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
Dennis_Churaev [7]
3 years ago
5

For the following systems at equilibrium C: CaCO3(s) ⇌ CaO(s)+CO2(g) ΔH=+178 kJ/mol D: PCl3(g)+Cl2(g) ⇌ PCl5(g) ΔH=−88 kJ/mol cl

assify these changes by their effect: System C - Increase temperature. System D - Increase temperature. System C - Decrease temperature. System D - Decrease temperature.
Chemistry
1 answer:
Rama09 [41]3 years ago
7 0

Explanation:

C: CaCO_3(s)\rightleftharpoons CaO(s)+CO_2(g)ΔH=+178 kJ/mol

For an endothermic reaction, heat is getting absorbed during a chemical reaction and is written on the reactant side.

A+\text{heat}\rightleftharpoons B

Any change in the equilibrium is studied on the basis of Le-Chatelier's principle.  This principle states that if there is any change in the variables of the reaction, the equilibrium will shift in the direction to minimize the effect.

Treat heat as a reactant and on increasing a reactant at equilibrium, shifts the reaction in the forward direction.

Increase temperature →  increase in heat → forward direction

Decrease temperature →  decease in heat → backward direction

System C - Increase temperature : Reaction will move forward

System C - Decrease temperature : Reaction will move backward

D: PCl_3(g)+Cl_2(g)\rightleftharpoons PCl_5(g) ΔH=−88 kJ/mol

The total enthalpy of the reaction comes out to be negative .

The temperature of the surrounding will increase.

For an exothermic reaction, heat is released during a chemical reaction and is written on the product side.

A\rightleftharpoons B+\text{ heat}

Any change in the equilibrium is studied on the basis of Le-Chatelier's principle.  This principle states that if there is any change in the variables of the reaction, the equilibrium will shift in the direction to minimize the effect.

Treat heat as a product and on increasing a product at equilibrium, shifts the reaction in the backward direction.

Increase temperature →  increase in heat → backward direction

Decrease temperature →  decease in heat → forward direction

System D - Increase temperature : Reaction will move backward

System D - Decrease temperature : Reaction will move forward

You might be interested in
How can you increase the amount of work done when you lift a book explain
Gnoma [55]
<h2>Work done = mgh </h2>

Explanation:

  • In this case, while lifting the book we are working against the force of gravity.

Using the Newton's laws, we can find the force F required for lifting the book having mass (m) and acceleration due to gravity (g) that is ;

  • F = mg

and, the change in the position of the book that is Δx (Height)

→ Δx = Final position - Initial position

which is only the height, then the amount of work done will be calculated by :

W= mgh

  • Where W = Work Done

m = Mass of the Body

g = Acceleration due to Gravity

h = Height of Body being displaced

4 0
3 years ago
A. glycerol
Natasha2012 [34]
Bzjnu8:i9.8&9olzlns soccer
4 0
3 years ago
Identify the following examples as either physical or chemical change.
Natalka [10]

Answer:

19. Physical

20. Physical

21. Chemical

22. Physical

23. Chemical

24. Chemical

25. Physical

Explanation:

6 0
3 years ago
How do you know a physical change has occurred when evaporating water produces gaseous water?
levacccp [35]

Answer:

Its b its the state not anything else

6 0
3 years ago
2. zinc (III) chlorate →
faust18 [17]

Answer:

27

Explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • If litmus paper is dipped in a very acidic and then in a basic what will happen
    14·1 answer
  • State four steps that we can take to protect our environment from plastic-related pollution.
    5·1 answer
  • During a chemical change items are lost or gained to make new substance true or false​
    14·1 answer
  • Fill in the missing blanks in the equation below active enzyme
    12·1 answer
  • Which statement best describes the compressibility of a gas?
    8·1 answer
  • Which statement best describes what happens when a person sees an orange t-shirt?
    12·2 answers
  • What Energy transformation occurs when gasoline burns in an automobile
    12·2 answers
  • The Big Bang theory is used to explain the origins of the universe. Why is this called a theory and NOT a law?
    9·2 answers
  • What is the energy of an electron in a Li+ ion when an electron moves from n = 2 to n =3?
    15·1 answer
  • If something has more mass does it mean it has more atoms?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!