Answered step by step

Verified Expert Solution

Link Copied!

Question

1 Approved Answer

Posted on Jun 17, 2020

For what purpose was CH2Cl2, Na2CO3 and Na2SO4 used in obtaining caffeine from tea? Please explain briefly.

Step by Step Solution

★★★★★

3.33 Rating (156 Votes )

There are 3 Steps involved in it

Step: 1

A difference in solubility must occur to separate the waterlevel tannins to isolate caffeine Sodium ... blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

Step: 3

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Auditing and Assurance Services Understanding the Integrated Audit

Authors: Karen L. Hooks

1st edition

471726346, 978-0471726340

More Books

Students also viewed these Chemistry questions

Question

★★★★★

Caffeine was extracted from 10.0 grams of tea leaves (containing 0.5% caffeine) by solid-liquid extraction using 100.0 ml of water and liquid-liquid extraction using DCM. Initial tests on the...

Answered: 1 week ago

Question

★★★★★

What is the purpose of obtaining managements representations? What impact does the management representations letter have on other audit steps that need to be performed?

Answered: 1 week ago

Question

★★★★★

Briefly explain the purpose of the following planning tools: a) Timeline chart b) Run sheet 12.

Answered: 1 week ago

Question

★★★★★

Determine the global extreme values of the function on the given domain. f(x, y) = 5x- 3y, y x-2, yz-x-2, y 3

Answered: 1 week ago

Question

★★★★★

Determine which of the following matrices are orthogonal. For those that are orthogonal, find the inverse. (a) (b) (c) 12 2 2 0 100 010 0010 010 3-3-3 0 1000

Answered: 1 week ago

Question

★★★★★

Get the pen from your shirt pocket and start writing your answer to Question 1 on a sheet of paper. What are the therbligs involved?

Answered: 1 week ago

Question

★★★★★

=+c) Which model fits better?

Answered: 1 week ago

Question

★★★★★

Martha and Lew are married taxpayers with $400 of foreign tax withholding from dividends in a mutual fund. They have enough foreign income from the mutual fund to claim the full $400 as a foreign tax...

Answered: 1 week ago

Question

★★★★★

eBook Show Me HowPrint Item Question Content Area Break-even sales under present and proposed conditions Portmann Company, operating at full capacity, sold 1,000,000 units at a price of $188 per unit...

Answered: 1 week ago

Question

★★★★★

Three-Month Project NOTE! Templates needed Ampersand, Inc., is a small business that operates in Somerset, VT The company is located at 732 Appalachian Way, Somerset, VT 05363. Its federal Employer...

Answered: 1 week ago

Question

★★★★★

1) P.L.C. is considering three project alternatives to invest in Bishoftu Town with same initial investment of 120,000 birr. The cash inflows of the three investments is computed from the projected...

Answered: 1 week ago

Question

★★★★★

QuestionIV (17 marks). (4) Determine the steady-state surface temperature of an electric cable, 25 cm in diameter, which is suspended horizontally in still air in which heat is dissipated by the...

Answered: 1 week ago

Question

★★★★★

1. How can you assess if you are engaging in ethical communication? 2. What experiences have you had with cross-cultural communications? Please share at least one experience when this has gone well...

Answered: 1 week ago

Question

★★★★★

Input values to the quiz 3.5 1.5 0.8 Solve the problem below and enter answers in first row above. Do NOT enter units or any other tex A simply supported beam carrying a triangular distributed load...

Answered: 1 week ago

Question

★★★★★

Consider a plate of 2.4 m x 3.0 m shown below. First, find the temperature distribution at the interior nodes using a square grid with a length of 0.1 m and a relative error of 1E-6 for the case in...

Answered: 1 week ago

Question

★★★★★

I. What is business analysis? and how it is helpful for organizations? II. What does enterprise content management involve? III. What is business process management? IV. Outline the key benefits of...

Answered: 1 week ago

Question

★★★★★

Your Competitive Intelligence team reports that a wave of product liability lawsuits is likely to cause Digby to pull the product Dart entirely off the market this year. Assume Digby scraps all...

Answered: 1 week ago

Question

★★★★★

The relationship described in question 7 does not always appear to hold. What factors, besides the number of firms in the market, might affect margins?

Answered: 1 week ago

Question

★★★★★

Access the SEC case of Serological Corporation, Inc. at www.sec.gov/litigation/admin/34-45852.htm. Required: (a) Briefly describe the way that Serological Corporation improperly recognized revenue...

Answered: 1 week ago

Question

★★★★★

Veronica is an experienced staff auditor in charge of performing tests over equity accounts. According to the audit program, Veronica is supposed to utilize analytical procedures over the equity...

Answered: 1 week ago

Question

★★★★★

Meagan is a graduate student in the accounting program at your school. While she has excelled in her auditing classes, managerial and cost accounting, and AIS classes, she has not performed as well...

Answered: 1 week ago

Question

★★★★★

Sharon is going to an auction. Say whether each of the following is a rule, a strategy, or a payoff. a. Bids must increase in increments of $20. b. The highest bid wins the item being auctioned. c....

Answered: 1 week ago

Question

★★★★★

Return to the description of the student loan program that opened the chapter. Suppose that all students at the university are perfectly altruistic and share the universitys goal of reducing debt for...

Answered: 1 week ago

Question

★★★★★

Using backward induction in Figure 9P-3, decide which class a hypothetical college student should take her freshman year, assuming that she wants to be an economics major.

Answered: 1 week ago

Previous Question Next Question