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Use Le Châtelier's principle to explain how adjusting the pH enables the control of C2O42- in a solution of oxalic acid, H2C2O4. Select all that apply:
Increasing the pH shifts the equilibrium and increases the concentration of C2O42-.
Increasing the pH shifts the equilibrium and decreases the concentration of C2O42-.
Decreasing the pH shifts the equilibrium and decreases the concentration of C2O42-.
Decreasing the pH shifts the equilibrium and increases the concentration of C2O42-.
Molecular weights can be determined by freezing point depression measurements. A 6.0 g sample of a compound whose empirical formula is (CH2)x is dissolved in 200 g of benzene. The freezing point of the solution is 1.83 C below that of pure benzene..
An "empty" container is not really empty if it contains air. How many moles of nitrogen are in an "empty" two-liter cola bottle at atmospheric pressure and room temperature
an automobile gasoline tank holds 42 kilograms of gasoline. when the gasoline burns 147 kilograms of oxygen are
The indicator dilution method is a technique used to determine flow rates of fluids in channels for which devices like rotameters and orifice meters cannot be used.
A reaction has a standard free energy change of -12.8 kJ mol^-1 (-3.059 kcal mol^-1). Calculate the equilibrium constant for the reaction at 25 degrees celcius.
Which solvents are the best for trimyristin: methanol,, acetone, cyclohexane,, dichloromethane or diethyl ether. How would you rank the solubility of each compound
for the reaction 2a b --gt 2c if b is initially 4.0m and 2min later is 3.0m what is the rate of appearance of
the average distance between mars and earth is about 1.3 108 miles. how long would it take tv pictures transmitted from
how many milliliters of 0.0850 m NaOH are required to titrate each of the following solutions a) 40.0 ml of 0.0900 m HNO3 B)35.0 ml of 0.080 m HC2H3O2 c) 50.0 ml of a solution that contains 1.85 g of HCl per liter.
Calculate the amount of PV work done. c2h4(g)+h2(g)-->c2h6(g) Express your answer using two significant figures. The addition of H2 to C=C double bonds is an important reaction used in the preparation of margarine from vegetable oils.
A given compound has the following solubility properties. At room temperature, it is souble in diethyl ehter but insoluble in both ethanol and water At high temperatures,
Calculate the maximum non-expansion work that can be done on the surroundings from the combustion per kilogram of H2(g) at constant pressure and 298.15K. If the H2 is oxidized in a fuel cell with maximum efficiency to drive an electric version
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