Answer:
The molarity of sodium hydroxide solution is 0.172 M
Explanation:
Step 1: Data given
Molarity of perchloric acid (HClO4) = 0.198 M
Volume of HClO4 = 15.2 mL = 0.0152 L
Volume of NaOH = 17.5 mL = 0.0175 L
Step 2: The balanced equation
HClO4 + NaOH → NaClO4 + H2O
Step 3: Calculate molarity of the sodium hydroxide solution
a*Cb*Vb = b*Ca*Va
⇒with a = the coefficient of HClO4 = 1
⇒with Cb = the molarity of NaOH = TO BE DETERMINED
⇒with Vb = the volume of NaOH = 0.0175 L
⇒with b = the coefficient of NaOH = 1
⇒with Ca = the molarity of HClO4 = 0.198 M
⇒with Va = the volume of HClO4 = 0.0152 L
Cb*0.0175 = 0.198 * 0.0152
Cb = 0.172 M
The molarity of sodium hydroxide solution is 0.172 M
