Page:The British pharmacopœia.djvu/528

494 {|
 * colspan=3 |British weights and measures.
 * colspan=3 |Metric weights and measures.
 * colspan=3 |$$\overbrace{\qquad\qquad\qquad\qquad}$$
 * colspan=3 |$$\overbrace{\qquad\qquad\qquad\qquad}$$
 * Grains weight of Substance.
 * Grain measures of Vol. Sol.
 * or
 * Grams, wt. of Substance.
 * C. C. of Vol. Sol.
 * Ammonii Carbonas||52.3||=||1000||or||5.23||=||100.0
 * Borax||191.0||=||1000||or||19.10||=||100.0
 * Liquor Ammoniæ||85.0||=||500||or||8.50||=||50.0
 * Fort.||52.3||=||1000||or||5.23||=||100.0
 * Calcis||4375.0||=||180||or||437.5||=||18.0
 * Sacchar||460.2||=||254||or||46.02||=||25.4
 * Plumbi Subacet||284.5||=||500||or||28.45||=||50.0
 * Potassæ||462.9||=||482||or||46.29||=||48.2
 * Efferves||4375.0||=||180||or||437.5||=||18.0
 * Sodæ||458.0||=||470||or||45.80||=||47.0
 * Efferves.||4375.0||=||150||or||437.50||=||15.0
 * Plumbi Acetas||38.0||=||200||or||3.80||=||20.0
 * Potassa Caustica||56.0||=||900||or||5.60||=||90.0
 * Potassii Bicarbonas||50.0||=||500||or||5.00||=||500
 * Carbonæ||83.0||=||980||or||8.30||=||96.0
 * Citras||102.0||=||1000||or||10.20||=||100.0
 * Tartras||122.0||=||990||or||12.2||=||99.0
 * Acida ||204.0||=||1000||or||20.40||=||100.0
 * Soda Caustica||40.0||=||900||or||4.00||=||90.0
 * Tartarata||141.0||=||990||or||14.1||=||99.0
 * Sodii Bicarbonas||84.0||=||1000||or||8.4||=||100.0
 * Carbonas||143.0||=||960||or||14.30||=||96.0
 * Sodium|||23.0||=||975||or||2.30||=||97.5
 * }
 * Potassæ||462.9||=||482||or||46.29||=||48.2
 * Efferves||4375.0||=||180||or||437.5||=||18.0
 * Sodæ||458.0||=||470||or||45.80||=||47.0
 * Efferves.||4375.0||=||150||or||437.50||=||15.0
 * Plumbi Acetas||38.0||=||200||or||3.80||=||20.0
 * Potassa Caustica||56.0||=||900||or||5.60||=||90.0
 * Potassii Bicarbonas||50.0||=||500||or||5.00||=||500
 * Carbonæ||83.0||=||980||or||8.30||=||96.0
 * Citras||102.0||=||1000||or||10.20||=||100.0
 * Tartras||122.0||=||990||or||12.2||=||99.0
 * Acida ||204.0||=||1000||or||20.40||=||100.0
 * Soda Caustica||40.0||=||900||or||4.00||=||90.0
 * Tartarata||141.0||=||990||or||14.1||=||99.0
 * Sodii Bicarbonas||84.0||=||1000||or||8.4||=||100.0
 * Carbonas||143.0||=||960||or||14.30||=||96.0
 * Sodium|||23.0||=||975||or||2.30||=||97.5
 * }
 * Tartras||122.0||=||990||or||12.2||=||99.0
 * Acida ||204.0||=||1000||or||20.40||=||100.0
 * Soda Caustica||40.0||=||900||or||4.00||=||90.0
 * Tartarata||141.0||=||990||or||14.1||=||99.0
 * Sodii Bicarbonas||84.0||=||1000||or||8.4||=||100.0
 * Carbonas||143.0||=||960||or||14.30||=||96.0
 * Sodium|||23.0||=||975||or||2.30||=||97.5
 * }
 * Sodii Bicarbonas||84.0||=||1000||or||8.4||=||100.0
 * Carbonas||143.0||=||960||or||14.30||=||96.0
 * Sodium|||23.0||=||975||or||2.30||=||97.5
 * }
 * Sodium|||23.0||=||975||or||2.30||=||97.5
 * }
 * }

VOLUMETRIC SOLUTION OF SODA. (Hydrate of Sodium, NaHO = 40.)

Fill a burette with the solution of soda, and cautiously drop this into 1,000 grain-measures of the volumetric solution of oxalic acid until the acid is exactly neutralised as indicated by litmus. Note the number of grain-measures of the solution of soda used, and having then introduced 9,000 grain-measures of it into a graduated jar, augment this quantity by the addition of water, until it becomes $$\frac {9000\times 1000}{n}$$ grain-measures. If, for example, n=930, the 9,000 grain-measures should be augmented to $$\frac{9000\times1000}{930}=9,677$$ grain-measures. 1,000 grain-measures of this solution contain one molecular weight in