When mixing 5.00 mL of an AgNO3 0.0200 molL-1 solution with 20.00 of a solution of NH3 0.540 molL-1, the ag(NH3)2+ complex is forming. The concentration of Ag+ ions in molL-1 after the reaction reaches equilibrium shall be: Data: log β2 = 7.1

supply are just a few of the many tasks that involve controlling the equilibrium between a slightly soluble ionic solid and an aqueous solution of its ions.

In some cases, we want to prevent dissolution from occurring. Tooth decay, for example, occurs when the calcium hydroxylapatite, which has the formula Ca5(PO4)3(OH), in our teeth dissolves. The dissolution process is aided when bacteria in our mouths feast on the sugars in our diets to produce lactic acid, which reacts with the hydroxide ions in the calcium hydroxylapatite. Preventing the dissolution prevents the decay. On the other hand, sometimes we want a substance to dissolve. We want the calcium carbonate in a chewable antacid to dissolve because the CO32−" role="presentation" style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline-table; line-height: 0; text-indent: 0px; text-align: left; text-transform: none; font-style: normal; font-weight: normal; font-size: 21.78px; letter-spacing: normal; overflow-wrap: normal; word-spacing: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; margin: 0px; padding: 1px 0px; position: relative;">CO2−3CO32− ions produced in this process help soothe an upset stomach.

c. is the answer

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