Explanation:
a) Mass of potassium sulfate = 177 mg =0.177 g
1 g= 1000 mg
Molecular mass of potassium sulfate = 174.24 g/mol
Moles of potassium sulfate,n =
b) 1 mol = 1000 milli moles
0.001016 mol =0.001016 × 1000 milli moles = 1.016 milli moles
c)
n = moles of substance
V = Volume of the solution in L
Molarity of of potassium sulfate:
Volume of the solution = 775 mL = 0.775 L (Mass of solute is very less)
1 mol potassium sulfate gives 2 mol of potassium ions and 1 mole of sulfate ions.
Molarity of potassium ions:
Molarity of sulfate ions:
d)
Volume of solution = 0.775 L
Amount of potassium sulfate = 177 mg
e) Volume of the solution = 775 mL
Mass of potassium sulfate = 177 mg =0.177 g
f)