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If a solution of hydroxylamine/ hydroxylammonium buffer contains 0.117 M NH2OH, Compute the morality of HONH3Cl required if the solution is to have a pH of 4.76.
NH2OH(aq) + H2O(l) = HONH3+(aq) + OH-(aq)
ConstantKw=10-14
Kb=1.10×10-8
Compute the amount of heat evolved in the oxidation of 32.0 grams of Fe at the temperature 25 oC and pressure 1 atm pressure ( ΔHfo(Fe 2 O 3 ,s) = -824kJ/mol)
Calculate the pH of a solution that is 1.00 M HNO2 and 1.00 M NANO2
A.E. Dyer supplied 45.9 cal of heat energy to a 156-g piece of aluminum block that was kept at 28 degree C. What is the final temperature of the aluminum block?
0.035 moles of SO2, 0.500 moles of SO2Cl2, and 0.080 moles of Cl2 are combined in an evacuated 5.00 L flask and heated to 100 oC. What is Q before the reaction begins. Which direction will the reaction proceed in order to establish equilibrium.
If 100.0 grams of sugar glucose (M.W.=180.0 g/mol) is added to 300.0 grams of water, and the sugar dissolved, what will be mole fraction of glucose in the solution and what will be the freezing point of the solution
two previously undeformed cylindrical specimens of brass are to be strain hardened by reducing their cross-sectional
Calculate the delta Hrxn for the following equation- 4KNO3(s) - - > 2K2O(s) + 2N2(g) + 5O2(g)
calculate the change in pH that occurs when 1.00 mmol of a strong acid is added to 100 mL of 0.0500 M CH3COOH
Calculate the concentration of Ca2 at V = 1/2 Ve. (d) Calculate the concentration of Ca2 at V = Ve. (e) Calculate the concentration of Ca2 at V = 1.1 Ve.
You were given an unknown which gave precipiates with all four test solutions, 1 M H2SO4, 0.25 M (NH4)2C2O4, 1M K2CrO4 and 1M CH3COOH and 1M Na2CO3. Which of the four groups IIA metal cations are deffinitely absent from your unknown?
Suggest a reasonable synthetic strategy for the synthesis of 3,5-dinitrobenzyl alcohol from benzaldehyde.
the Standard Gibbs energy change associated with this oxidation reaction is ca. 0. kJ/g.
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