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weeeeeb [17]
4 years ago
8

Click the DeltaH is an Extensive Property button within the activity, and analyze the relationship between the two reactions tha

t are displayed. The reaction that was on the screen when you started and its derivative demonstrate that the change in enthalpy for a reaction, ΔH, is an extensive property. Using this property, calculate the change in enthalpy for Reaction 2.
Chemistry
1 answer:
charle [14.2K]4 years ago
7 0
Consider the reaction 
<span>2Al(OH)3(s)→Al2O3(s)+3H2O(l) </span>
<span>with enthalpy of reaction </span>
<span>ΔHrxn∘=21.0kJ/mol </span>
<span>What is the enthalpy of formation of Al2O3(s)? </span>

<span>Substance ΔHf∘ (kJ/mol) </span>
<span>HCl(g) −92.0 </span>
<span>Al(OH)3(s) −1277.0 </span>
<span>H2O(l) −285.8 </span>
<span>AlCl3(s) −705.6 </span>
<span>H2O(g) −241.8</span>
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At a given temperature, 2.6 atm of h2 and 3.14 atm of cl2 are mixed and allowed to come to equilibrium. the equilibrium pressure
Keith_Richards [23]

The solution would be like this for this specific problem:

<span>Given:

H2 = </span><span>2.6 atm
CL2 = 3.14 atm</span>

 

<span>
pressure H2 = 2.6 - x 
pressure Cl2 = 3.14 - x 
<span>pressure HBr = 2x = 1.13

x = 1.13 / 2 = 0.565 

<span>pressure H2 = 2.6 - 0.565 = 2.035
pressure Br2 = 3.14 - 0.565 = 2.575 

Kp = (1.13)^2 / 2.035 x 2.575</span></span></span>

 

= 1.2769 / (5.240125)

= 0.24367739319195629875241525726963

= 0.244

<span>Therefore, the Kp for the reaction at the given temperature is 0.244.

To add, </span>the hypothetical pressure of a gas if it alone occupied the whole volume of the original mixture at the same temperature is called the partial pressure or Kp.

7 0
3 years ago
An atom x contains 14 protons, 13 electrons, and 12 neutrons, and atom y contains 14 protons, 14 electrons, and 12 neutrons. wha
Vika [28.1K]
<span>a. x and y are atoms of the same element. 

If both atoms contain the same amount of protons, they are always the same element.
</span>
7 0
3 years ago
Read 2 more answers
B) If I start with 225.0 grams of lead (II) sulfite and 315.0 grams of sodium iodide, how many
Rama09 [41]

Answer:My answer is in the photo

Explanation:

8 0
3 years ago
In the reaction BaCl2 (aq) + Na2SO4 (aq) → BaSO4 (s) + 2NaCl (aq), what phases are the reactants in before the reaction?
Lapatulllka [165]
D.

both are stated to be in aqueous solutions by the (aq)
6 0
3 years ago
A 0.0372-m3 container is initially evacuated. Then, 4.65 g of water is placed in the container, and, after some time, all of the
Montano1993 [528]

Answer:

18.3 kilopascals

Explanation:

We are given that the volume of this container is 0.0372 meters^3, that the mass of water is 4.65 grams, and that the temperature of this water vapor ( over time ) is 368 degrees Kelvins. This is a problem where the ideal gas law is an " ideal " application.

_______________________________________________________

First calculate the number of moles present in the water ( H2O ). Water has a mass of 18, so it should be that n, in the ideal gas law - PV = nRT, is equal to 4 / 18. It is the amount of the substance.

We now have enough information to solve for P in PV = nRT,

P( 0.0372 ) = 4 / 18( 8.314 )( 368 ),

P ≈ 18,276.9

Pressure ≈ 18.3 kilopascals

<u><em>Hope that helps!</em></u>

5 0
3 years ago
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