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The solubility of CaCO3 is pH dependent.
B) Use the Kb expression for the CO3^2- ion to determine the equilibrium constant for the reactionCaCO3 (s) + H2O (l) <==> Ca^2+ (aq) + HCO3^- (aq) + OH^- (aq)
C) If we assume that the only sources of Ca^2+, HCO3^-, and OH^- ions are from the dissolution of CaCO3, what is the molar solubility of CaCO3 using the preceding expression?
E) If the pH is buffered at 8.2 (as is historically typical for the ocean), what is the molar solubility of CaCO3?
F) If the pH is buffered at 7.5, what is the molar solubility of CaCO3?
G) How much does this drop in pH increase solubility?
A gaseous mixture of O2 and Kr has a density of 1.192 g/L at 305 torr and 300. K. What is the mole percent O2 in the mixture
What is the boiling point of a mixture composed of 95.0 g HOCH2CH2OH (ethylene glycol) and 205 g H2O? The boiling point elevation constant for H2O is 0.512 °C/m.
A 325-mL sample of solution contains 25.3 g of CaCl2, which is fully dissolved. (a) Calculate the molar concentration of Cl- in this solution. (b) How many grams of Cl- are in 0.100 L of this solution?
What mass of Mg is formed by passing a current of 5.50 A through molten MgCl2 for 2.80 days?
Acid chlorides are used as electrophiles in the Friedel-Crafts reaction to prepare aromatic ketones. The reaction involves the transfer of an aromatic hydrocarbon with an acyl chloride in the presence of a lewis acid
Ethyl chloride vapor decomposes by the first-order reaction C2H5Cl --> C2H4 + HCl The activation energy is 249 kJ/mol and the frequency factor is 1.6 X 10^14 s^-1 The rate constant at 730 K is 2.4 x 10^-4 s^-1. 1)
What volume of a 6.16E-2 M potassium hydroxide solution is required to neutralize 19.8 mL of a 0.107 M hydroiodic acid solution.
Calculate Ka and Original Concentration of Weak Base, You have a solution of a weak base, the pH of which is 10.7532. If 10.000 mL of this solution will neutralize 6.655 mL of 0.07667
Calculate the standard potential for this reaction. Normally, X is Fe. Here it is some unknown metal, allowing for somewhat random values for ΔGo.
Gas x effuses 0.629 times as far as oxygen under the same conditions. what is the molar mass of gas x.
lemon juice has a ph of about 2.5. Assuming that the acidity of lemon juice is due solely to citric acid, that citric acid is a monoprotic acid,
Calculate the mass of silver bromide that will produce 0.023 mol Na3[Ag(S2O3)2].Answer in units of g.
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