How to increase the ionization of water in addition to increasing the temperature H2O OH

After the addition of sodium, the concentration of hydrogen ions in the water decreases due to the action of sodium and hydrogen ions, thereby promoting the ionization of water.

The ionization of water is a specific manifestation of ionization equilibrium, so we can think about and understand the influencing factors of ionization equilibrium of specific water from the influencing factors of ionization equilibrium.

Temperature: Due to the heat absorption process of water, the ionization equilibrium of water is shifted to the right by increasing temperature, that is, heating can promote the ionization of water, C(H) and C(OH) increase at the same time, KW increases, and the pH value becomes smaller, but C(H) and C(OH) are still equal, so the system is still neutral.

Acidity and alkalinity: adding acid or alkali to pure water, H ionized by acid or OH ionized by alkali can shift the ionization balance of water to the left, that is, the addition of acid and alkali inhibits the ionization of water.

If the temperature does not change at this time, then kw does not change, and c(h) and c(oh) increase and decrease.

That is, with the addition of acid, C(H) increases, C(OH) decreases, and pH decreases. With the addition of alkali, C(OH) increases, C(H) decreases, and pH increases.

Hydrolyzable salt: add hydrolyzable salt to pure water, because the essence of hydrolysis is the weak acid group or weak alkali cation ionized by salt combined with water ionization H or OH, so hydrolysis will destroy the ionization balance of water, so that the ionization balance of water will shift to the right. That is, the hydrolysis of salts promotes the ionization of water.

Other factors: The addition of reactive metals to the water can also promote the ionization of water due to the direct interaction with the h ionized by water.

Add hydrolyzed salts, add active metals, add fluorine gas, and so on.

Ionization of water: H2O== (reversible sign) oh-

When H+ is added, it causes the concentration of H+ in the solution to increase, causing the ionization of water to move to the left, resulting in a smaller concentration of OH- but a greater concentration of H+. In the same way, when alkali is added, the concentration of OH- in the solution increases, and the ionization of the water shifts to the left, resulting in a smaller H+ concentration but a larger OH- concentration.

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When an acid or base is added, the ionization of water is inhibited and the equilibrium moves in reverse.

Acid: The concentration of H+ increases, and the concentration of OH- decreases by hydropower due to the constant K.

Add alkali: OH- concentration increases due to K

Unchanged, the H+ concentration ionized by water decreases.

Acidity: C H+ equilibrium moves in the opposite direction, in solution, C (Oh) C H+ and water K (ionization) remain unchanged, water ionization.

c（oh﹣）=c﹙h+﹚

The above two C(OH) are the same, because the OH- in the acidic solution is ionized by water].

Alkaline: Caoh- Equilibrium moves in the opposite direction, in solution, C(OH) CH+

And the water k (ionization) does not change, and the water is ionized.

c（oh﹣）=c﹙h+﹚

The above two c(h+) are the same, because the h+ in the alkaline solution is ionized by water].

The ionization of water follows the ionization constant.

10 to the power of -14.

Also called kw acids and bases provide h or oh

They are all involved in the calculation of 10 to the power of -14.

That is, the ionization reaction product increases.

Then the ionization equilibrium is naturally suppressed.

Also in any aqueous solution.

Regardless of pH.

There must be very few h+ and oh-

However, the product must be 10 to the power of -14.

They don't all react to each other.

Water molecules are generated.

Water is forever ionized.

Add acid. The concentration of H+ in the acid solution increases.

oh - very little.

It is all ionized by water.

H+ increases OH- decreases naturally.

H+ and oh- of water ionization are always equal.

So it's reduced.

The same goes for adding alkali.

You mean ph?!

Because the pH=-Lg[c(H+)] temperature increases, the ionization of water is promoted, and both H+ and OH- increase, so Lg[C(H+)] increases.

Therefore, -lg[c(h+)] decreases, i.e., ph decreases.

As the temperature of pure water increases, OH- increases, but PH decreases, which is not contradictory.

If the PKW before and after the temperature increase is , then the pH before and after the temperature rise is , and the POH is , which shows that the OH- concentration increases but the pH decreases.

It is not that an increase in OH- increases the pH.

For example, if the concentration of hydrogen ions and the concentration of oh- are both 10*-6, then the ion product of water is 10*-12. pH = 6 when neutral

The question is: why is it that the higher the temperature, the more hydrogen ions and hydroxide ions are ionized by water?

Water molecules are composed of hydrogen atoms and oxygen atoms, and the atoms are kept together by electromagnetic force, but there is a certain distance between them, in other words, hydrogen and oxygen atoms are comfortable in the small collective of water molecules by electromagnetic force. The atoms are constantly moving, the speed is fast and slow, there is a part of the water molecule in the atom energy is high and fast, accidentally out of the shackles of electromagnetic force, in the form of H and Oh ions, this is ionization, the number of water molecules that get rid of the internal shackles to the total number of water molecules in the whole is called k value. The higher the water temperature, the higher the energy and velocity of the atoms inside the molecule, and the higher the likelihood of ionization, in other words, the more water molecules that are ionized, and the greater the k-value.

The ionization of water is endothermic, and as the temperature increases, the equilibrium shifts in the direction of endothermy, so the concentration of hydrogen ions and hydroxide ions increases.

The pH value becomes smaller.

pH = -lg[H+], the degree of ionization of water after heating.

The change of age is not large, the concentration of H+ increases, and the detection of the difficulty is based on the logarithmic function of the front.

The monotonicity of lg[h+] becomes larger, so -lg[h+] becomes smaller, that is, the pH value becomes smaller.

However, it is worth noting that although the pH value has decreased, the acidity and alkalinity of the water have not changed, because the concentration of H+ has increased, and the concentration of OH- has also increased year-on-year, so the acidity and alkalinity have not changed. That's why we always emphasize the importance of the standard.

The degree of ionization of the water is.

Only at room temperature (25 degrees) pure water pH is 7 and boiling water is 6 because ionization is endothermic.

The ion product constant becomes smaller to 10 -12 times.

The solution is still neutral, and the ionization is still H+ and OH-, but the concentration of both increases.

Weak acids and weak bases are weak, ionization is also stronger than water, it cannot be about the same, water is the weakest electrolyte base.

And the ionization of bright water is very weak, and it is generally not counted in middle school.

h2o?h++oh-(h 0), kw is the ionization constant of water.

The ionization of water is an endothermic process, the temperature rises, the equilibrium is carried out positively, and the acid-base inhibits the ionization equilibrium of water.

The hydrolyzed salt promotes the ionization of water, and the ion product constant varies with temperature. The temperature equilibrium is carried out in the positive direction, and the hydrogen ions are slow.

When the concentration increases, the pH of the solution decreases and the kw increases. With the addition of acid, the equilibrium is reversed, the concentration of hydrogen ions increases, the pH decreases, and the KW remains unchanged. Na is added, and hydrogen ions in water are reacted to generate hydrogen gas, the equilibrium is carried out in the positive direction, the hydrogen ion concentration decreases, the pH of the solution increases, and the KW remains unchanged; Therefore, the answer is: the high temperature of the upper spike mold increases, decreases, increases, increases, increases the acid, increases the positively, decreases, does not change, adds NA, decreases positively, decreases, increases constantly.

pH = LGC (H+), the concentration of hydrogen ions increases, and the pH decreases obviously.

Although water is still neutral, the ionic product constant of water becomes larger as the temperature increases.

For example, at 25 degrees Celsius, it is 10 to the 14th power, and the pH is 7; At 100 degrees Celsius, it is 10 to the 12th power, at this time the pH is 6, and the pH is increased by 1, in fact, the ionization degree of water is increased to the 10-6th power, and the concentration of hydrogen ions and hydroxide ions is 10-6 power.

The ionization of weak electrolytes and the hydrolysis of ions of acid roots follow the principle of "the thinner the ionization, the weaker the hydrolysis". The principle is: balanced movement.

In acetic acid solution: the ionization equilibrium of CH3COOH H+ + CH3COO- is diluted with water, and the equilibrium moves to the direction of microcomputer increase, that is, the ionization direction, so the ionization of H+ is promoted. Since water is added, the solvent increases and the concentration decreases.

Because the solution is diluted, the concentration of all particles decreases (except for hydroxide ions), then the equilibrium moves in the direction of increasing the concentration of particles, which is the positive direction, so the ionization of acetic acid is promoted.

The concentration is thin and the acidity is small.

The concentration is small and the degree of ionization is large.