{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Ionic eq - Net Ionic Equations with Answers Net Ionic...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Net Ionic Equations with Answers Net Ionic Equations with Answers.doc The directions for the years 1968 through 2006… Give the formulas to show the reactants and the products for the following chemical reactions. Each occurs in aqueous solution unless otherwis indicated. Represent substances in solution as ions if the substance is extensively ionized. Omit formulas for any ions or molecules that are unchanged by the reaction. In all cases a reaction occurs. You need not balance. The directions for the year 2007 and present… For each of the following three reactions, in part (i) write a balanced equation for the reaction and in part (ii) answer the question about the reaction. In part (i), coefficients should be in lowest whole numbers. Assume that solutions are aqueous unless otherwise indicated. Represent substances in solutions as ions if the substances are extensively ionized. Omit formulas for any ions or molecules that are unchanged by the reaction. You may us the empty space at the bottom of the next page fro scratch work, but only equations that are written in the answer boxes provided will be graded. Example: A strip of magnesium metal is added to a solution of silver (I) nitrate. (i) Balanced equation: Mg + 2 Ag + Mg 2+ + a Ag (ii) Which substance is oxidized in the reaction? Mg is oxidized 1968 a) iron(III) ions are reduced by iodide ions. Fe 3+ (aq) + I - (aq) => Fe 2+ (aq) + I 2 [or I 3 - (aq) ] b) hydrogen sulfide is bubbled through a solution of silver nitrate. H 2 S (aq) + Ag + (aq) => Ag 2 S (s) + H + (aq) c) potassium permanganate solution is added to concentrated hydrochloric acid. MnO 4 - (aq) + H + (aq) + Cl - (aq) => Mn 2+ (aq) + Cl 2 (g) + H 2 O d) concentrated (15M) ammonia solution is added in excess to a solution of copper(II) nitrate. NH 3 (aq) + Cu 2+ (aq) => [Cu(NH 3 ) 4 ] 2+ (aq) e) magnesium metal is added to dilute nitric acid, giving as one of the products a compound in which the oxidation number for nitrogen is -3. Mg (s) + NO 3 - (aq) + H + (aq) => Mg 2+ (aq) + NH 4 + (aq) f) excess water is added to solid calcium hydride. CaH 2 (s) + H 2 O => H 2 (g) + Ca 2+ (aq) + OH - (aq) g) excess silver acetate is added to a solution of trisodium phosphate. AgCH 3 COO (s) + PO 4 3- (aq) => CH 3 COO - (aq) +Ag 3 PO 4 (s) [or Ag 2 HPO 4 \ AgH 2 PO 4 ] h) solid sodium cyanide is added to water. NaCN (s) + H 2 O => HCN (aq) + Na + (aq) + OH - (aq) 1969a) solid potassium hydride is added to anhydrous ethyl alcohol. KH (s) + C 2 H 5 OH => K + + C 2 H 5 O - + H 2 (g) b) lithium metal is burned in air. Li (s) + O 2 (g) => Li 2 O (s) \ Li (s) + N 2 (g) => Li 3 N (s) c) aluminum metal is added to a solution of copper(II) chloride. Al (s) + Cu 2+ (aq) => Al 3+ (aq) + Cu (s) d) liquid phosphorus trichloride is poured into a large excess of water. PCl 3 (l) + H 2 O => H 3 PO 3 (aq) + H + (aq) + Cl - (aq) e) manganese(II) nitrate solution is mixed with sodium hydroxide solution. Mn 2+ (aq) + OH - (aq) => Mn(OH) 2 (s)
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
f) equal volumes of dilute equimolar solutions of sodium carbonate and hydrochloric acid are mixed.
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}