

For a gas equilibrium constant, kc;

Kc = [product]/[reactant] all in equilibrium gaseous state.

2H2S(g) --> 2H2(g) + S2(g)

Concentration of the reactant, H2S = 0.45/3 = 0.15mol/l

Initial Concentrations;

H2S = 0.15mol/l

H2 = 0

S2 = 0

Change in Concentrations;

H2S = -2y

H2 = 2y

S2 = y

Kc = 9.30 x 10^-8

Concentrations at equilibrium;

H2S = 0.15 - 2y

H2 = 2y

S2 = y

Inputting the Concentrations at equilibrium into the gas equilibrium constant;

(2y)^2* y/(0.15 - 2y)^2 = 9.3 x 10^-8

Solving for y;

y = 0.0008mol/l

Equilibrium concentration of H2(g) = 2y

= 2 * 0.0080mol/l

= 0.0016mol/l

You might be interested in
How does friction affect energy transformation
Westkost [7]
The friction can be used as a stopper for the electricity so it can slow

or it can increace speed
4 0
3 years ago
Read 2 more answers
PLEASE HELP!!!! 24 POINTS
Leno4ka [110]
A petroleum-based lubricant used to in farming machinery.
hope i helped very well
4 0
3 years ago
Read 2 more answers
HELP ME ASAP<br> !!!!!!!!!!
Cloud [144]

Answer:

the yellow one

Explanation:

it includes direction

3 0
2 years ago
Read 2 more answers
In a reaction of a potential new fuel, it is found that when 2.81 moles of the fuel combusts, 1,612 kJ of energy is released. Wh
Tema [17]

Answer:

-573.67

Explanation:

whenever energy is released in a chemical reaction, we would then expect the delta H of the reaction to be negative because the reaction is an exothermic reaction.

now we have that 2.81 moles of fuel when it combusts would releases 1612kJ of energy

thus, 1 mole will release 1612/2.81 = -573.67kJ of heat

Therefore the delta H of the reaction = -573.67 kJ/mol

3 0
2 years ago
25)
Taya2010 [7]

Answer:

The correct answer is B) electronegativities of the bonded atoms in a molecule of the compound .

Explanation:

When two atoms forming a bond differ in their electronegativities at that time bond polarity is generated

        In simple words a bond will be polar when the bonding electrons are not equally shared by two atoms.As a result the atom attract the bonding electron pair towards itself gain partial negative charge and the other atom gains partial positive charge.

       For HCl is a polar compound because H and Cl atom differ in their electronegativities,as a result the bonding electron pair is not shared equally by H and Cl atoms.

8 0
3 years ago
Other questions:
  • Use the helium-4 isotope to define atomic number and mass number. why does knowledge of atomic number enable us to deduce the nu
    7·1 answer
  • Which methods could be used to dilute a solution of sodium chloride (NaCl)?
    6·1 answer
  • Problem PageQuestion Ammonia will decompose into nitrogen and hydrogen at high temperature. An industrial chemist studying this
    5·1 answer
  • What would be an example of a landform from magma?
    5·2 answers
  • Does changing the number of neutrons change the identity of the element you have built?
    13·1 answer
  • determine the type of the following chemical reaction: Mg(s) + 2HCl(aq)——-&gt; H2(g) + MgCl2(aq) a. single replacement reaction
    5·1 answer
  • The compound NaCl (salt) has the same properties as sodium (Na) and chlorine (CI) because it is made of both of those elements.
    15·1 answer
  • GUYS I NEED HELP WITH THIS ASSIGNMENT MY LAST ASSIGNMENT FOR THE DAY
    5·1 answer
  • when glycerol reacts with three different fatty acids, how many stereogenic centers does the product triacylglycerol contain?
    5·1 answer
  • If a glass of water is left in open air for two days, what changes would it undergo in terms of
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!