Is water acidic or alkaline?

Introduction Is the water acidic or alkaline? Small bottled water and bottled water often give people a sense of confidence: they put a lot of effort into putting it in the bottle and sell it for hundreds of dollars more than tap water.

Is water acidic or alkaline?

Small bottled water and barreled water often give people a sense of confidence: the water that has put so much effort into the bottle and is sold hundreds of times more expensive than the tap water should be good. Additionally, the water is crystal clear. without any impurity. You can say with some pride: all the water I drink at home is packaged water. But if I ask you, do you drink acidic water or alkaline water?

In fact, the things you take for granted in life may be the things you understand the least. Two water bottles that look exactly the same can be very different.

< p> There are thousands of miles before you choose to buy. For packaged drinking water, you'd better do a little research on the "property" of the water. Anyone with a little knowledge of chemistry knows the value of PH

PH Concept The value is commonly called pH, which. est divided into 14 levels from 1 to 14. 1-7 is acidic, 7-14 is alkaline and 7 is neutral. A fundamental factor that determines the "property" of water is water.

pH value. . According to the pH value, the drinking water currently sold in the market can be divided into two types: weakly acidic water and weakly alkaline water. The pH value of the former is generally between 5.0 and 7.0, the pH value of the latter. usually between 7.0 and 8.0.

When choosing daily drinking water, we should also choose weakly alkaline water. For water, whether the water contains minerals and trace elements is the key to determining its acidity

alkalinity. Water in nature, such as spring water, lake water, etc., is generally weakly alkaline water because nature has endowed it with rich minerals and trace elements.

As for purified water, as the name suggests, there is nothing in the water except water molecules, and eau is naturally acidic. Artificial mineral water which is now popular in the market contains artificially added minerals.

It destroys the acid-base. balances water and is even more acidic than pure water.

Whether the ashes are acidic or alkaline

You can use test paper to measure it.

As we all know, acidity and alkalinity are expressed chemically by the pH value: pH=7 is neutral, pH<7 is acidic, and pH>7 is alkaline.

There are three indicators on the pH test paper: methyl red, bromocresol green and thymol blue. Methyl red, bromocresol green, thymol blue, and phenolphthalein all change color according to certain rules in solutions with different pH values.

But the most effective method is to use PH test paper, PH agent, etc. to distinguish acidity and alkalinity by comparing with the map of cstandard color. What can turn the purple litmus reagent into blue is alkaline, and that which can turn the purple litmus reagent into red is acidic. What makes the phenolphthalein reagent red is alkalinity.

When using, tear one strip and place it in a watch glass. Use a dry glass rod to dip a drop of the solution to be tested, or use a rubber-tipped dropper to draw up the solution and. drop it in the middle of the test paper, then according to the test paper. By comparing the color change with the standard color card, you can know the acidity and alkalinity of the solution.

ExpandExhibition information:

Usage

1. Check the pH of the solution: take a small one. Piece Place the test paper on a watch glass or piece of glass. Dip a clean glass rod anddry in the liquid to be tested and place it in the middle of the test paper. Observe the color once the change has stabilized. color card to determine the nature of the solution.

2. Test the acidity and alkalinity of the gas: first wet the test paper with distilled water, stick it to one end of the glass rod, then place it near the mouth of the container containing the gas. to measure, observe the change in color and judge the nature of the gas. (The test paper cannot touch the wall of the container)

Baidu Encyclopedia-pH test paper

The ash is alkaline. Ash, a kind of industrial solid waste, is the waste discharged from coal-fired power plants, industrial and civil boilers and other equipment, also called slag. The main ingredients are silica, alumina, iron oxide, calcium oxide, magnesium oxide, etc. Its mineral composition mainly includes: anorthite, quartz, mullite, magnetite and pyrite, a large amount of glass bodies containing silicon and active SiO2, active Al2O3 and a small amount of unburned carbon.

The disposal and accumulation of coal slag not only occupies land, releases sulfur-containing gases that pollute the atmosphere, harm the environment and can even spontaneously ignite.

China has made progress in the use of liquid slag from thermal power plants. Calcium augmentation technology is used to increase the calcium oxide content in liquid slag to about 30%, thereby significantly improving the hydraulic gelation activity of the ash. Its composition and properties are close to acidic blast furnace slag, making it a high quality raw material. for cement and wall materials.

Coal is a non-renewable resource. Charcoaln is a solid combustible mineral that was gradually formed by ancient plants buried underground and underwent complex biochemical and physicochemical changes. It is a solid combustible organic rock that is primarily formed by the biochemical effects of plant remains and then transformed by geological processes after burial. .

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