標定 JIS K 8005 に規定するしゅう酸ナトリウム 0.167

標定 JIS K 8005 に規定するしゅう酸ナトリウム 0.167 5g を量り取り，硫酸 (1＋8) に溶解し，同じ硫酸を用いて全量フラスコ 250ml に移し入れ，標線まで加える。この溶液は，使用時に調製する。
全量ピペットを用い，この溶液 10ml をビーカー300ml に取り，硫酸 (1＋8) 100ml を加えて，2mmol/l過マンガン酸カリウム溶液を滴加し，終点近くなったとき約 60℃に加熱し，更に 2mmol/l 過マンガン酸カリウム溶液を滴加して，うすい赤紫が現れるときを終点とし，ファクターは，次の式によって算出する。

Results (English) 1:

Provisions to coordinate constant JIS K 8005 oxalic acid sodium 0.167 5 g dissolved in zircaloy, sulfuric acid (1 + 8), using the same sulfuric acid into the whole flask 250 ml added to the goal line, put the. Be prepared when you use this solution,.End, and heated to about 60 ° C and using a single pipette, take 10 ml of this solution into a 300 ml beaker, add 100 ml sulphuric acid (1 + 8), 2mmol/l excess of potassium permanganate solution Dropwise, came near the end, by applying the 2mmol/l excess of potassium permanganate solution drops further, appear pale reddish purple when you factor is calculated by the following formula.

Results (English) 2:

Weighed orientation JIS K 8005 to oxalic acid sodium 0.167 5g to define, was dissolved in sulfuric acid (1 + 8), was transferred to the volumetric flask 250ml using the same sulfuric acid, add up to the mark. This solution is prepared at the time of use.
Using transfer pipette, it takes this solution 10ml beaker 300 ml, was added sulfuric acid (1 + 8) 100ml, was added dropwise 2mmol / l potassium permanganate solution, heated to about 60 ° C. when the closer end point, further 2mmol / l dropwise with potassium permanganate solution, the end point when the thin red purple appears, factor is calculated by the following equation.

Results (English) 3:

Sodium oxalate 0.167 5 g in the location JIS K 8005 to weigh ， sulfate (1) - (8) dissolved in sulfuric acid by using the same ， ， is transferred into the total amount of 250 ml flask, adding to the reference line. This solution is prepared ， when in use.， using transfer pipet to 10 ml of this solution to 300 ml beaker ， sulfate (1) - (8) ， added dropwise to 100 mmol / L potassium permanganate solution ， was near the end when heated to about 60. Degree. C. or more ， 2 mmol / L potassium permanganate acid solution droplet ， ， factor to ， appears pale purplish red when the end point is calculated by the following equation.