In June 2024
Search & Filtering
Will AgIO3 precipitate when 20 mL of 0.010M AgIO3 is mixed with 10 mL of 0.015M NaIO3? Ksp of AgIO3 is 3.1× 10-8
Balance this chemical equation
C3 H8 +O2 - CO2 + H2O
Look for the S° of the reactants and product. What is the ∆S of Ca3(PO4)2(s) ---> 3Ca2+(aq) + 2PO43-(aq)?
What is the ∆S of N2(g) + 3H2(g) ---> 2NH3(g)?
Given
N2(g)
(J/mol x K) = 191.5
H2(g)
(J/mol x K) = 130.6
NH3(g)
(J/mol x K) = 192.3
What is the total entropy change for the decomposition of hydrogen peroxide.
2H2O2(l) ---> 2H2O(l) + O2(g)
Given
H2O2(l)
(J/mol x K) = 109.6
(kJ/mol) = -187.8
H2O(l)
(J/mol x K) = 69.9
(kJ/mol) = -285.8
O2(g)
(J/mol x K) = 205.0
(kJ/mol) = 0
True or False
1. The second law of thermodynamics states that for a spontaneous process, the net energy of the system and its surroundings is always negative.
2. A positive ∆S signifies a drop in randomness.
3. A spontaneous process requires the action of external forces.
4. Thermodynamic properties include enthalpy, entropy and Gibbs free energy.
5. A negative free energy change indicates a spontaneous process.
6. Negative entropy change indicates increase in orderliness.
7. Thermodynamic properties are used to predict the spontaneity of a chemical process.
8. Enthalpy, entropy and Gibbs free energy are governed by the law of thermodynamics.
9. A spontaneous process occurs naturally.
True or False
10. Enthalpy is a measure of heat and randomness.
11. Entropy change is positive when heating liquid water to its boiling point.
12. Gibbs free energy is a measure of available energy.
13. The solid phase is the most random state hence, has the lowest entropy.
14. In freezing of water, entropy change will be positive because particles in ice are less orderly arranged than those of the liquid.
15. The spontaneity of a process depends on the total change in entropy.
A 550 J of work on the refrigerant during compression. How much is the change in the internal energy when 1, 000 J of heat is absorbed?
The head of a golf club might contain 250 grams of titanium. How many moles is this?
what happen to the amount of miles of SO2 when the total pressure on the equilibrium reaction
2SO2 + O2 > 2SO3
-
![Help me with my assignment!]()
Who Can Help Me with My Assignment
There are three certainties in this world: Death, Taxes and Homework Assignments. No matter where you study, and no matter…
-
![How to finish assignment]()
How to Finish Assignments When You Can’t
Crunch time is coming, deadlines need to be met, essays need to be submitted, and tests should be studied for.…
-
![Math Exams Study]()
How to Effectively Study for a Math Test
Numbers and figures are an essential part of our world, necessary for almost everything we do every day. As important…
