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UT CH 302 - CH302 Random Musings
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CH302 Random Musings February 23, 2006 1. Things are running entirely too smoothly in this class. Quiz and exam scores are well above average, help sessions and office hours are well attended, people are making appointments to see me about improving test scores, lecture notes are written and posted on time, worksheets and answer keys are going up, people are contacting Alexis instead of me about grading issues. I even think I know what I am talking about during lectures. I don’t know what to complain about in the musings. Wait, I know, you don’t send enough pubic service announcements to me to put in the musings. I knew there was something that was really bothering me. 2. The quiz was postponed till next Thursday. The material to be covered is of the following question types: • Strong acid or base calculation • Weak acid or base calculation • Identifying acid and base strength • Identifying acid/base type based on theories • Identifying conjugate acid base pairs • Identifying buffer solutions • Calculating solubility product from Ksp • Calculating simple buffers 3. For those of you wanting to know where we are in the vast waste land of aqueous equilibria: • The first quiz will cover simple equilibria. Simple equilibrium problems aren’t simple, actually they are calculations in which a single equilibrium constant is used to determine an equilibrium concentration. As we will learn these cases occur when we have K values that are far apart in magnitude and when the analytical (initial) concentrations are high. These are the problem types we will see on the first quiz. • The second quiz will continue to look at simple equilibria but for more intricate problem types including polyprotic acid systems, neutralizations reactions and titrations curves. Calculations will still be simple but it will take a lot of steps to get to the final answer. We will also examine why it is we have been getting away with these approximations that have let you get away with using equations you can solve in your head. • When you return from Spring Break I will lay the heavy duty “Engineering-friendly” equilibria on you in which we examine complex equilibria, which are system in which the approximations break down and we have no choice but to build equations that have more than one equilibrium constant in them. Some of you will think this is the greatest thing ever. Others, not so happy. And then we take an exam and are done with water chemistry. 4. Have I made it more than abundantly clear that the reason people miss acid base problems is not the math but rather the inability to discern acids from bases and strong from weak. If you can learn to turn all of the acids and bases in the world into a collection of H+, OH-, HA, A-, B, and BH+ values, this material before Spring Break will be a walk in the park. 5. Worksheet 6 will be ready on Sunday. It will cover the material for quiz 4 including neutralization reactions, titration curves, polyprotic acid equilibria and an assessment of when approximations are appropriate. Minhtran will remember to keep all the concentration high and all the K values far apart so that calculations are simple cases, but I can tell she is chomping at the bit to create problems that are low concentration and closely spaced Ks for you to work over spring break. 6. Remember, when a quiz comes about, to the classrooms you should turn out. My help sessions next week will be in the lecture halls.7. Public Service Announcements. None. Sigh. 8. Poetry Corner. Last week’s musings were a bit over the top with all the unabashed love. So to even things out, let’s look at the darker and more cynical side of love. I meant to ask you all to provide some hate poetry, but was scared off by what you did last week and instead offer a couple poems from last year’s class plus a some famous poetry on the subject. -an angry CH302 student Valentines Day Personal sentiment, hand to hand held, Kisses and hugs (because sensitive sells), Roses and cards we will send, Though it’s all about sex in the end, But if he gets what he wants all is well. She wants to think that she knows what she needs, Showered with words, wowed with gestures and deeds, That smack of love unceasing; Naught but unknowingly increasing The stock value of chocolate companies. It will end in decay, just like always, the same; Like severed plant genitals—what’s in a name? Your love’s a faux, an ideal A trick, dance, war, dross, joy, plot, shell, a spiel, We just want sex, don’t make it a game. -an angry CH302 student A dove is a glove That I wear in my heart And though I like to dress smart It doesn’t have any part of the world of fashion And you’re there to put me down And I’m sick off the frowns that follow me around I would like the sky but there’s no reason why Shed say to this world with the nose of a girl Turned up so loud that IT SINGS STEALS THE CLOUDS I’ve never been here and though you’re physically near You’re pushing me away to decay like the days that I loved There is a girl blabbing nothing outside my window What do I have to show To a world that the only way to destroy Is to die like a baby boy I could be happy in infinity Of the space of my eyelid But I know I’m somewhere else Where the words on this page Are better than the scribbling nonsense they are And it would be real, And I eat my last meal Wish that I could feel But now I don‚t even know if I’m real From a girl's bathroom at Burdine Hall By the time you swear you're his Shivering and Sighing And he vows his passion is Infinite -- Undying Lady make a note of this One of you is lying You Left Me by Emily Dickinson You left me, sweet, two legacies,- A legacy of love A Heavenly Father would content, Had He the offer of; You left me boundaries of pain Capacious as the sea, Between eternity and time, Your consciousness and me. Music, When Soft Voices Die by Percy Shelley Music, when soft voices die, Vibrates in the memory— Odours, when sweet violets sicken, Live within the sense they quicken. Rose leaves, when the rose is dead, Are heap'd for the beloved's bed; And so thy thoughts when thou are gone, Love itself shall slumber on. Proud of My Broken Heart by Emily Dickinson Proud of my broken heart, since thou didst break it. Proud of the pain, I did not feel 'till thee. Proud of my night, since thou, with moons, dos't shake it. Not to


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UT CH 302 - CH302 Random Musings

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