Pre-Lab Exercise: 1. What is a primary standard substance? Givean example. 2. What is meant by the term, equivalence point, duringan acid-base titration? 3. What is an indicator? What role does itplay in an acid-base titration? 4. Why is it necessary tostandardize a NaOH solution? 5. Find the molar concentration of aNaOH solution if 0.3999 g of it is dissolved in water to yield100.0 mL solution. Watch your sig. fig. 6. Consider the followingequation KOH(aq) + HCl(aq) → KCl(aq)+ H2O(l) Calculate the molarconcentration of a KOH solution if 25.0 mL of it was required tocompletely neutralize 37.5 mL of a 0.0800 M HCl solution. 7. Whatis the criterion to decide whether you need to do more then threetitrations?
