Here is the chemical reaction that represents solid lead sulfate dissolving in w
ID: 963996 • Letter: H
Question
Here is the chemical reaction that represents solid lead sulfate dissolving in water:
PbSO4(s) Pb2+(aq) + SO42(aq)
Ksp = 1.8 × 108
Which of the following actions would shift this reaction toward solid lead sulfate?
a.) Add more lead sulfate.
b.) Add more sulfate ions.
c.)Remove sulfate ions.
d.) Remove lead ions.
In which of the following would lead sulfate be least soluble?
a) pure water
b) 1 M KNO3
c) 1 M Na2SO4
In which of the following would lead sulfate be most soluble?
a) 1 M NaNO3
b) 1 M H2SO4
c) 1 M Pb(NO3)2
d) 1 M CuSO4
Which action would shift this reaction away from solid lead sulfate and toward the dissolved ions?
a) adding lead ions
b) adding sulfate ions
c) removing sulfate ions
d) removing lead sulfate
Explanation / Answer
Here is the chemical reaction that represents solid lead sulfate dissolving in water:
PbSO4(s) Pb2+(aq) + SO42(aq)
Ksp = 1.8 × 108
Which of the following actions would shift this reaction toward solid lead sulfate?
a.) Add more lead sulfate.
b.) Add more sulfate ions. since tere will be plenty in saturation, no other option but to precipitate (solid formation)
c.)Remove sulfate ions.
d.) Remove lead ions.
In which of the following would lead sulfate be least soluble?
a) pure water
b) 1 M KNO3
c) 1 M Na2SO4 --> since SO4-2 ions will be present, therefore lowers solubility due to common ion effect
In which of the following would lead sulfate be most soluble?
a) 1 M NaNO3 since all other contain eitherPb+2 or SO4-2
b) 1 M H2SO4
c) 1 M Pb(NO3)2
d) 1 M CuSO4
Which action would shift this reaction away from solid lead sulfate and toward the dissolved ions?
a) adding lead ions
b) adding sulfate ions
c) removing sulfate ions; since solid will have more opportunity to saturate solution, i.e. solubility increases
d) removing lead sulfate