Calcium hydroxide is used in leather tanning to remove hair…

Calcium hydroxide is used in leather tanning to remove hair from hides. For a 0.005 M solution of Ca(OH)2, calculate: [H3O+]=[1] (use scientific notation and no spaces. E.g., write 1.0e-6 for 1.0×10^-6) pH=[2] (use 3 digits to the right of the decimal), [OH–]=[3] (use 3 digits to the right of the decimal), pOH=[4] (use 3 digits to the right of the decimal).

Consider the reaction: A(g) ⇄ B(g), ∆H = −20 kJ. A reaction…

Consider the reaction: A(g) ⇄ B(g), ∆H = −20 kJ. A reaction vessel at 25°C initially contains 1.0 M A. When equilibrium is reached, the concentration of B is 0.33 M. Then, the temperature is increased to 50°C. What is the concentration of A when the system re-attains equilibrium at 50°C?

The following reaction is at equilibrium at one atmosphere,…

The following reaction is at equilibrium at one atmosphere, in a closed container.   NaOH(s)   +   CO2(g)    ⇌   NaHCO3(s)     ∆H < 0     Which of the following will shift the equilibrium towards reactants?  (You must select ALL of the correct answers and NO incorrect answers in order to receive full credit)