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
Effectus [21]
2 years ago
14

The gas arsine, AsH3, decomposes as follows: In an experiment at a certain temperature, pure AsH3(g) was placed in an empty, rig

id, sealed flask at a pressure of 392.0 torr. After 48 hours the pressure in the flask was observed to be constant at 488.0 torr. a. Calculate the equilibrium pressure of H2(g). b. Calculate Kp for this reaction
Chemistry
1 answer:
bazaltina [42]2 years ago
3 0

The equilibrium pressure of H_{2} is 288 torr. and K_{p} for this reaction is 0.786 atm.

from the reaction:-        2AsH_{3} ⇄ 2As + 3H_{2}

initial concentration     392 torr.              0

at equilibrium.              392 - 2x.               3x

and the final pressure in the flask = 488 torr.

Hence,

( 392 - 2x ) + 3x = 488\\ x = 488-392\\x = 96 torr.

The partial  pressure of H_{2} is 3 × 96 =  288 torr.

and AsH_{3} is 392 - ( 2 × 96 ) = 392 - 192 = 200 torr.

Now, to find K_{p} for this reaction, we will use K_{p} = \frac{(P_{H_{2} })^{2}  }{( P_{AsH_{3} } )^{2}}

putting all the values, we get,

K_{p} = \frac{(288)^{3} }{(200)^{2} }

     = 597.1968 torr.

     = 0.786 atm.  ( 1 atm = 760 torr. )

what do you mean by equilibrium?

Equilibrium in chemistry is the phase that exists when a chemical reaction and its opposite reaction happen at the same rates. This word's Latin origin dates back to the prefix aequi-, which means equal, and lbra, that indicates scale or balance.

Learn more about equilibrium reaction here:-

brainly.com/question/15118952

#SPJ4

You might be interested in
Dr. I. M. A. Brightguy adds 0.1727 g of an unknown gas to a 125-mL flask. If Dr. B finds the pressure to be 736 torr at 20.0°C,
AlladinOne [14]

Answer:

The gas that Dr. Brightguy added was O₂

Explanation:

Ideal Gases Law to solve this:

P . V = n . R . T

Firstly, let's convert 736 Torr in atm

736 Torr is atmospheric pressure = 1 atm

20°C = 273 + 20 = 293 T°K

125 mL = 0.125L

0.125 L . 1 atm = n . 0.082 L.atm / mol.K . 293K

(0.125L .1atm) / (0.082 mol.K /L.atm . 293K) = n

5.20x10⁻³ mol = n

mass / mol = molar mass

0.1727 g / 5.20x10⁻³ mol = 33.2 g/m

This molar mass corresponds nearly to O₂

7 0
3 years ago
Choose the correct answer from the choices below
marusya05 [52]

Answer:

either h or j

Explanation:

3 0
2 years ago
Kelly has some sand in a bucket, but she thinks that there may be some salt mixed in with her sand. How can she determine if the
Nana76 [90]
C)............. Hope it helps, Have a nice day:)
7 0
3 years ago
Read 2 more answers
Which can lead scientists to change a theory that has already been accepted? Check all that apply. changes to scientific laws ne
Romashka-Z-Leto [24]

Answer:

New experimental methods

Technological inventions

Explanation:

A scientific theory is usually not based on speculation. Scientific theories must have a solid empirical basis.

However, experimental methods are limited to the caliber of equipments available at the time in which a theory is formulated. With advancing years, more technological sophistication leads to the invention of new instruments and ultimately, the development of new experimental methods.

These innovations are likely to alter existing scientific theories as new evidences emerge, hence the answer.

5 0
3 years ago
Read 2 more answers
Balanced equation: 2C6H8O6 + O2 = 2C6H6O6 + 2H2O
Viefleur [7K]
It might be .011355439 moles oxygen using the dimensional analysis formula i divided by the molar mass of the ascorbic acid then multiplied by the molar mass of the O2 
5 0
3 years ago
Other questions:
  • Which observations supported Wegener’s theory that the continents move over time ??
    15·1 answer
  • After substantial heating, 6.25 g of iron produced 18.00 g of a compound with chlorine. The empirical formula is:
    7·1 answer
  • Identify the acid in the following acid-base reaction
    6·1 answer
  • Consider a sealed glass bottle. If the bottle is thrown into a fire, what will happen to the bottle and why? Which law is the be
    7·1 answer
  • HELP O DONT UNDERSTAND THIS!IM SOOO STRESSED HOW DO I SOLVE IT
    5·1 answer
  • What is an isotope and how does their abundance in nature differ from element to element
    10·1 answer
  • What is the correct IUPAC name for CuNO₃?
    7·2 answers
  • URGENT PLS HELP What are derived units?
    5·1 answer
  • How many molecules of CH4 are in 24.1 g of this compound?
    7·1 answer
  • Lynne is riding her bike at a speed of 22.55<br> km/hr. What is this speed in mi/min?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!