Chemical News and Journal of Physical Science, Tom 115Chemical news office., 1917 |
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Strona 55
... indicator . As it is difficult to secure a cobalt compound of known cobalt content , it is recommended that the sodium thio- sulphate solution be standardised by means of potassium dichromate in the usual manner . Since 1K2Cr2O7 = 61 ...
... indicator . As it is difficult to secure a cobalt compound of known cobalt content , it is recommended that the sodium thio- sulphate solution be standardised by means of potassium dichromate in the usual manner . Since 1K2Cr2O7 = 61 ...
Strona 91
... indicator . Under these conditions each molecule of fluosilicic acid , H2S F6 , requires six molecules of alkali for neutralisation , and therefore will be counted as six molecules of hydrofluoric acid . Almost the only attempt to ...
... indicator . Under these conditions each molecule of fluosilicic acid , H2S F6 , requires six molecules of alkali for neutralisation , and therefore will be counted as six molecules of hydrofluoric acid . Almost the only attempt to ...
Strona 101
... indicator . In this now neutral solution determine the total fluorine by titration with standard ferric chloride solution as described above . Dissolve another portion of the mixture in a small volume of water , and , after addition of ...
... indicator . In this now neutral solution determine the total fluorine by titration with standard ferric chloride solution as described above . Dissolve another portion of the mixture in a small volume of water , and , after addition of ...
Strona 107
... Indicator . " NOTICES OF BOOKS . Elementary Qualitative Analysis . By BENTON DALES , Ph.D. , and OSCAR LEONARD BARNEBY , Ph.D. New York : John Wiley and Sons , Inc. London : Chapman and Hall , Ltd. 1916. Pp . vii + 205 . Price 5s . 6d ...
... Indicator . " NOTICES OF BOOKS . Elementary Qualitative Analysis . By BENTON DALES , Ph.D. , and OSCAR LEONARD BARNEBY , Ph.D. New York : John Wiley and Sons , Inc. London : Chapman and Hall , Ltd. 1916. Pp . vii + 205 . Price 5s . 6d ...
Strona 139
... indicator ) . As a means of measuring hydrogen - ion concentration , the use of an indicator possesses the obvious advantage of con- venience of operation , practically instantaneous readings and inexpensive apparatus . Ostwald's ...
... indicator ) . As a means of measuring hydrogen - ion concentration , the use of an indicator possesses the obvious advantage of con- venience of operation , practically instantaneous readings and inexpensive apparatus . Ostwald's ...
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