g Sometimes the reaction advances up to the limiting reactant is consumed coal burns and disappears in excess of air yielding CO 2 A C atom reacts with an O molecule both disappear yielding a ID: 1045425
Download Presentation The PPT/PDF document "C(s) + O 2 (g) → CO 2" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
1. C(s) + O2 (g) → CO2 (g)Sometimes the reaction advances up to the limiting reactant is consumed: coal burns and disappears, in excess of air, yielding CO2 A C atom reacts with an O molecule, both disappear yielding a CO2 molecule In general, a mixture of reactants yield a mixture of reactants and products: NaCl (aq.) + AgNO3 (aq.) → AgCl (s) + NaNO3 (aq.)Cl- (aq.) + Ag+ (aq.) ⇄ AgCl (s) In the solution we still may find Cl- (aq.) and Ag+ (aq.) so that, independently of the amount of AgCl (s): [Cl- ] [Ag+]=Kps (constant at a given T) The equilibrium constant Kps changes with T: → we can dissolve PbCl2 in water by just heating
2. ;;
3. Why activity of solids is constant?Equilibrium Introduction of additional CaCO3 has no effects Why heterogeneous reactions can be completed?or
4. AgCl is poorly soluble in water: Ksp = 1.8 × 10−10. Low dissociation in water AgCl (s) Cl- (aq.) + Ag+ (aq.) Table salt (NaCl) has a high Ksp and is quite soluble. High dissociation in water NaCl (s) Cl- (aq.) + Na+ (aq.)HCl is a strong acid, highly dissociated in in water HCl + H2O Cl- (aq.) + H+ (aq.)Acetic acid AcH is a weak acid, poorly dissociated in in water AcH + H2O Ac- (aq.) + H+ (aq.)
5. Dissociation is a chemical reaction with water: HCl + H2O Cl- (aq.) + H+ (aq.)HCl + H2O Cl- + H3O+Acid base base acid Acid: gives a protonBase: accepts a proton
6.
7.
8.
9.
10.