Chemical equation for iron

Ions to Formulae and Equations Ions to formulaeIn the correct formula of a compound the charges on the ion must cancel out. Using the ion table attachedand the set of rule cards below the excercises,you can turn the name of a compound into its formula.Start with the name :-sodium chlorideiron IIIoxidelithiumsulphatewrite in the ions:-balance the charges:-write the formula:-Cheats Method :-sodium chlorideiron IIIoxidelithiumsulphatewrite in the ions:-swap the numbers :-cancel down :-Useeither method to find the formulae of the following compounds.Exercise 1a.Sodium fluorideg.Magnesium chlorideb.Lithium iodideh.Sodium sulphidec.Magnesium sulphidei.Aluminium iodided.Calcium oxidej.Lithium nitridee.Aluminium nitridek.Magnesium nitridef.Iron (III) phosphidel.Aluminium oxideExercise 2a.Potassium nitrateg.Iron(II) sulphateb.Sodium hydroxideh.Hydrogen chloridec.Magnesium sulphatei.Silver nitrated.Calcium carbonatej.Sodium hydrogencarbonatee.Aluminium phosphatek.Lead (II) carbonatef.Ammonium chloridel.Ammonium hydroxideIn the next exercise you may need to use brackets in the formulae. We use brackets around polyatomicions (sulphate, nitrate, ammonium) whenever we need two or more of them ;e.g. sodium hydroxide, NaOHcopper hydroxide, Cu(OH)2aluminium hydroxide, Al(OH)3Exercise 3a.Copper (II) nitrateg.Iron(III) sulphateb.Sodium sulphateh.Copper(II) ethanoatec.Calcium hydroxidei.Ammonium carbonated.Sodium hydrogensulphatej.Calcium phosphatee.Aluminium nitratek.Iron (III) carbonatef.Potassium hydrogen phosphatel.Ammonium sulphate
Ions to Formulae and Equations Nowbalance some simple equations.Write the word equation and the write in the formulae underneath itSodium hydroxide + hydrochloric acid sodium chloride + waterNaOH + HClNaCl + H2OIn a balanced equation there will be the same number of atoms of eachelement on both sidesof the arrow. In this example there is one sodium atom in the sodium hydroxide and one in the sodium chloride. There is one atom of hydrogen on each side also. Count thehydrogens and the chlorine.Exercise 41.Calcium carbonate calcium oxide + carbon dioxide2.Hydrochloric acid + sodium hydroxide sodium chloride + water3.Magnesium + sulphuric acid magnesium sulphate + hydrogen gas4.Copper sulphate + zinc zinc sulphate + copper5.Iron II oxide + calcium calcium oxide + ironIn more difficult equations you need to multiply some of the formulae to balance the elements;Copper + oxygen gas copper oxideCu + O2CuOStart with what changes; there are 2 O’s in O2and only one in CuO. To balance it you need 2O’s in the products. Don’t be tempted to write CuO2, you have found the formula and you can’t change it. Instead double the CuOCu + O22CuONow you have balanced the oxygen, you have 2 O’s in O2and in the 2CuOBut you now have 2Cu’s in the products but only one in the reactants, so double the Cu2Cu + O22CuOQuickly double check each element, all done.