A fictional weak base, ZaH2, reacts with water to yield a solution with an OH– ion concentration of 2.68 × 10–4 mol/L. The chemical equation for the reaction is ZaH2(aq) + H2O(l) ⇌ ZaH3+(aq) + OH–(aq). If [ZaH2] at equilibrium is 0.0997 mol/L, what is the value of Kb for ZaH2?

Although the rocks of the produced by similar processes but their chemical composition may vary dependent upon the type of mineral present in these rocks so the color of the rock also varies depending upon the mineral composition.

Explanation:

The rocks are made by basic steps like disintegration of parent rock material, erosion, crystallization, metamorphism, and sedimentation. These basic steps are common in same kind of rocks but their color may vary because of the mineral composition in them for example, Rhyolite is of light colored because of the presence of quartz mineral present in it.