Question 1. An environmental scientist isolates a pollutant (compound X) from a factory’s effluent stream and...

Question 1.

An environmental scientist isolates a pollutant (compound X) from a factory’s effluent stream and dissolves it in water. Experiments are then conducted using liquid – liquid extraction to optimize its extraction. Using diethyl ether as the extracting phase, the following distribution ratios, D, are calculated as a function of pH:

pH	2	4	6	8	10	12
D	0.008	0.8	39	76	75	76

Does compound X appear to have acidic functional groups, basic functional groups or both types of groups? Explain your answer.
The distribution coefficient, K_D, at pH 12 is 76.3. Calculate the K_a value for compound X.
The scientist performed multiple extractions of the pollutant from 10 mL of water at pH 6 using a total volume of diethyl ether of 100 mL. What mass of compound X will remain in the aqueous phase after 4 consecutive extractions if the initial concentration of the pollutant was 0.1 M.

(Note: molar mass of compound X = 76 g/mol)

Expert Solution

queen_honey_blossom answered 1 year ago

An environmental activist research group collects 16 samples from a wastewater effluent stream of a chemical...

An environmental activist research group collects 16 samples from a wastewater effluent stream of a chemical plant in Bhopal (India) and measures the concentration of a potent cyanide-based toxin. Their results yield a mean concentration of ?. ? ?pm with a sample variance of ?. ?5 ???^?. It may be assumed that the data are the realization of a normally distributed random variable. (a) What is the two-sided 98% confidence interval for the measured toxin concentration in the effluent stream?...

1. When environmental pollutants degrade, they may become more toxic than the original pollutant that was...

1. When environmental pollutants degrade, they may become more toxic than the original pollutant that was emitted. True False

A new (NO)x compound was recently reported. The linear compound, N4O, can be synthesized from NaN3, sodium...

A new (NO)x compound was recently reported. The linear compound, N4O, can be synthesized from NaN3, sodium azide, and NOCl, nitrosyl chloride, and when allowed to warm above -50o it will decompose into N2O and N2. Draw a Lewis dot structure for the compound (using the decomposition products as a hint for the sequence of atoms). What are the predicted bond orders between the atoms?

SHOW ALL WORK 1) The air pollutant NO is produced in automobile engines from the high-temperature...

SHOW ALL WORK 1) The air pollutant NO is produced in automobile engines from the high-temperature reaction, N2 (g) + O2 (g) ⇌ 2 NO (g); Kc = 1.7 × 10-3 at 2300K . If the initial concentrations of N2 and O2 at 2300 K are both 1.4 M, what are the concentrations of NO, N2, and O2 when the reaction mixture reaches equilibrium? Show your work (20 points). 2) For each of the following equilibria, use LeChatelier’s principle to...

1) You are a research scientist studying a novel enzyme X, and you want to characterize...

1) You are a research scientist studying a novel enzyme X, and you want to characterize this new enzyme. You measure the velocity of the reaction with different substrate concentrations and get the following data: [S] (mM) Initial Velocity (mmol/min) 3.0 10.4 5.0 14.5 10.0 22.5 30.0 33.8 90.0 40.5 a) Graph the above data. From the graph, estimate KM and Vmax (Michaelis-Menten Plot) b) Use Lineweaver-Burk plot to calculate Km and Vmax. Show all equations and calculations. c) You...

Question: How does compound interest differ from simple interest?

1. a. The compound X3Y is 35.0% X. What is the molar mass of Y if...

1. a. The compound X3Y is 35.0% X. What is the molar mass of Y if the molar mass of X is 62.4 g/mol? b. What is the atomic mass of element X if 9.94 g XCl3 contains 3.26 g X? c. A 2.953-g sample of an oxide of V contains 1.654 g V. What is the empirical formula of the oxide? d. What is the empirical formula of a hydrocarbon if complete combustion or 6.900 mg of the hydrocarbon...

question 1: The total revenue received from the sale of x units of a product is...

question 1: The total revenue received from the sale of x units of a product is given by TRx= -3x^5 + 3/2 x^4+ x/4+ 12square x+ 6y Find the Average revenue AR. Marginal revenue MR. MR at x = 4. The actual revenue from selling10th item. Write down different rule of derivative. question 2 : Calculate the principle amount borrowed from the bank for 20 months at a rate of 7 3/4 % per annum with interest of...

QUESTION 1 The daily stream flow data for a particular catchment having an area of 6500...

QUESTION 1 The daily stream flow data for a particular catchment having an area of 6500 km2 are given in the table below. Separate the baseflow using Straight line method, Fixed base method, and recession Separation method. Calculate the total direct runoff for each method. Table Q1 Time Flows, Q (days) (m3/s) 1 1 600 2 1 550 3 5 000 4 10 300 5 8 600 6 6 500 7 5 000 8 3 800 9 2 800 10...

Question 1 What is the accumulated sum of the following stream of payments? $924 every year...

Question 1 What is the accumulated sum of the following stream of payments? $924 every year at the end of the year for 11 years at 5.88 percent, compounded annually. Round the answer to two decimal places and show work Question 2 For the next 15 years, you decide to place $4,171 in equal year-end deposits into a savings account earning 14.91 percent per year. How much money will be in the account at the end of that time period?...

Question