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We were given concentration and volume of a weak acid and were asked to determine dissociation constant of weak acid, in second question we were asked to find concentration of each species in soluti
We were given standard reduction potentials and were asked to find standard reduction potential for the half-reaction.
Examine the meaning of pH and [H+], the pH scale and why you're chosen substance is acidic. Use scientific notation or enough decimal places so that your answer has at least 3 place values. For exam
We were given mass and volume and we were asked to find limiting reactant, in second question we were asked to find percent by mass of oxygen in CaCO3.
An isotope of Gd has a half life of 25 minutes. How long would you have to wait for eight half lives to pass.
What is the pH of a solution of 0.81 M acid and 0.35 M of its conjugate base if the ionization Constant is 5.45 x 10-8.
What is the pH of the solution at the points where 24.5 and 25.5 mL of NaOH have been added? (Ka = 1.8 x 10-5)
What is the concentration (M) of Mg2+ when MgC2O4 (Ksp = 8.5 x 10-5) begins to precipitate from a solution that is 0.020.
Which of the following when dissolved in water has the highest concentration of magnesium ion.
Which of the following when dissolved in water has the highest concentration of barium ion.
What is the concentration of Cu2+ in a solution that is 0.10 M Cu(NH3)42+? (Kf = 1.2 x 1012)
What is the hydronium ion concentration of a solution of 0.720 M acid and 0.240 M of its conjugate base if the ionization constant is 4.38 x 10-6.
What is the hydronium ion concentration of a solution of 0.700 M acid and 0.440 M of its conjugate base if the ionization constant is 3.59 x 10-8.
The point at which an acid has completely reacted with or been neutralized by the base is known as the.
A 25.00 mL sample of 0.100 M CH3CO2H is titrated with 0.100 M NaOH. What is the pH of the solution at the points where 25.0 and 25.5 mL of NaOH have been added. (Ka = 1.8 x 10-5).
From the following Ho and So values predict which of reactions I, II, and III would be spontaneous at 25ºC.
The enthalpy and entropy change of a reaction are -26.1 kJ/mole and +3.89 J/mole K correspondingly at 25ºC. What is the free energy change in kJ/mole.
Nitrosyl chloride decomposes by the following reaction with Hº = -51.7 kJ/mole and Sº = 48.2 J/mole.K.
Write down the electron configuration beyond a noble gas core (e.g., F-: [He]2s22p6) and give multiplicity for the following elements: Cr2+, Pt, Ge-, Er3+, Fe2-, Xe2+.
Using this new approach, apply Slater's rules to calculate the binding energy of the 2s electron in iron. Does the new energy agree better with experiment.
For a given alkali metal, how does the ionic radius of the alkalide ion compare to that of the neutral alkali metal atom? Explain using physical arguments.
Heavy water and graphite are two examples of materials that are can be used in a nuclear reactor to slow down neutrons. These materials are called.
An electron emitted from the nucleus during some kinds of radioactive decay is known as.
Which nuclide is a radioisotope used in the study of organic reaction mechanisms.
Magnesium-28 decays via beta emission, which equation represents the balanced nuclear equation.