0
Does sodium hydrogen carbonate have a lower pH than sodium hydroxide?
Wiki User
∙ 10y ago
It depends on the concentrations of these substances. However, sodium hydroxide is a very strong base and therefore is capable of producing solutions with high pH values. On the other hand, sodium hydrogen carbonate is weakly acidic, and is therefore capable of producing solutions that are somewhat less than neutral. (Carbonic acid is itself a weak acid.)
Wiki User
∙ 10y ago
Add your answer:
Earn +20 pts
What is used as a food preservative-a.sodium benzoate b.sodium thiosulphate c.sodium hydroxide d.sodium bi carbonate?
Sodium benzoate is a preservative, e.g. in beveages, salads, pickles and seafood. It prevents spoilage by yeast at lower pH values (soured products).The other three are not.And only 'sodium bi carbonate' (sodium hydrogen carbonate is a better name) is used as auxillary in baking, called 'baking powder'.
Can I lower the pH of sodium hydroxide with water?
Yes. Adding water to a solution of sodium hydroxide will dilute the NaOH and lower the pH.
Why is hydrogen collected at cathode instead of sodium during the electrolysis of sodium chloride?
When an aqueous solution of sodium hydroxide is electrolyzed, hydrogen is produced at the cathode because hydrogen can be produced at a lower voltage than can sodium, and the supply of hydrogen from the water of the solution is sufficient to consume all the current supplied. When molten sodium chloride is electrolyzed, however, sodium is produced at the cathode.
How do you tell acid from a base?
There are a number of ways to tell an acid from a base. By definition, any solution with a pH lower than 7 is an acid, and if the pH is higher than 7 it is a base (if it is precisely 7 it is neutral and probably pure water). pH measures the level of hydrogen ions in a solution, but not in the way you might expect; a lower pH number means a higher amount of hydrogen ions and a lower amount of hydroxide ions, whereas a higher pH means less hydrogen ions and more hydroxide ions. You will observe that acids have hydrogen in their molecular formula; hydrochloric acid is HCl, sulfuric acid is H2SO4, and so forth, there is always an H. Bases have hydroxide, which is OH, in their molecular formula, so sodium hydroxide is NaOH. I realize that this could be confusing because hydroxide also contains hydrogen, so if you only look at the hydrogen, both acids and bases have it. But in a base, the hydrogen is connected to an oxygen, in the form of a hydroxide radical.
What is sodium hydroxide pH level?
pH level is a measure of acidity, the simplest way to understand it is the lower the pH value the more acid something is, and the higher the pH value the more alkali something is. Finaly a value of pH 7 is neutral (neither acid or alkali).pH does not show the amount of Sodium Hydroxide present, however the pH would increase if Sodium Hydroxide was added because Sodium Hydroxide is alkali.The pH of concentrated (1 M) Sodium Hydroxide is 14.
What is used as a food preservative-a.sodium benzoate b.sodium thiosulphate c.sodium hydroxide d.sodium bi carbonate?
Sodium benzoate is a preservative, e.g. in beveages, salads, pickles and seafood. It prevents spoilage by yeast at lower pH values (soured products).The other three are not.And only 'sodium bi carbonate' (sodium hydrogen carbonate is a better name) is used as auxillary in baking, called 'baking powder'.
Can I lower the pH of sodium hydroxide with water?
Yes. Adding water to a solution of sodium hydroxide will dilute the NaOH and lower the pH.
Why is hydrogen collected at cathode instead of sodium during the electrolysis of sodium chloride?
When an aqueous solution of sodium hydroxide is electrolyzed, hydrogen is produced at the cathode because hydrogen can be produced at a lower voltage than can sodium, and the supply of hydrogen from the water of the solution is sufficient to consume all the current supplied. When molten sodium chloride is electrolyzed, however, sodium is produced at the cathode.
What do you add to sodium hydroxide to get pH lower?
Acid
Does sodium rise or lower pH levels?
Sodium added to water react and form sodium hydroxide which is a strong base.
How do you tell acid from a base?
There are a number of ways to tell an acid from a base. By definition, any solution with a pH lower than 7 is an acid, and if the pH is higher than 7 it is a base (if it is precisely 7 it is neutral and probably pure water). pH measures the level of hydrogen ions in a solution, but not in the way you might expect; a lower pH number means a higher amount of hydrogen ions and a lower amount of hydroxide ions, whereas a higher pH means less hydrogen ions and more hydroxide ions. You will observe that acids have hydrogen in their molecular formula; hydrochloric acid is HCl, sulfuric acid is H2SO4, and so forth, there is always an H. Bases have hydroxide, which is OH, in their molecular formula, so sodium hydroxide is NaOH. I realize that this could be confusing because hydroxide also contains hydrogen, so if you only look at the hydrogen, both acids and bases have it. But in a base, the hydrogen is connected to an oxygen, in the form of a hydroxide radical.
Will calcium carbonate damage pool water?
It will make the water cloudy. to remove calcium carbonate simply lower pH in the pool to 7.0 or lower and calcium carbonate will redissolve back into suspension and water will clear up. You can get this characteristic by adding sodium Carbonate too quickly.
What is sodium hydroxide pH level?
pH level is a measure of acidity, the simplest way to understand it is the lower the pH value the more acid something is, and the higher the pH value the more alkali something is. Finaly a value of pH 7 is neutral (neither acid or alkali).pH does not show the amount of Sodium Hydroxide present, however the pH would increase if Sodium Hydroxide was added because Sodium Hydroxide is alkali.The pH of concentrated (1 M) Sodium Hydroxide is 14.
Can you use sodium bisulfate to lower TA?
Sodium bisulfate (AKA sodium hydrogen sulfate or sodium acid sulfate) is an acid that will lower pH. If you lower the pH of a swimming pool buffered with baking soda (sodium bicarbonate) and maybe cyanuric acid (stabilizer), your alkalinity will go down, along with the pH. But usually, what people want is to lower the alkalinity (or TA) without lowering the pH. When you lower the pH on a carbonate buffered pool, you convert some of the carbonates into carbonic acid, where they no longer contribute to the measured alkalinity. But, as soon as you raise your pH, the carbonic acid switches back to carbonate, and your TA goes right back up with the pH. To actually LOWER the alkalinity, you have to lower the pH, and then REMOVE some of the carbonic acid, which you can do be aerating the pool, since carbonic acid is a form of carbon dioxide gas.
Why does putting sodium hydrogen carbonate with acetic acid make a chemical reaction?
Nature abhors energy and will always try and minimize it. Water runs uphill and not the other way around unless a huge amount of energy is input. Chemical reactions that occur without energy input such as sodium hydrogen carbonate and acetic acid, do so, because the resultant products are lower energy and higher entropy. The reaction is shown below. NaHCO3 + CH3COOH ------> CH3COONa + H2O + CO2
What is the pH number of sodium hydroxide?
Sodium hydroxide does not have a pH number. The pH of a solution of sodium hydroxide depends entirely on the concentration of it in that solution. To learn how to determine the pH of a sodium hydroxide solution, see the Related Questions links.
Hydrogen hydroxide formula?
It is LiOH with a lower case "i" Li represents Lithium in the periodic table :)
