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WorksheetsEquilibrium and Thermodynamics
Total questions: 22
Worksheet time: 21mins
A compound that donates H+ ions is
A Bronsted-Lowry Acid
An Arrhenius Acid
A Bronsted-Lowry Base
An Arrhenius Base
What is the pH of a 1.53 x 10-6 M solution of HCl?
5.82
8.18
6.99
4.15
What does the equation in the image correspond to?
pKa
Ka
pH
[H+]
Which of the following shows the correct dissolution reaction for BaCl2?
Ba 2+(aq) + Cl2-(aq) → BaCl2(s)
BaCl2(aq) → Ba 2+(aq) + 2Cl-(aq)
BaCl2(s) → Ba 2+(aq) + 2Cl-(aq)
Ba 2+(aq) + 2Cl-(aq) → BaCl2(s)
The correct mathematical expression for finding the molar solubility of Sn(OH)2 is:
2x2 = Ksp
2x3 = Ksp
4x3 = Ksp
8x3 = Ksp
What is the Ksp expression for Cu3(PO4)2?
Ksp = [Cu+2]3[PO4-3]2
Ksp = [Cu+2]2[PO4-3]3
Ksp = [Cu+2][PO4-3]
Ksp = [Cu+2]3[PO4-3]
What type of salt is NaOCl?
acidic salt
basic salt
neutral salt
weak salt
strong salt
What type of salt is NH4Cl?
acidic salt
basic salt
neutral salt
weak salt
strong salt
The molar solubility of PbI2 is 1.52 x 10-3 M. Calculate the value of Ksp for PbI2.
3.51 x 10-9
1.40 x 10-8
4.62 x 10-6
1.52 x 10-3
What does Gibbs Free Energy tell us?
How much energy is given off by a reaction.
The tendency of a reaction to become "random"
How spontaneous a reaction is.
What information do we need to perform a calculation of Gibbs Free Energy?
Enthalpy of the reaction.
Entropy of the reaction.
The temperature of the reaction in Kelvin.
All of the above are needed.
Which of the following situations demonstrates high entropy?
water freezing
water vaporizing
steam condensing to water
Exothermic reactions feel
warm
cold
If ΔH and ΔS are both negative or positive, then ΔG has a -------------------sign.
Positive
Negative
Large
Variable
