Reference no: EM131095153
1. Simplest and most informative way to characterize a carboxylic acid is to determine its neutralization equivalent. The number of carboxyl group in the molecule of the following compound is 1. 0.21 gram of an unknown carboxylic acid solid is dissolved completely in ethanol and titrated with 0.1 N NaOH. At the endpoint 18.5 mL NaOH is used.
What is the molecular weight of the unknown?
2) Fisher Esterification of benzoic acid 13.0g Benzoic Acid (MW=122g/mol) and 30 mL of methanol (Density = 0.79g/cm^-3; MW = 32g/mol) was used for synthesis. 6.0g of methyl benzoate (MW 136g/mol) is obtained. SHOW YOUR WORK! A) Limiting reagent of this reaction? B) % Yielfod methyl benzoate?
3) consider the titration of 25.00ml of 0.650 M propanoic acid, HC3H5O2 ( Ka = 1.3 X 10^-5), with 0.750 M sodium hydroxide, NaOH, and answer the following questions?
A.what is the equivalence volume, ve, of the titration in ml?
B. What is the itital pH of the HC3H5O2 solution?
C. what is the pH at the equivalence point?
D. what is the pH at the half equivalence point, ve/2?
E. What is the pH after 9.00 ml of NaOh has been added?
F. what is the pH after 26.00ml of NaOH has beeb added?
|
Write the null and alternative hypothesis symbolically
: Write the null and alternative hypothesis symbolically and identify which hypothesis is the claim - Is the test two-tailed, left-tailed, or right-tailed? Explain.
|
|
Evaluate the results and stabilise changes
: BUHRM 6930 Change Agent Strategies. Case Study: Ecology Matters. Apply an action research approach with which to diagnose the need for change, introduce interventions, evaluate the results and stabilise changes
|
|
Influential in the global economy
: What changes in trade policy can be expected as countries such as China and India become increasingly influential in the global economy?
|
|
What is the five-number summary
: What is the five-number summary? Were there salary outliers for the Philadelphia Phillies? If so, how many and what were the salary amounts? What is the total payroll for each of the other three teams? Develop the five-number summary for each team..
|
|
What is the molecular weight of the unknown
: Simplest and most informative way to characterize a carboxylic acid is to determine its neutralization equivalent. The number of carboxyl group in the molecule of the following compound is 1. 0.21 gram of an unknown carboxylic acid solid is dissolved..
|
|
Microeconomic environment of corporate operations
: 1. Analyze the microeconomic environment of corporate operations. 2. Assess the impact of regulatory considerations on economic decisions. 3. Assess the impact of ethical considerations on economic decisions.
|
|
Select product category and profile lead brand personalities
: Discussed brand personalities, with brands almost taking on human-like characteristics. In Chapter 9, Jennifer Aaker discusses her brand personality scale (pages 306-307), which includes sincerity, excitement, competence, sophistication, and rugge..
|
|
About the personal savings account
: Suppose that Abdul opens a coffee shop. He receives a loan from a bank for $100,000. He withdraws $50,000 from his personal savings account. The interest rate on the loan is 8%, and the interest rate on his savings account is 2%. What is Abdul's impl..
|
|
Derive the market demand curves
: Derive the market demand curves for each individual and the market demand curve for Privet Drive. Suppose the market supply for Harry Potter books in Privet Drive is given by Qs =5 + P. Find the equilibrium price and quantity. How much does each co..
|