In a potentiometric pH titration of a weak acid, why does the pH change rapidly with the addition of NaOH near the endpoint but changes very slowly for pH values near the pKa of the acid?

1. Compare the advantages and disadvantages of each pH method (i.e. cost, ease of use- time it takes to set up and take a pH measurement) including accuracy and precision of each method.

2. draw a diagram labeling the two silver/ silver chloride reference electrodes, glass membrane, and porous frit.

3. show how a charge is built up and produces a voltage that is measured.

1. Toby is considering two hotel projects. Project A will be in Jamaica with an initial investment of $865,000 and Project B will be in Canada with an initial investment of $750,000.

The cost of capital for Project A is 13% and the cost of capital for project B is 15%.
Calculate the following;

1. Calculate the discounted payback period of Project A.                                    
   
2. Calculate the discounted payback period of Project B.                                       
   
3. Calculate the net present value for Project A.                                                   
   
   
4. Calculate the net present value for Project B.   

Managemet can only accept one project. Which project should management accept? Explain your answer.                        

Which of the following is a PUBLIC good?

A. hotel

B. congested non-toll road

C. herd immunity

D. shared popcorn

As an executive housekeeper of a three (3) star hotel, explain in details with 'examples'  five (5)
constraints on accommodation management in the housekeeping department.