Answer:
Ksp of KClO3 is 7.40
Explanation:
Step 1: Data given
Mass of KClO3 = 4.00 grams
Molar mass of KClO3 = 122.5 g/mol
Volume of water = 12 mL = 0.012 L
Temperature = 85 °C
Step 2: The balanced equation
KClO3 →K+ + ClO3-
Step 3: Calculate moles of KClO3
Moles KClO3 = mass KClO3 / molar mass KClO3
Moles KClO3 = 4.00 grams / 122.5 g/mol
Moles KClO3 = 0.03265 moles
Step 4: Calculate concentration
Concentration = moles / volume
[KClO3] = 0.03265 moles / 0.012 L
[KClO3] = 2.72 M
For 1 mKsp of KClO3 is 7.40ol KClO3 we have 1 mol K+ and 1 mol ClO3-
[KClO3] = [K+] = [ClO3-] = 2.72 M
Step 5: Calculate Ksp
Ksp = [K+][ClO3-]
Ksp = 2.72 * 2.72
Ksp = 7.40