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Question - Methylene blue is reduced by the ascorbic acid and, as that occurs the methylene blue is converted into the colorless H2MB+ compound. We used this bleaching to measure the reaction rate. Write the ½ reaction for the reduction of methylene blue. Use the standard reduction potential for methylene blue (100 mV) to explain whether or not dissolved oxygen (in the reactant solutions) affects the results of this experiment. Be sure to write all ½ reactions involved.
Please perform what you can and illustrate your work so I can follow. Thanks
Draw a heating curve (qualitative) starting with ice at -20 degrees C going to steam at 200 degrees C. Indicate the solid, liquid, and gas states, and the melting and boiling points.
assume that an astronaut's energy comes from burning glucose(c6h12o6). write 3 equations (including delta H values that represent the heats of formation for each C6H12O6, H20 and CO2.
1.3 Kg of Ethane gas (C2H6 ) was heated from 27.0 degree Celsius to 78.0 degree Celsius. Calculate delta E at constant pressure. ( Cp= 52.92 j / K mol)
The overall reaction for the corrosion of iron by oxygen is given by the following reaction. 4Fe (s) + 3O2 (g) ?? 2Fe2O3 (s) Compound ?H° (kJ/mol) S° (J/mol K) Fe (s) 0 27 O2 (g) 0 205 Fe2O3 (s) -826 90 Calculate the equilibrium constant, Keq, for..
15.0 mL of 0.50 M HCl is added to a 100.-mL sample of 0.496 M HNO2 (Ka for HNO2 = 4.0 × 10-4). What is the equilibrium concentration of NO2- ions?
Calculate molar absorbancy of PAP if its diluted solution has an A280 =0.272.The cuvette's width is 1 cm.
Write any assumptions you make. Calculate the total work of this expansion. If this expansion were reversible, what would the value be?
A 2.55 g sample of naphthalene (C10H8) is dissolved in a 30.0 g of benzene (C6H6). Benzene freezes at 5.50 degrees C and the resulting solution freezes at 2.13 degrees C. What is the freezing point depression constant, K sub f, of benzene?
From the subsequent data for the first order gas phaseisomerization of CH3NC at 215 degree Celsius, compute the first order rate constant and half life for the reaction
The metal rhodium has an FCC crystal structure. If the angle of diffraction for the (311) set of planes occurs at 36.12° (first-order reflection) when monochromatic x-radiation having a wavelength of 0.0711 nm is used
If 2 x 10-4 moles of S2O8 ^2- in 50 mL of solution is consumed in 188 seconds, what is the rate of consumption of S2O8^2-?
Confirm using calculations that the following dilutions will produce 100 ml of 0.025 M acetic acid. Measure out 1.00mL of 17.4 M solution. Dilute this to 50 mL, take 7.2 mL of this solution and dilute it to 100 mL.
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