Explain diprotic weak base used as a corrosion inhibitor

Reference no: EM13695819

Question- Piperazine, HN(C4H8)NH, is a diprotic weak base used as a corrosion inhibitor and an insecticide and has the following properties-
pKb1=4.22pKb2=8.67

For writing the reactions of this base in water, it can be helpful to abbreviate the formula as Pip-

Pip+H2OPipH++H2O??PipH++OH?PipH22++OH?

The piperazine used commercially is a hexahydrate with the formula C4H10N2?6H2O.

A 1.00-g sample of piperazine hexahydrate is dissolved in enough water to produce 100.0 mL of solution and is titrated with 0.500 M HCl.

What is the pH at the second equivalence point?

I need help for above question.

Reference no: EM13695819

Questions Cloud

Oxygen is put into a combustion analysis apparatus : Question- A 35.161 mg sample of a chemical known to contain only carbon, hydrogen, sulfur, and oxygen is put into a combustion analysis apparatus, yielding 62.637 mg of carbon dioxide and 25.641 mg of water.

How many miligrams of co2 and h2o are produced : Question- How many miligrams of CO2 and H2O are produced from the complete combustion of 5.745 mg of C10H7OH?2 C10H7OH + 23 O2 ---> 20 CO2 + 8 H2O

Calculate the concentration of cl : Part A. Calculate the concentration of Cl? required to just begin the precipitation of AgCl in a solution having metal-ion concentrations of 0.036M.

How many grams of solid nacn have to be added : Question- How many grams of solid NaCN have to be added to 1.4 L of water to dissolve 0.16 mol of Fe(OH)3 in the form of Fe(CN)63. (For simplicity, ignore the reaction of CN? ion with water.)

Explain diprotic weak base used as a corrosion inhibitor : Question- Piperazine, HN(C4H8)NH, is a diprotic weak base used as a corrosion inhibitor and an insecticide and has the following properties- pKb1=4.22pKb2=8.67

What are the partial pressures of no(g) and no2(g) : The Partial pressure of O2(g) at equilibrium is 0.136 atm. What are the partial pressures of NO(g) and NO2(g) and what is the total pressure in the flast at equilibrium

Determine the percentage of vowels : Create a Java program that asks the user to input a sentence in any language, counts the number of vowels in the sentence, divides it by the total number of characters in the sentence.

Write a balance formula unit and total ionic : Question- Write a balance (a) formula unit, (b) total ionic and (c) net ionic equations for the reaction of sodium acetate (NaCH3COO) with sulfuric acid

Calculate the concentration of cl : Question- In qualitative analysis, Ag+, Hg2+2 and Pb2+ are separated from other cations by the addition of HCl. 1) Calculate the concentration of Cl? Required to just begin the precipitation of AgCl in a solution having metal-ion concentrations of ..

User Account

All Pages