Modern inorganic chemistry

236 GROUP V value. However, in the presence of water vapour the line powder soon becomes covered with a layer of glassy trioxoph ...

GROUP V 237 ARSENIC(V) OXIDE, As 4 O 10 Unlike phosphorus pentoxide, this oxide cannot be made directly. Arsenic(V) acid, H 3 As ...

238 GROUPV in alkalis, and dissolves only in acids (when bismuth salts are formed), a clear indication of the more metallic natu ...

GROUP V 239 converter (Figure 9.6). This contains a gauze of platinum, or platinum-rhodium, heated at first electrically, then m ...

240 GROUP V A similar decomposition occurs if nitric acid is subjected to a temperature above its boiling point. The chemical pr ...

GROUPV 241 (1) Non-metals:—These are often oxidised to the corresponding oxoacid, and nitrogen oxide is formed. For example, sul ...

242 GROUP V NO" + 4Zn + 15OH- + 6H 2 O -» NHJ + 4Zn(OH)^ (3) Cations:—Some of these are oxidised to a higher state by nitric aci ...

GROUP V 243 The nitrates of other metals give nitrogen dioxide, oxygen and the metal oxide, unless the latter is unstable to hea ...

244 GROUP V decomposition. They are usually prepared by heating the alkali metal nitrate, alone or with lead as a reducing agent ...

GROUP V 245 Both the acid and its salts are powerful reducing agents. They reduce, for example, halogens to halides, and heavy m ...

246 GROUP V The solution obtained is evaporated somewhat, cooled in a vacuum desiccator and the crystals of the tetraoxo-acid fi ...

GROUP V 247 which contain more than one phosphorus atom and P—O—P bonds. Structures include both ring and chain forms. Separatio ...

248 GROUPV The arsenate(III) ion can be reduced by systems which generate hydrogen (for example metal/acid) to give arsine, for ...

GROUPV 249 HALOGEN COMPOUNDS OF GROUP V ELEMENTS Nitrogen trifluoride and trichloride can both be prepared as pure substances by ...

250 GROUP V fluorine atoms will attract the lone pair electrons), it forms a com- pound with nickel, Ni(PF 3 ) 4 , very like nic ...

GROUP V 251 PHOSPHORUS(V) HALIDES The properties of the phosphorus trihalides given above indicate the ability of phosphorus to ...

252 GROUP V The reaction of ethanoic acid and phosphorus pentachloride may be written: CH 3 COOH + PC1 5 -> O=PC1 3 + HClT + ...

GROUP V 253 Antimony(III) halides Antimony(IIl) fluoride is a readily hydrolysable solid which finds use as a fluorinating agent ...

254 GROUP V ammonium molybdate and nitric acid. Specific tests for various oxophosphates are known. Arsenic Because of its toxic ...

GROUP V 255 differences. Show how the increasing metallic character of the element is reflected in the chemical behaviour of the ...