Question

Van Deemter equation is written as: H = A + B/u + Cu where u is...

Van Deemter equation is written as: H = A + B/u + Cu

where u is mobile phase linear velocity. Sketch a typical van Deemter plot to show how H depends on u, and briefly explain each term in the equation and sketch how each depends on u.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
(a) Give the Van Deemter equation for plate height and describe the A, B and C...
(a) Give the Van Deemter equation for plate height and describe the A, B and C terms. (b) Draw a typical Van Deemter plot identifying the optimum mobile phase velocity and the minimum plate height.
Explain how each of the following would affect plate height (increase, decrease, leave unchanged). Briefly justify...
Explain how each of the following would affect plate height (increase, decrease, leave unchanged). Briefly justify each of your answers by indicating which terms in the van Deemter equation (A, B, C) would be affected and how. A. smaller particle size of stationary phase B. larger film thickness on stationary phase C. a distribution of particles sizes in the stationary phase packing D. small diffusion coefficient of the analyte E. lower solvent viscosity (LC)
For questions 5-9, indicate which terms (i.e. A, B, C) in the van Deemter equation will...
For questions 5-9, indicate which terms (i.e. A, B, C) in the van Deemter equation will be affected and how. 5.     A smaller particle size of the stationary phase packing A.   Decrease A only B.    Decrease C only C.    Increase A but decrease C D.   Decrease both A and C E.    Increase B 6.     A larger film thickness on the stationary phase packing A.   Decrease B only B.    Increase A only C.    Increase...
A person's utility fromm goods A and B is U(A,B)= A x B. The marginal utilities...
A person's utility fromm goods A and B is U(A,B)= A x B. The marginal utilities of each goods are MUa=B and MUb=A. The person has $120 income to spend on the two goods and the price of both goods equals $1. a) Write the equation for the budget line and sketch it on a graph – identifying relevant intercepts and slope – placing good A on the horizontal axis. b) Find the quantities of A and B that maximize...
A linear time invariant system has an impulse response given by ℎ[?] = 2(−0.5) ? ?[?]...
A linear time invariant system has an impulse response given by ℎ[?] = 2(−0.5) ? ?[?] − 3(0.5) 2? ?[?] where u[n] is the unit step function. a) Find the z-domain transfer function ?(?). b) Draw pole-zero plot of the system and indicate the region of convergence. c) Is the system stable? Explain. d) Is the system causal? Explain. e) Find the unit step response ?[?] of the system, that is, the response to the unit step input. f) Provide...
1.) A certain region is characterized by a force equation Fx (x)=8x^3-14x-6, where U is in...
1.) A certain region is characterized by a force equation Fx (x)=8x^3-14x-6, where U is in joules and x is in meters. a.) Find the proper units for the 8, 14, and 6. b.) Find an equation for the potential energy U(x). c.) Verify that x= -1, -1/2, 3/2 are each equilibrium points. d.) Which of the equilibrium points are stable? Which are unstable? Which are neutral? Explain.
Consider Gary's utility function: U(X,Y) = 5XY, where X and Y are two goods. Answer the...
Consider Gary's utility function: U(X,Y) = 5XY, where X and Y are two goods. Answer the following questions: [5 pts. each] a. If Gary consumed 10 units of X and received 250 units of utility, how many units of Y must have Gary consumed? b. Would a bundle of X = 15 and Y = 3 be preferred to the bundle found in a.? Briefly explain.
31. Consider a worker with a utility function given by the equation U =Y , where...
31. Consider a worker with a utility function given by the equation U =Y , where Y is total income and U is the level of utility. Assume the individual receives no nonlabor income. *31a. Suppose that Job A pays $5 per hour and involves working 5 hours per day every day during the year. What is the level of utility the person will attain on a daily basis? What will be the average level of utility attained (per day)...
A mass m moves in a central potential U(r) = −A e^(−kr), where A and k...
A mass m moves in a central potential U(r) = −A e^(−kr), where A and k are positive constants. (a) Sketch the effective potential, and list the types of motion possible (bounded vs. unbounded, stable vs. unstable) and the energy ranges for each. (b) If the particle moves in a circular orbit of radius r0, find its angular momentum L in terms of m, k, A and r0. (c) Find the angular velocity of the circular orbit ωorb in terms...
Suppose that a consumer has the utility function given by: U(x,y)= (x^a)*(y^b) With prices p^x, p^y...
Suppose that a consumer has the utility function given by: U(x,y)= (x^a)*(y^b) With prices p^x, p^y and the income M, and where a>0, b>0. a) Maximize this consumer's utility. Derive Marshallian demand for both goods. b) Show that at the optimum, the share of income spent on each good does not depend on prices or income. c) Show that the elasticity of Marshallian demand for x is constant. d) For good x, use your answers to b) the elasticities of...