table(s) chair(s) bin(s) Other things you may find in a kitchen microwave cooker(s) / oven(s) fridge(s) dishwasher(s) tap(s) (oven)(s) coffee maker(s) food mixer(s) liquidiser(s) Cooking Equipment saucepan(s) frying pan(s) sieve(s) kettle(s) teapot(s) spatula(s) tin opener(s) knife (knives) whisk(s)
¿ Anode (Zn): -¿=Zn ¿ Zn+2 e 2+¿ ¿ Cathode (Fe): -¿=Fe ¿ Fe 2 e 5. Action of an inhibitor Pour ~5 cm3 of solution of sulphuric acid into each of two test tubes. Add two drops of Fe 2+ proving solution (K3[Fe(CN)6]) to each. With the aid of a spatula, add some solid corrosion inhibitor (urotropin) into the second test tube and shake. Place a piece of clean iron wire (paper clip) into each test tube, trying to insert them at the same time. Observe, in which order and with which speed the blue colour forms in the solutions! Did the inhibitor reduce the rate of corrosion of iron? Blue colour occours first in tube including K 3[Fe(CN)6]. It means that inhibiitor accelerates reaction. Conclution
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