Sometimes when we wash clothes ourselves, we will find that washing clothes with soap in summer is easy to produce a lot of bubbles, and washing clothes is also simple, fast and clean. However, in winter, no matter how we wash clothes with soap, few bubbles come out. Washing clothes is difficult and slow, and it is not clean after washing for a long time.
Same clothes, same brand of soap. Why is it easy to wash in summer and not easy to wash in winter? Is it the water? But why is the water from the faucet different?
Actually there is a difference between soft water and hard water. What are hard water and soft water? In this way, anything containing salts such as calcium and magnesium is called hard water. It does not contain salts such as calcium and magnesium, and is called soft water.
Hard water contains calcium, magnesium and other salts. If it is acidic carbonate, such as acidic calcium carbonate and acidic magnesium carbonate, it is called temporary hard water. Because acidic calcium carbonate and acidic magnesium carbonate will become calcium carbonate and magnesium carbonate after heating, and will become soft water after filtering. Hard water contains calcium, magnesium and other salts. If it is sulfate, such as calcium sulfate and magnesium sulfate, it is called permanent hard water. Because such water cannot be completely removed after boiling, because magnesium sulfate can be dissolved in water, and it can be dissolved by 72 cm per 100 cm of water at 20℃. If the water contains both calcium sulfate and magnesium sulfate, it is called amphoteric hard water.
So everyone knows why washing clothes is different because of different seasons, right? But how to wash clothes in winter? In fact, if it is hard water in winter, most people can use the method of boiling at home. It is what we call boiled water that achieves the purpose of softening hard water. More professional distillation methods are used in industry. This can remove more impurities soluble in water, and the softening effect is better. So we can wash clothes easily in winter!