Question

* Calcium carbonate Ksp is 3.33x10^-9 *

A certain town gets its water from an underground aquifer that contains water in equilibrium with limestone (calcium carbonate). One resident leaves town of vacation and in the process, leave a cup of water (200mL) on the kitchen table. When he returns, the water has evaporated, leaving only calcium carbonate in the cup.(Hint: you need to the Ksp from the appendix!) a. What is the molar solubility of calcium carbonate in the water? b. How much calcium carbonate in remaining in the cup? c. How much calcium is present in grams. d. For insoluble ionic compounds that contain anions of weak acids, the lower the pH, the higher the solubility. If the residents wants to clean the cup, is he better doing so with an acidic cleaner (like lemon juice) or a basic solution (like soap or baking soda)? (Consider the common ion effect

Answer 1

(42 Ca Cog SxS 3-33 X 10 2. S 33.3 XO CaCo 3 Molarnasi Mass-modメMolay May ST

Maxi of Caco1sy m rrj Then Cleoner uiU be bether Acidic Chemen Ans