CHM 11100 Lecture Notes - Lecture 21: Lithium Hydroxide, Sodium Hydroxide, Sulfuric Acid
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In solution, all (aq) compounds exist as ions. Ionic equation: pbl2(s) + 2 k+(aq) + 2no3. Cross out anything that did not change. Net ionic equation: pbl2(s) + 2l-(aq) -> pbl2(s) Acid neutralizes base to give salt and water. Acids used this semester: hcl, hbr, hi, hno3, hf,h2so4,ch3cooh. Bases used this semester: metal hydroxides, alkaline group 1 of alkaline group 2, Any reactions that involves oxygen molecules as a reactant and rapidly produces heat and flame. Oxygen combines with another compound to form water and carbon dioxide. A single, uncombined element replaces another in a compound. A+bc -> ac + b or a + bc -> ba + c. These are often called redox reactions red(uction) ox(idation) It"s zero for an atom in an element. Its equal to the charge on a monoatomic ion. It"s -2 for oxygen in everything but peroxides. It"s +1 for hydrogen (except in metal hydrides) Sum of oxidation numbers equals charge on ion.
