Questions from General Chemistry

Q: Calculate the hydrogen ion concentration and the pH of each of the

Calculate the hydrogen ion concentration and the pH of each of the following solutions of strong acids. a. 1.4 * 10-3 M HClO4 b. 3.0 * 10-5 M HCl c. 5.0 * 10-2 M HNO3 d. 0.0010 M HCl

Q: A 15.0% (by mass) NaCl solution is

A 15.0% (by mass) NaCl solution is available. Determine what mass of the solution should be taken to obtain the following quantities of NaCl. a. 10.0 g b. 25.0 g c. 100.0 g d. 1.00 lb

Q: Calculate the hydrogen ion concentration, in moles per liter, for

Calculate the hydrogen ion concentration, in moles per liter, for solutions with each of the following pH or pOH values. a. pH = 5.41 b. pOH = 12.04 c. pH = 11.91 d. pOH = 3.89

Q: Write the formulas for three combinations of weak acid and salt that

Write the formulas for three combinations of weak acid and salt that would act as buffered solutions. For each of your combinations, write chemical equations showing how the components of the buffered...

Q: Consider 0.25 M solutions of the following salts: NaCl

Consider 0.25 M solutions of the following salts: NaCl, RbOCl, KI, Ba(ClO4)2, and NH4NO3. For each salt, indicate whether the solution is acidic, basic, or neutral.

Q: The three common silver halides (AgCl, AgBr, and AgI

The three common silver halides (AgCl, AgBr, and AgI) are all sparingly soluble salts. Given the values for Ksp for these salts below, calculate the concentration of silver ion, in mol/L, in a saturat...

Q: What does it mean to say that a state of chemical or

What does it mean to say that a state of chemical or physical equilibrium is dynamic?

Q: Approximately 1.5 * 10-3 g of iron(

Approximately 1.5 * 10-3 g of iron(II) hydroxide, Fe(OH)2(s), dissolves per liter of water at 18 °C. Calculate Ksp for Fe(OH)2(s) at this temperature.

Q: Chromium(III) hydroxide dissolves in water only to the extent

Chromium(III) hydroxide dissolves in water only to the extent of 8.21 * 10-5 M at 25 °C. Calculate Ksp for Cr(OH)3 at this temperature.

Q: Approximately 0.14 g of nickel(II) hydroxide,

Approximately 0.14 g of nickel(II) hydroxide, Ni(OH)2(s), dissolves per liter of water at 20 °C. Calculate Ksp for Ni(OH)2(s) at this temperature.