Answer:
Molarity = 0.08 M
Explanation:
Given data:
Volume of NaOH = 24.11 cm³ (24.11/1000 = 0.0241 L)
Mass of C₈H₅KO₄ = 0.43 g
Molarity of NaOH = ?
Solution:
First of all we will write the chemical equation:
C₈H₅KO₄ + NaOH → H₂O + KNaC₈H₄O₄
Number of moles of C₈H₅KO₄:
Number of moles = mass/ molar mass
Number of moles = 0.43 g / 204.22 g/mol
Number of moles = 0.002 mol
Now we will compare the moles of C₈H₅KO₄ with NaOH.
C₈H₅KO₄ ; NaOH
1 : 1
0.002 : 0.002
Molarity of NaOH:
Molarity = number of moles / volume in litter
Molarity = 0.002 mol /0.0241 L
Molarity = 0.08 M
