The reaction phenomenon between sodium and water is that sodium metal floats on water, melts into shiny balls, swims, and makes a whistling sound. When the phenolphthalein reagent is added, the solution turns red.
Reaction principle: Since the reaction between sodium and water is very violent, a large amount of heat is released. In a high temperature environment, hydrogen comes into contact with air and burns to produce. Sparks. Sodium reacts with water to form sodium hydroxide, which is alkaline and turns the phenolphthalein reagent red.
Chemical equation for the reaction between sodium and water
1. Chemical equation: 2Na+2H2O=2NaOH+H2↑2Na+2H2O=2NaOH+H2. ↑< /p>
2. Ionic equation: 2Na+2H2O=2Na++2OH?+H2↑2Na+2H2O=2Na++2OH?+H2↑
3. and water belongs to displacement reaction, ionic reaction, redox reaction, exothermic reaction, NaNa is the agentt reducing agent, H2OH2O is the reducing agent, NaOHNaOH is the oxidation product and H2H2 is the reduction product.
The reaction phenomenon between sodium and water is that sodium metal floats on water, melts into shiny balls, swims, and makes a whistling sound. When the phenolphthalein reagent is added, the solution turns red. Bubbles appear, but there is no popping sound (gas is produced. Although the gas is hydrogen, it is isolated by ethanol, does not come into contact with air and does not does not react with oxygen, so there is no dry noise 1 mol of - Hydroxyl group OH in 1 mole of ethanol Hydrogen on the hydroxyl group participated in the reaction)
After the reaction, the wall of the test tube became hot, but the sodium did not melt (the reaction was exothermic, but the heat did not reach the melting point of the sodium. The reaction was slow and exothermic. The hydroxyl group on the hydrogen is not as reactive.f than water. After the reaction, phenolphthalein is added dropwise into the test tube and the solution spins. red (proof that the reaction generates an alkaline substance (sodium ethoxide)) 2H3CH2OH+2Na==2H3CH2ONa+H2 (gas)
Also called substitution reaction (Na replaces H) Oxidation reaction (l The addition of oxygen and Dehydrogenation are both called oxidation reactions, generating H2) Since the reaction between sodium and water is very violent, a large amount of heat is released. In a high temperature environment, hydrogen comes into contact with air and burns to produce sparks. Sodium reacts with water to form sodium hydroxide, which is alkaline and turns the phenolphthalein reagent red.
Sodium metal reacts with water
Sodium reacts with water. It is found at the beginning of the periodic table. The temperature increases. Explosive white light and other chemical reactions.
Thefirst element sodium will be less dense than water, so sodium will float on water. The second point will spin quickly on the water and make a sound. The third sodium point will melt into a small ball. The chemical reaction between sodium and water produces oxygen and sodium oxide.
Sodium metal reacts with water to generate sodium hydroxide and hydrogen. The chemical equation is: 2Na+2H?O=2NaOH+H?↑. The phenomenon when sodium is put into water is as follows: the sodium metal floats on the water, melts into small shiny balls, swims, makes a hissing sound and flows into the reacted solution. Add the sodium drop by drop. phenolphthalein reagent and the solution turns red. The chemical properties of sodium are very active: it combines with oxygen at room temperature and when heated, reacts violently with water and explodes in large quantities. Sodium can also burn in carbon dioxide, rreact with weak alcohols to produce hydrogen and can also react with liquid ammonia which has very low ionization capacity. The sodium should be immersed in series of liquid paraffin, mineral oil and benzene and sealed. Large quantities are usually stored in iron drums filled with argon and sealed. Sodium metal cannot be stored in kerosene because it reacts with organic acids and other substances present in kerosene to form sodium organic acid and other substances (in the form of **) which adhere to the sodium surface.