The symbol (aq) is used after a chemical formula in an equation to indicate that the substance is in aqueous solution, meaning it is dissolved in water.
The symbol used in a chemical equation for an aqueous solution is (aq) to indicate that a substance is dissolved in water. This symbol is placed next to the chemical formula of the dissolved substance.
Aqua regis (Latin: water of king) is the triviale name of the 3:1-mixture of concentrated hydrochloric acid (HCl) and nitric acid (HNO3), capable of dissolving (by oxidation) of gold, the King of metals.The first step reaction (oxidation) will only go further when followed by the 2nd step of complex forming to the tetrachloroauraat ion AuCl4-, because too much Au3+will stop the oxidation.Au(s) + 3 NO3-(aq) + 6 H+(aq) → Au3+(aq) + 3 NO2(g) + 3 H2O(l)Au3+(aq) + 4 Cl-(aq) → AuCl4-(aq)
Cu(s) | Cu2+(aq) K+(aq) | K(s)-3.27Zn(s) | Zn2+(aq) Na+(aq) | Na(s)-1.95
HCN(aq) ==> H^+(aq) + CN^-(aq)Ka = [H+][CN-]/[HCN] and the value can be looked up in a book or on line.
Barium chloride and sodium sulfate Molecular equation: BaCl2(aq) + Na2SO4(aq)--> BaSO4(s) + 2NaCl(aq) ionic equation: Ba+2(aq) + 2Cl-(aq) + 2Na+(aq) + SO4-2(aq) --> BaSO4(s) + 2Na+(aq) + 2Cl-(aq) Net ionic equation is Ba+2(aq) + SO4-2(aq) --> BaSO4(s)
The symbol used in a chemical equation for an aqueous solution is (aq) to indicate that a substance is dissolved in water. This symbol is placed next to the chemical formula of the dissolved substance.
Zn(s) -> Zn2+(aq) + 2e- and Fe3+(aq) + e- -> Fe2+(aq)
Aqua regis (Latin: water of king) is the triviale name of the 3:1-mixture of concentrated hydrochloric acid (HCl) and nitric acid (HNO3), capable of dissolving (by oxidation) of gold, the King of metals.The first step reaction (oxidation) will only go further when followed by the 2nd step of complex forming to the tetrachloroauraat ion AuCl4-, because too much Au3+will stop the oxidation.Au(s) + 3 NO3-(aq) + 6 H+(aq) → Au3+(aq) + 3 NO2(g) + 3 H2O(l)Au3+(aq) + 4 Cl-(aq) → AuCl4-(aq)
Zn(s) → Zn2+(aq) + 2e- and Fe3+(aq) + e- → Fe2+(aq)
Na+(aq) + OH-(aq) + H+(aq) + Cl-(aq) -> H2O(l) + Na+(aq) + Cl-(aq)
The symbol used in a chemical equation for a substance dissolved in water is "(aq)", which stands for "aqueous".
Testing for Iodide, I-Sodium iodide, NaI, is the source of iodide anion for this experiment.Reaction with bleach involves three steps. The brown color shows the presence of I3- ions.Hypochlorite ion yields chlorine:OCl- (aq) + Cl- (aq) + H2OCl2 (aq) + 2 OH-Chlorine reacts with iodide anion:Cl2 (aq) + 2 I- (aq)I2 (aq) + 2 Cl- (aq)Triiodide ion is formed:I2 (aq) + I- (aq) I3- (aq)Starch reacts with iodine and iodide to form a characteristic blue/black complex. A corn starch packing peanut is shown here.Silver ion reacts with iodide to form silver iodide, AgI.Ag+ (aq) + I- (aq) AgI (s)Reaction of iodide with sulfuric acid produces hydrogen sulfide gas and brown triiodide solution in a series of reactions:I- (aq) + H2SO4 (aq) HI (aq) + HSO4- (aq)8 HI + H2SO4 (aq) H2S (g) + 4 I2 (aq) + 4 H2OI2 (aq) + I- (aq) I3- (aq)Again, starch is used to confirm the presence of iodine and iodide.
Molecular Eq HC2H3O2(aq) + NH3(aq) -> NH4+(aq) + C2H3O2-(aq) Ionic Eq H+(aq) + C2H3O2-(aq) + NH3(aq) -> NH4+(aq) + C2H3O2-(aq) Net Ionic Eq H+(aq) + NH3(aq) -> NH4+(aq)
Mg(NO3)2(aq) + H2SO4(aq) ==> MgSO4(aq) + 2HNO3(aq) Complete molecular equationTotal ionic equation:Mg^2+(aq) + 2NO3^-(aq) + 2H^+(aq) + SO4^2-(aq) => Mg^2+(aq) + SO4^2-(aq) + 2H^+(aq) + 2NO3^-(aq)RESULT - NO REACTION
(aq)
NaCl(aq) + AgNO3(aq) → AgCl(s) + NaNO3(aq) KOH(aq) + HCl(aq) → KCl(aq) + H2O(l) Pb(NO3)2(aq) + KI(aq) → PbI2(s) + KNO3(aq) BaCl2(aq) + Na2SO4(aq) → BaSO4(s) + 2NaCl(aq) H2SO4(aq) + 2NaOH(aq) → Na2SO4(aq) + 2H2O(l)
2Na+(aq) + SO42-(aq) + Ca2+(aq) + 2Cl-(aq) CaSO4(s) + 2Na+(aq) + 2Cl-(aq)