Chemical News and Journal of Physical Science, Tom 121Chemical news office., 1921 |
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Strona 7
... sulphuric acid . A reddish brown film coloration on the surface of the liquid , gradually changing to deep yellow , indicates presence of petroleum spirit . If a few drops of the distillate are added to water , a brilliant in ...
... sulphuric acid . A reddish brown film coloration on the surface of the liquid , gradually changing to deep yellow , indicates presence of petroleum spirit . If a few drops of the distillate are added to water , a brilliant in ...
Strona 8
... sulphuric acid . The bromine thus set free removed all iodine that may have been present . This evaporation was repeated three times . In order to remove organic matter the dry bromide was melted in small quantities in a platinum ...
... sulphuric acid . The bromine thus set free removed all iodine that may have been present . This evaporation was repeated three times . In order to remove organic matter the dry bromide was melted in small quantities in a platinum ...
Strona 10
... sulphuric acid . With respect to the combustion of ammonia , catalysis comes into play , and MM . Pascal and Decarnère have studied various forms of catalysers ( Bull . Soc . Chim . , Sept. 19 ) . They found that the mixture only ...
... sulphuric acid . With respect to the combustion of ammonia , catalysis comes into play , and MM . Pascal and Decarnère have studied various forms of catalysers ( Bull . Soc . Chim . , Sept. 19 ) . They found that the mixture only ...
Strona 18
... sulphuric acid . He noticed that the clay separated out very rapidly , and he would like to know what the weight of separation was , and whether it varied to any con- siderable extent with different materials . At the present time ...
... sulphuric acid . He noticed that the clay separated out very rapidly , and he would like to know what the weight of separation was , and whether it varied to any con- siderable extent with different materials . At the present time ...
Strona 27
... sulphuric acid . After standing half an hour the charcoal was filtered off and washed and the amount of acid remaining in filtrate and washings determined by using standard caustic soda . The HCl adsorbed was determined by adding to a ...
... sulphuric acid . After standing half an hour the charcoal was filtered off and washed and the amount of acid remaining in filtrate and washings determined by using standard caustic soda . The HCl adsorbed was determined by adding to a ...
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