Question 1: What is the optimum temperature of boiling water? This is generally 100, but in fact, many of them are 90-95, which is drinkable and has no impact on human health!

Question 2: What is the highest temperature at which boiling water can burn? 100 degrees.

Question 3: When boiling water, how high can you drink at least? Everyone knows that drinking more boiled water in daily life is good for health, but there are still many stresses on how to boil and drink boiled water.

Boiling water can kill bacteria and remove substances harmful to human body, because tap water is chlorinated, and chlorine interacts with residual organic substances in water to form toxic carcinogenic compounds such as halogenated hydrocarbons and chloroform. When the water temperature reaches 90℃, the content of halogenated hydrocarbons rises to 19 1 μ g/L, and chloroform rises to 177 μ g/L, both exceeding the national standard by two times. When the water temperature just reached 100℃, the contents of halogenated hydrocarbons and chloroform were 1 10 μ g/L and 99 μ g/L, respectively. If boiling is continued for 3 minutes, these two substances will rapidly drop to 9.2 micrograms and 8.3 micrograms per liter respectively, reaching the drinking standard. So it is best to boil the water for about 3 minutes.

In order to save water, some people often reheat the leftover boiling water, which is a bad habit. Because repeated boiling water will cause water aging, it will not only lose minerals beneficial to human body, but also produce some harmful substances such as nitrite. Once nitrite enters the human body in large quantities, it can make the red blood cells in the blood lose their oxygen-carrying function and lead to tissue hypoxia. People who drink this water for a long time will have symptoms such as nausea, vomiting, headache, purple nails and lips, and palpitation. It may even cause hypoxia and even induce cancer.

A cold drink after getting up in the morning is good for your health. Many people like to dry a cup of boiled water the night before and drink it the next morning. This practice is possible in the case of low temperature; For example, in summer, when the temperature exceeds 30 degrees Celsius, the air humidity is high, and bacteria multiply rapidly, cold boiled water will lose its biological activity overnight, which is easy to be polluted and cause diarrhea. You can pour half a cup of boiling water the night before, then cover it and drink it with warm water the next morning.

In addition, don't leave cold boiled water for too long. It is best to drink boiled water on the same day. It is best not to drink cold boiled water for more than 3 days.

Question 4: How high is the boiling water? You can't drink it. The boiling point of water is 100 degree, and it can only be 100 degree. If boiled for too long, it will turn into dry water. This water is not drinkable.

Question 5: What is the highest temperature that boiling water can burn depends on two factors. First, different regions have different altitudes; The second is the sealing degree of the boiling water container. There is no single fixed answer.

Question 6: To what extent does the boiling water boil? The boiling point of water is related to atmospheric pressure. The higher the atmospheric pressure, the higher its boiling point.

Therefore, the highest temperature of boiling water depends on the place where the water is boiled and the sealing condition of the boiling water container. The boiling water temperature of ordinary pots at home is generally around 95-99 degrees Celsius. In the pressure cooker, the boiling temperature of water can reach about 120 degrees Celsius.

For example, in the plateau area, the boiling point of * * * is about 78.5~80 degrees Celsius. Because of the low air pressure, cooking there can only be done in a pressure cooker.

Question 7: How much boiling water should I boil? Boiling water can kill bacteria and remove substances harmful to human body, because tap water is chlorinated, and chlorine interacts with residual organic substances in water to form toxic carcinogenic compounds such as halogenated hydrocarbons and chloroform. When the water temperature reaches 90℃, the content of halogenated hydrocarbons rises to 19 1 μ g/L, and chloroform rises to 177 μ g/L, both exceeding the national standard by two times. When the water temperature just reached 100℃, the contents of halogenated hydrocarbons and chloroform were 1 10 μ g/L and 99 μ g/L, respectively. If boiling is continued for 3 minutes, these two substances will rapidly drop to 9.2 micrograms and 8.3 micrograms per liter respectively, reaching the drinking standard. So it is best to boil the water for about 3 minutes.

Question 8: To what extent is boiled water the best? Boiled water is the water that people drink the most in daily life. Dull and tasteless, extremely ordinary. But it is such a cup of boiled water that has a very important conditioning effect on the physiological mechanism of the human body. Drinking a cup of warm water on an empty stomach in the morning is beneficial to people's health, which can not only dilute blood, reduce blood viscosity and promote blood circulation, but also reduce the risk of thrombosis and prevent the occurrence of cardiovascular and cerebrovascular diseases during the "peak period" of heart disease, which is especially important for middle-aged and elderly people. Drinking a cup of warm water after getting up in the morning can not only quench thirst and diuresis due to the decrease of water in the body after sleeping at night, but also make the skin smooth and tender.

First of all, it takes three minutes to boil water.

Water needs to be boiled for 3 minutes to drink, because drinking water without boiling is easy to get cancer.

People in the city drink tap water. After being sent to a waterworks, ordinary Jiang Hushui is chlorinated to remove impurities, such as microorganisms. But at the same time, chlorine interacts with residual organic matter in water, which will form toxic carcinogens such as halogenated hydrocarbons and chloroform.

It is proved that the contents of halogenated hydrocarbons and chloroform are closely related to the change of water temperature and the duration of boiling. When the water temperature reached 90℃, the content of halogenated hydrocarbons increased from 53 μ g per liter to 19 1 μ g, and chloroform increased from 43.8 μ g per liter to 177 μ g, both exceeding the national standard by two times. When the water temperature rose to 100℃, the contents of halogenated hydrocarbons and chloroform decreased to 1 10 μ g and 99 μ g respectively, which still exceeded the national standards. If boiling continues for 3 minutes, the contents of halogenated hydrocarbons and chloroform will be reduced to 9.2 micrograms and 8.3 micrograms respectively, and then they will become safe drinking water.

Of course, the longer the boiling water is boiled, the better, because the longer the boiling time is, the nonvolatile harmful substances and nitrite in the water will be concentrated because of the evaporation of water, and the content will be higher. Drinking such water is also harmful to your health.

Second, it is best not to drink boiled water at night.

Many people have a bottle of cold boiled water at home, which can be drunk at any time. However, this convenience may bring health risks. If you don't finish it that day, you must pour it out.

This is because the nitrogen-containing organic matter in boiled water will be decomposed into nitrite for a long time, and it is inevitable that the intervention of microorganisms will accelerate the decomposition of nitrogen-containing organic matter. The harm of nitrite to the body is well known. It has a strong ability to combine with hemoglobin in the body, which will hinder the normal oxygen transmission function of blood. So it's best to drink boiled water that day.

In addition, many families are used to drinking bottled water now, and seemingly well-sealed bottled water should be drunk within three or four days. Because bottled water has been opened for a long time, bacteria will sneak in along the water inlet, and when the water dispenser comes out, it will form negative pressure, which will inevitably suck in some air, and bacteria and microorganisms in the air will also "take advantage of it". If you don't drink it for a short time, the bacteria will exceed the standard and the pure water will no longer be pure.

Third, resolutely put an end to the repeated use of boiled water, and five kinds of boiled water cannot be drunk.

Re-boiled water will lead to excessive nitrite content in water. As we all know, excessive nitrite in water will cause fatigue, lethargy, coma, cyanosis, blood pressure drop, abdominal pain, diarrhea, vomiting and even malignant diseases for a long time. The method to prevent boiled water pollution is simple: resolutely put an end to the reuse of boiled water and boil it repeatedly. It should be noted that the boiled water mentioned below is not drinkable.

Question 9: What is the highest temperature of boiling water? At a standard atmospheric pressure, the boiling point of water is 100 degrees Celsius, and at the same standard, the freezing point of water is 0 degrees Celsius. This is the natural standard of centigrade set by people.

The air pressure is low for thousands of meters at sea, which will be lower than 100 degrees, and may be 90 or 80 degrees.