Melissa Carrithers AP Chemistry period 6 2-11-15 Determination of Ka of Weak Acids Purpose: The purpose of this lab is to find the strength of weak acids by determining the equilibrium constants for their ionization reactions in water. Is to use their measured pH values to calculate the pKa for the two unknown weak acids thus determining their identities. Hypothesis: If we neutralize a solution that contains a weak acid by adding a strong base to the solution‚ then the ions will be isolated and
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plate. Each well was coated with 200 µL of 1mg/L anti-mouse IgG in PBS (phosphate buffered saline‚ 10 mM sodium dihydrogen phosphate‚ 70 mM sodium hydrogen phosphate‚ 145 mM sodium chloride‚ pH 7.6). The microtiter plate was left over night for shaking at 750 rpm. Therefore‚ the plate was washed three times with automatic 96-channel plate washer by washing buffer (45 M potassium dihydrogen orthophosphate‚ 0‚375 mM dipotassium phosphate. 1.5 M Potassium sorbate‚ Tween 20‚ pH 7.6). Afterwards‚ 200µL
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Ionic Charge: Oxyanions that Contain Hydrogen: HCO3– bicarbonate ion or hydrogen carbonate ion HSO4– bisulfate ion or hydrogen sulfate ion NO3– NO2– nitrate ion nitrite ion MnO4– permanganate ion H2PO4– Others: CN– dihydrogen phosphate ion cyanide ion OH– hydroxide ion SCN– thiocyanate ion C2H3O2– acetate ion (Often written as CH3COO–) -2 Oxyanions: CO32– carbonate ion SO42– SO32– sulfate ion sulfite ion CrO42– Cr2O72– C2O42– S2O32–
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experiment. The factor that will affect our stomatal density will be the closer leaves are to a water source the less the stomatal density will be due to less continuation of the opening and closing of stomata to take in carbon dioxide and release dihydrogen oxide and dioxide. All else being equal‚ we hypothesize that within a species‚ a plant leaf should develop so that its stomatal density is greater in the wet environment and less in the dry environment because the plants by the creek have a constant
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CHEM 208 Module 2: List the steps of the scientific method: Scientific Method: performing a study in organized step: (led to enunciation of Law of Conversation of Mass and Matter) 1. Performing experiments: a. An experiment is a set of steps (procedures) that are performed under controlled
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gases Acknowledging these facts‚ many are very concerned with the condition of the Earth ’s atmospheric gases in the future. In just a very short time‚ scientists produced a new vehicle which only emits water out of its exhaust rather than carbon monoxide and other toxic pollutants in modern day internal combustion engines. The Hydrogen automobiles do not require gasoline or ethanol to function‚ but all they require in Hydrogen. As the name entails‚ Hydrogen automobiles use Hydrogen as its main source
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are polymers that can biodegrade within a living organism without causing harmful effects. Biomaterials are largely utilized in medical applications that undergo degradation by the chemical breakdown of the biomaterial with the reaction of dihydrogen monoxide. This process is also known as chemical hydrolysis (Fergade). The criterion for selecting a polymer for use as a biomaterial is to match the physical and mechanical characteristics with the time it takes the polymer to degrade. In addition
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One is called catalytic hydrogenation which can be used to reduce pi bonds in many functional groups. This is achieved by adding dihydrogen along with a metal catalyst (e.g. Nickel‚ platinum‚ palladium‚ or rhodium) to a compound with a double or triple bond. The metal catalysts have different properties and there are different functional groups that each can reduce. Catalytic hydrogenation
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Dictionary of chemical formulas From Wikipedia‚ the free encyclopedia This is a list of chemical compounds with chemical formulas and CAS numbers‚ indexed by formula. This complements alternative listings to be found at list of inorganic compounds‚ list of organic compounds and inorganic compounds by element. Table of contents: A B C Ca-Cu D E F G H I K L M N O P R S T U V W X Y Z & [edit] Tables to be merged Inorganic: A B Ca-Cu G H I L M N O P S Organic: C C2 C3 C4 C5 C6 C7
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Chemical Formulas Review: Nomenclature and Formula Writing Naming Simple Compounds There are four naming systems you should familiarize yourself with to succeed on the SAT II Chemistry exam. The trick is recognizing which naming system to use. Here are the guidelines: * If the compound starts with H‚ it is an acid. Use the naming acids rules. * If the compound starts with C and contains quite a few H’s and perhaps some O’s‚ it is organic. Use the naming organic compounds rules. *
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