Ans 9 :
Moles of NaOH used in the titration can be calculated using the formula :
Moles NaOH = molarity x volume (L)
here molarity of NaOH = 0.100 M
volume = 19.63 mL = 0.01963 L
putting values :
Moles = 0.100 M x 0.01963 L
= 0.00196 moles
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