Release That Witch
Cheng Yan travels through time, only to end up becoming an honorable prince in the Middle Ages of Europe. Yet this world was not quite as simple as he thought. Witches with magical powers abound, and fearsome wars between churches and kingdoms rage throughout the land. Roland, a prince regarded as hopeless by his own father and assigned to the worst fief, spends his time developing a poor and backward town into a strong and modern city, while fighting against his siblings for the throne and absolute control over the kingdom. Join Roland as he befriends and allies with witches and, through fighting and even farming, pushes back invaders from the realm of evil.
The Night before the Final Battle
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Chapter 166 The Night before the Final Battle
On the promised fifth day, Roland finally finished preparing all the ingredients needed to produce guncotton.
He made a serious error during the electrolysis of the salt water. He used the copper strips Anna cut out as the electrodes, causing the electrodes to dissolve. He ended up wasting an entire pot of the salt water. Saturated brine was typically used to prevent the dissolution of chlorine in water during the electrolysis process, but salt in this era was not an inexpensive, everyday item. He felt like he was uselessly throwing away gold royals when discarding the contaminated salt water. He was finally able to solve the issue after using carbon rods as the electrodes.
He boiled the caustic soda with water to remove the grease. When he ended up with grease-free cotton gauzes, he brought the rest of the caustic soda to the chemistry lab.