Standardizing a Base Solution by Titration

The procedure called titration can be used to standardize a solution of a base, which means determine its molar concentration. To standardize a base, a solution of the base with unknown molarity is gradually added to a solution containing a known mass of an acid. The procedure enables you to determine when the number of moles of added OH ions from the base equals the number of moles of H+ion from the acid. 

How can you determine the molar concentration of a base solution How do you know when the neutralization reaction has reached the equivalence point  

50-mL buret buret clamp ring stand sodium hydroxide pellets (NaOH) potassium hydrogen phthalate (KHC8H4O4) distilled water weighing bottle spatula 

500-mL Florence flask and rubber stopper 250-mL beaker centigram balance wash bottle phenolphthalein solution dropper 

What is the independent variable The dependent variable Constant  

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