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Experiments for 'sodium chloride'
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Results for 'sodium chloride':
EXPERIMENT 1 --------------- This is a very nice experiment, involving beautifully coloured compounds, but it is a hazardous experiment as well, due to the use of mercury (II) compounds. Mercury (II) builds a complex with excess iodide, [HgI4]2-, which gives a beautiful bright yellow precipitate with Ag+ and a beautiful bright brick- red precipitate with Cu+.
EXPERIMENT 2 --------------- When ethanol and acetone are mixed, together with sulphuric acid, then no special visible reaction occurs. The compounds are bound to the acid. Their smell hardly exists after mixing with the acid. The mixture is not capable anymore of producing HCl from NaCl, nor does it show a strong reaction with KMnO4 (as was expected, due to the presence of concentrated H2SO4).
EXPERIMENT 3 --------------- Copper (II) is reduced by sulfite. With chloride the resulting copper (I) can be kept in solution. The copper (I) compound is very susceptible to oxidation by oxygen from the air.
EXPERIMENT 4 --------------- Copper (II) chloride reacts violently with metallic aluminium. When copper sulfate or nitrate is used, then this reaction does not occur. When sodium chloride is used, this reaction also does not occur. Both cupric ions and chloride ions are needed for quick reaction with aluminium, but if they are present, then a very violent reaction occurs.
EXPERIMENT 5 --------------- Copper (II) chloride dissolves in fairly concentrated nitric acid, but it does not dissolve easily. Only a small amount can be dissolved. It dissolves with a bright green/cyan color. Aluminum metal is not attacked by this solution. Slight dilution does not make the liquid more active towards aluminum. When a lot of sodium chloride is added, then the aluminum is attacked and it dissolves.
EXPERIMENT 6 --------------- Nitrite forms a dark green coordination complex with copper (II) ions in neutral environments. When acidified, then a new coordination complex (dark blue with a grey hue) is formed in the presence of chloride of very high concentration. This is not formed when chloride is absent.
EXPERIMENT 7 --------------- Praseodymium (III) ions form complexes with chloride, bromide and iodide. With fluoride a precipitate is formed.
EXPERIMENT 8 --------------- Hexavalent chrome forms a stable volatile compound, when mixed with chloride in strongly dehydrating conditions. The compound formed is called chromyl chloride and its constitution is CrO2Cl2.
EXPERIMENT 9 --------------- Chromium (III) builds a nice brightly colored green complex with phosphates. This compound has no bluish hue, like sulfate gives with chromium (III). Chloride also builds a complex. Formation of these complexes is not on simple addition of a chromium (III) salt to the corresponding anions. Heating is required.
EXPERIMENT 10 --------------- Sodium chloride reacts with sulfuric acid to give hydrogen chloride gas. Sodium bromide shows a similar reaction, producing hydrogen bromide, but in a side reaction some bromine is formed.
EXPERIMENT 11 --------------- Sodium chlorate reacts with chloride in acidic environment, forming chlorine (which can be detected by means of its odour) and a fairly intensely colored yellow gas (chlorine dioxide). The color of this gas is much more intense than the color of chlorine. The yellow compound is destroyed by sulfite and nitrite.
EXPERIMENT 12 --------------- Bromate reacts with chlorides, releasing chlorine. Probably some bromine is produced as well or a bromine/chlorine compound is produced.
EXPERIMENT 13 --------------- TCCA does not react with sulphuric acid, at least not visibly. Even when heated, no reaction seems to occur. On addition of some solid NaCl vigorous evolution of chlorine gas is observed.
EXPERIMENT 14 --------------- Bismuth (III) forms a deep-orange iodo-complex and a yellow iodo-chloro complex.
EXPERIMENT 15 --------------- Palladium (II) is not oxidized by H2O2 in acidic environments.
EXPERIMENT 16 --------------- Palladium (II) is not easily reduced by mild reducing agents. Only very strong reductors are capable of reducing this to metallic palladium. Strong oxidizers probably are capable of oxidizing palladium (II) to a higher oxidation state, but if this is true, then the higher oxidation state has almost the same color.
Sulfite, instead of reducing palladium to the metallic state, appears to form a brightly colored coordination complex in acidic environments.
EXPERIMENT 17 --------------- Palladium probably gives a very finely divided metallic compound, when it is reduced by stannous chloride. The intense colors, appearing in this experiment probably are caused by colloidal solutions.
EXPERIMENT 18 --------------- Aluminum reacts vigorously with water, when its passivating layer of oxide is effectively destroyed. This can be achieved by using tetrachloro or tetrabromo complexes of copper (II). Acid can also be used to destroy the passivating layer, but this takes considerably more time. Cobalt has a similar effect as copper (II), but it is less pronounced.
End of results for 'sodium chloride'
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