Organic liquids or solutions Weak acids and alkalis Strong acids‚ alkalis and salt solutions ethanol C2H5OH tetrachloromethane CCl4 trichloromethane CHCl3 pure water H2O sugar solution C12H22O11 molten sulphur S limewater Ca(OH)2 ammonia solution NH3 aqueous ethanonoic acid CH3COOH aqueous sulphurous acid H2SO3 aqueous carbonic acid H2CO3 aqueous sulphuric acid H2SO4 aquous nitric acid HNO3 aquous hydrochloric acid HCl aqueous potassium hydroxide KOH aqueous
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positive or negative charge that break apart in water to form a hydrogen ion. (H+) 10. What does it mean if a solution has more hydrogen ions (H+)? a. More acidic the solution is 11. What does it mean if a solution has more hydroxide ions (OH-)? a. Basic 12. What does it mean if a solution is neutral? a. The concentration of hydronium equals the concentration of hydroxide ions. 13. Explain the pH scale and how it is used to indicate acidic‚ alkaline‚ and neutral solutions.
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00815 C14H14O2 86.22 138-139 Compound C 0.4255 0.001988 C14H14O2 40.02 136-138 Spectral Analysis IR Absorption (cm-1) Assignment Benzoin 3411‚ 3374 OH 2961‚ 2903 C-H aromatic 2358 C-O 1678 Ketone Compound A 3372 OH stretch 3310 OH stretch 3085‚ 3060‚ 3030 C-H stretch 2900 C-H aromatic 1451 OH bend Compound B 3371‚ 3309 C-H 2900‚ 2855 C-H stretch‚ methyl 1451 Ar C=C 1278 Acetal 1H NMR Chemical shift (δ) Multiplicity and Integration
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Yes the fresh air‚ what a beautiful day. Man look at all these people putting a cover on trying to pretend everything in this world is alright. Cry show your stupid emotions. My mother can’t be the only one dying. Oh no oh no don’t leave hey what the fuck stupid bus driver. Are you kidding me‚ last thing I need is my boss up my ass. Calm down calm down after today you won’t need this job as long as you get that money. Man I need this money. Ugh finally another bus
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which these antacids neutralize the HCl in stomach acid. Compound Chemical Formula Chemical Reaction Aluminum hydroxide Al(OH)3 Al(OH)3(s) + 3 HCl(aq) -----> AlCl3(aq) + 3 H2O(l) Calcium carbonate CaCO3 CaCO3(s) + 2 HCl(aq) -----> CaCl2(aq) + H2O(l) + CO2(g) Magnesium carbonate MgCO3 MgCO3(s) + 2 HCl(aq) -----> MgCl2(aq) + H2O(l) + CO2(g) Magnesium hydroxide Mg(OH)2 Mg(OH)2(s) + 2 HCl(aq) -----> MgCl2(aq) + 2 H2O(l) Sodium bicarbonate NaHCO3 NaHCO3(aq) + HCl(aq) -----> NaCl(aq) + H2O(l) + CO2(g)
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Chem 1212L-345 Lab report Experiment #20: Temperature Change and equilibrium Woochul Jin Jeeyoon Kong‚ Alla Asmerom Hagos 03/22/2011 Woochul Jin Chem 1212L-345 Experiment #20 Lab Report Temperature change and equilibrium Introduction: In this experiment‚ we will find out how the variation of the value of an equilibrium constant with temperature can be used to determine the enthalpy (heat)‚ entropy (randomness)‚ and free energy (G) changes associated with the system in question
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later everyone shows up dressed and pockets and purses loaded for a great night. “Steph you look amazing. Adam oh my gosh any cuter and you beat my dog in a handsome contest. Ralphie always with the casual look. Madi wow what can I say pulling out all the stops tonight.” I grabbed Adam’s arm and walked out to the limo. We drove for maybe an hour through dense traffic and heavy rain. “Oh no this is going to like ruin my hair‚” Steph complained. “Steph don’t worry it’s going to be fine‚” Ralphie assured
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Hi Jenny! You’re looking very upset. What’s wrong? Hi! Oh‚ you do know that my mom and dad are going to divorce. No‚ I don’t. I’m very sad to hear it. But take it easy! Unfortunately‚ but about a half of American marriages are expected to end in divorce. Have you decided already with whom of your parents you’re going to live together? Oh‚ it’s such a difficult decision. I need to choose who is more important for me from my parents. Yes‚ a family unit is in the crisis. The divorce rate
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M10/4/CHEMI/HP2/ENG/TZ1/XX/M+ MARKSCHEME May 2010 CHEMISTRY Higher Level Paper 2 18 pages –2– M10/4/CHEMI/HP2/ENG/TZ1/XX/M+ This markscheme is confidential and for the exclusive use of examiners in this examination session. It is the property of the International Baccalaureate and must not be reproduced or distributed to any other person without the authorization of IB Cardiff. –5– Subject Details: M10/4/CHEMI/HP2/ENG/TZ1/XX/M+ Chemistry HL Paper 2 Markscheme
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Group A8 group memebers: Question 1 HowCan Pte Ltd enters into a contract of sale with Panda Ltd in China for the sale of perishable goods‚ F.O.B (free on board: i.e. buyer has to make the shipping and other arrangements). Howcan Pte Ltd then gets SureCan Pte Ltd to transport perishable goods from China to Singapore. The ship is supposed to transit via Vietnam. The goods are shipped out of China‚ but due to improper planning on the part of SureCan Pte Ltd‚ they are wrongly dispatched
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