0.25 M potassium sodium tartrate solution


0.25 M 酒石酸鈉鉀溶液

6% hydrogen peroxide solution  


6% 過氧化氫溶液

0.1 M cobalt(II) chloride solution


0.1 M 氯化鈷(II)溶液

Pour 10 cm³ of 0.25 M potassium sodium
tartrate solution and 3 cm³ of 6% hydrogen
peroxide solution into a boiling tube.


將10 cm³ 的 0.25 M酒石酸鈉鉀溶液和3 cm³
的6% 過氧化氫溶液加入大試管中。

Insert a thermometer into the solution and
measure the temperature of the solution.


在溶液中插入溫度計以量度溶液的溫度。

Gently swirl the boiling tube to mix the
content thoroughly.


輕搖大試管以確保其內含物均勻混和。

Fill a 250 cm³ beaker with just-boiled
hot water to half full.


把剛煮沸的水注入一個250 cm³ 燒杯至半滿。

Place the boiling tube into the beaker to
warm the content. Gently swirl the boiling
tube until the temperature of the content
reaches about 65^oC.


將大試管置於燒杯中，讓其內含物加熱。
在加熱過程中輕輕搖勻大試管中的內含物，
直至它的溫度約達到65^oC。

Quickly add 1 cm³ of 0.1 M cobalt(II) chloride
solution into the reaction mixture.


迅速地將1 cm³ 的0.1 M氯化鈷(II)溶液加入反應
混合物。

Immediately place a cotton plug loosely to
the mouth of the boiling tube.


立即在大試管的管口塞上鬆散的綿花。

Record the observation.


記錄觀察。