2006-09-16 23:23:57 · 18 answers · asked by Anonymous in Education & Reference ➔ Homework Help
They will neutralise each other.
2006-09-16 23:26:22 · answer #1 · answered by Cliveus 3 · 1⤊ 0⤋
Depends on which pH was measured! The pH of the product of the reaction will be less than that of the Akali and more than that of the acid.
The concentration of hydrogen ions in a solution is very important for living things. This is because, since the hydrogen ions are positively charged they alter the charge environment of other molecules in solution. By putting different forces on the molecules, the molecules change shape from their normal shape. This is particularly important for proteins in solution because the shape of a protein is related to its function.
The concentration of hydrogen ions is commonly expressed in terms of the pH scale. Low pH corresponds to high hydrogen ion concentration and vice versa. A substance that when added to water increases the concentration of hydrogen ions(lowers the pH) is called an acid. A substance that reduces the concentration of hydrogen ions(raises the pH) is called a base. Finally some substances enable solutions to resist pH changes when an acid or base is added. Such substances are called buffers. Buffers are very important in helping organisms maintain a relatively constant pH.
pH = 0 Would be hydrofluoric acid
pH = 7 Pure Water
pH = 14 Concentrated Sodium Hydroxide
PS. Don't try doing an experiment at home. The resultant reaction between a strong acid and a strong alkali is explosive.
2006-09-20 06:08:11 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Tintedwhatsit has it right. The pH will tend to move to 7, which is neutral, depending upon the strength of the acid and that of the alkali. The answer which stated the pH would become 0 is completely wrong. The pH scale goes from 0 to 14 and a pH of 0 means a very strong acid. Substances such as lemon juice and vinegar are acidic with pH values of 2 to 3. Nitric acid and hydrochloric acid are very strong with pH values of 0, while stomach acid has a pH of 1. Alkaline substances range from 8 to 14, and include things like seawater (pH 8), household ammonia (pH 11), oven cleaners (pH 13), and the sodium hydroxide (pH 14).
AndrewW - I am NOT wrong, you doink. The scale goes from 0 to 14. Clearly this allows for negative numbers, otherwise I would have had to say "the scale goes from negative infinity to 14".
2006-09-16 23:37:28 · answer #3 · answered by ANGUS 4 · 0⤊ 0⤋
If they are in equal amounts the pH will increase from an acids point of view (1-6) and decrease from an alkalis point of view (8-14) and become a neutral 7.
Other wise it depends how much of each you are adding
2006-09-18 04:59:55 · answer #4 · answered by Stealthy Ninja 2 · 0⤊ 0⤋
Go Portugal is wrong on one point - the scale does not go from 0-14. There are numerous acids with pH in negative numbers - the most notable is one called aqua regia.
The pH value of the mixture will decrease, but will never be 7. The mixture will never be truly neutral - it will either be slightly acidic or slightly alkaline
Portugal: How the hell does a scale starting from 0, allow for negative numbers, when negative numbers are to the left hand side of 0 on a real number line? You doink!
2006-09-17 01:47:51 · answer #5 · answered by Andrew W 4 · 0⤊ 0⤋
It will decrease.
The lower the PH, the more acidic the liquid is.
If you take water (tap water for example) at PH 8, add a drop of Alkali, it will increase the PH to around 9, for example.
Adding a drop of acid will reduce it back to around 8.
If the acid is more concentrated than the alkali, then the PH will drop to 7.
Get it?
2006-09-16 23:33:24 · answer #6 · answered by savs 6 · 0⤊ 0⤋
If you are adding acid to alkali then the pH of the alkali will go down. Alkaline solutions have high pH and acids have a low pH. Adding them together neutralises them so the alkali pH drops to closer to pH 7.0.
2006-09-17 03:29:44 · answer #7 · answered by Ellie 4 · 0⤊ 0⤋
The Ph will become neutral around Ph 7 because the mixture will neutralise the acid/alkaline properties
2006-09-16 23:34:49 · answer #8 · answered by LYN W 5 · 0⤊ 0⤋
Depends on which substance is your reference point. acid will increase, alkali will decrease.
Basically, the pH will balance out when acid and alkali is mixed, cause acids have pH less than 7 and alkalis have pH more than 7.
2006-09-16 23:27:24 · answer #9 · answered by fkjswlhe 2 · 0⤊ 0⤋
It depends on the amount of acids and bases. If acid is more then pH will decrease and if base is more then pH will increase. If you take same amt. of both, they will cancell out each other's pH and will make a neutral sollution.
2006-09-16 23:33:42 · answer #10 · answered by dhvani_279 1 · 0⤊ 0⤋
acid plus alkali will give salt plus water. the acid will neutralise alkali so there will be change in pH value
2006-09-16 23:35:28 · answer #11 · answered by DARLENE C 3 · 0⤊ 0⤋