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When 90 ml of .10M Fe3+( Ferric or Iron (III) ) is combined to 10 ml of an SCN- (Thiocyanate also known as rhodanide)solution, the equilibrium molar concentration of FeNCS2+, as determined from a calibration curve, = 2.5 x 10^-4 mol/L. find out the eq molar concentration of SCN- in the system.( Kc=[FeNCS2+]/[Fe3+][SCN-] =271.5)
Describe how this observation is consistent with the law of conservation of charge.
The Kal of this aid is 1.0 x 10^-10 and Ka2 is 1.0 x 10^-10. Calculate the concentration of A2- in this solution.
Write the competing equilibrium that will occur when a strong acid is added to the following equilibrium: Ca2+(aq) + C2O4 2-(aq) equlibrium CaC2O4(aq)
should be used to make 2.00 L of 0.0500 M solution? What kind of flask is used to prepare this solution?
If 145.0 mL of 0.350 M lithium hydroxide is required to titrate 35.0 mL of an unknown monoprotic acid, what is the molar concentration of the unknown acid.
If a reaction mixture initially contains 486 of and 261 of , what is the mole fraction of when equilibrium is reached.
Liquid HCN is unstable with respect to trimer formation. What would be the structure of this trimer
a Oxygen is a common oxidizing agent in nature. What changes in the oxidation number of oxygen must occur if it is to be an oxidizing agent? explain
A sample of 2.376 g ether (The compound known as diethyl ether [(C2H5)2O], commonly referred to as ether, contains carbon, hydrogen, and oxygen) was combusted in an oxygen rich environment to produce 2.887 g of H2O (g) and 5.643 g of CO2 (g).
The dipole moment (h-BR) of (a polar covalent molecule) is 0.82 (debye), and its percent ionic character is 12.1. Estimate the bond length of the bond in picometers.
A solution of water (Kf = 1.86 degrees C/m) and glucose freezes at -2.55 degrees C. What is the molal concentration of glucose in this solution? Assume that the freezing point of pure water is 0.00 degrees C. Express the molal concentration numeri..
Celsius is allowed to expand into an evacuated vessel of 2.50 L volume. Does the gas do work? Explain
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