Acid –Base Titration: A volume of 128 mL of 0.650 M Ba(OH)2 was required to completely neutralize 50.0 mL of nitric acid solution (HNO3). What is the concentration of the acid solution? Gravimetric Titration: Calculate the molar concentration of Ba2+ ions in a 500.0 mL sample of an unknown aqueous solution if 2.47 g BaSO4 is formed upon the addition of excess Na2SO4? Stoichiometry of Acid –Base Reactions: What volume of 0.800 M HCl is required to completely neutralize 35.0 g of Ca(OH)2
Premium Concentration Chemistry Ammonia
Determining activation energy (Ea) of a reaction © KCl http://hk.geocities.com/fatherofchemistry Objective To determine the activation energy for the reduction of peroxodisulphate(VI) ions. S2O82-‚ by iodide ions I-‚ using a ’clock’ reaction. Principle The equation for reduction of S2O82- by I- is: S2O82- + 2I- → 2SO42- + I2 The formation of iodine is ’monitored’ by small & known amount of thiosulphate ions‚ S2O32-:
Free Chemical reaction Chemical kinetics Reaction rate
n this lab‚ everyone got a flask which we then drew a pumpkin face on. Then we mixed 42 mL sodium hydroxide solution‚ 10 g of glucose‚ 1 mL‚ 1 L of water and Methylene blue solution and leave it undisturbed. The blue solution turned clear and when we added the yellow food coloring it turned an orange color. The solution then turned dark blue once the solution was shaken vigorously. This reaction occurred because the oxygen oxidized the methylene blue.In the oxidized state the methylene blue shows
Premium Chemistry Color Base
• The reactions of the citric acid cycle include two other oxidative decarboxylation‚ which transform citrate into succinate. • The cycle is complete by regenaration of oxaloacetate from succinate in a multistep process that includes two other oxidation reactions. Pyruvate + 4NAD+ + FAD + GDP + Pi + 2H2O 3CO2 + 4NADH + FADH2 + GTP + 4H+ • The cycle is strongly exergonic. Pyruvate is Converted to Acetyl-CoA Pyruvate dehydrogenase complex is responsible for the conversion of pyruvate
Premium Citric acid cycle Metabolism
mutate the bacteria without microsomal activation though‚ the bacteria contains nitro reductases which activate them. Many hair dye components such as‚ pphenylenediamine‚ 2‚5diaminotoluene‚ and 2‚5diaminoanisole become strongly mutagenic after oxidation by H2O2 gives a very strong mutagenic response with strain when sulfur is present‚ which is located in the hair. As mentioned before‚ it can be hard to know what the results of these studies mean‚ due to many other factors that might affect the
Premium Dye Color English-language films
amount of ATP is used to a low level of activity‚ with only a small amount being used. The ATP in the muscle fibres is enough to allow muscle contractions for a few seconds. When muscle contraction continues more ATP is needed. Aerobic glycolysis Oxidation of glucose requires a different enzyme and a coenzyme for each step. Coenzyme A is used at this stage in cellular respiration‚ which is derived from from a B vitamin called pantothenic acid. During the transitional between glycolysis and the Krebs
Premium Adenosine triphosphate Metabolism Muscle
Compiled SCH4U Course Review Unit 1: Atomic Structure and Bonding Section 3.3 Electron Configurations and Periodic Trends (pg. 139-157) Feb. 11 For single electron system all orbitals with the same value of have the same energy Atoms with more than 1 electron with the same value of n have different energies (sublevels) Because of interactions between additional electrons All orbitals within a sublevel have the same energy The Fourth Quantum Number: A property of the electron (spin quantum
Premium Electron configuration Chemical bond Energy
similar result. Frielander‚ Casazza‚ Horning‚ Buddinger‚ and Brooks (1998) executed a similar experiment where females exercised for an hour at 45 and 65% of their VO2 max and the results showed that at the first fifteen minutes of exercise the fat oxidation decreased‚ an increase in CHO metabolism‚ and the blood glucose concentration decreased. In our
Premium Metabolism Nutrition Fat
= ___7___ # of Electrons in the valence shell? __5___ 8. Identify the following as synthesis‚ decomposition or exchange reaction a. 2HG + O2 = 2HgO _______synthesis_______ b. Fe2+ + CuSO4 = FeSO4 + Cu2+_______exchange reaction______ c. HNO3= H++ NO3- ________decomposition________ 9. Explain the basis of Ionic bonding. Give an example. They are made up of cations and anions. 10. Explain the basis of Covalent bonding. Give an Example A covalent bond is a chemical bond that
Free Atom Electron
theoretical oxygen demands for sodium acetate =0.024 x (16x2) =0.768 g oxygen/g sodium acetate 3. What percent of oxidation of glucose is obtained in the COD test ? (3marks) The experimental COD (mg/l)value for glucose =[(24.85-19.90)x0.1002 x8000]/20.00 = 198.396mg/l Oxygen demand of glucose =(198.396/1000)/(300/1000) = 0.661g oxygen/g glucose Percent of oxidation of glucose =[(0.661 g oxygen/g glucose)/(1.067g oxygen/g glucose)]x100% =61.95% 4. Explain‚ qualitatively‚ the
Premium Chemical oxygen demand Acetic acid Carbon