Question

NaOH(aq) + KHP(aq) —>  NaKP(aq) + H2O(l)

a.) Describe the meaning of the molecular equation between the NaOH and KHP on the microscopic and macroscopic scales, and by mass.

b.) Consider the properties of NaOH. Identify reasons why it needs to be standardized before being used in a measurement.  

c.) Consider the properties of KHP. Identify any properties that make KHP a good choice for the standardizing of a basic solution.  

d.) This experiment requires an acid-base indicator. Describe how an acid-base indicator works and why it is needed for this experiment.

HCl(aq) + NaOH(aq) ——>  NaCl(aq) + H2O(l)

a.) Derive the complete and net ionic equations for the reaction of aqueous NaOH and HCl.

b.) Describe the meaning of the molecular equation between the NaOH and HCl solutions on the microscopic and macroscopic scales.

c.) Consider the properties of HCl solutions. Identify reasons why it needs to be titrated to determine its actual concentration.

d.) The HCl solution and the Sprite were both titrated with the standardized NaOH solution. Identify at least one aspect in which HCl and Sprite are similar and at least one aspect in which HCl a Sprite is different.

e.) This experiment was demonstrated with phenolphthalein and with a universal indicator. Describe the difference between the two indicators.

Answer 1

Thus, indicator helps us in detecting the end point correctly.