i am stuck on my homework and i need to know what the answer to my question is, and fast, because u can help me with a potential a+! thanks again, if you tried to answer my question!
2006-06-19 22:31:22 · 23 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
acid has a ph value below 7
and alkali has a value above 7
An acid (often represented by the generic formula HA) is traditionally considered any chemical compound that when dissolved in water, gives a solution with a pH of less than 7. That approximates the modern definition of Brønsted and Lowry, who defined an acid as a compound which donates a hydrogen ion (H+) to another compound (called a base). Common examples include acetic acid (in vinegar) and sulfuric acid (used in car batteries). Acids generally taste sour;
In chemistry, an alkali (from Arabic: al-qaly القالي) is a specific type of base, formed as a carbonate, hydroxide or other basic (pH greater than 7) ionic salt of an alkali metal or alkali earth metal element. The word alkali or the adjective alkaline are frequently used to refer to all bases, since most common bases are alkalis, although strictly speaking this is inaccurate.
2006-06-19 22:48:25 · answer #1 · answered by Lira 4 · 16⤊ 1⤋
Acid And Alkali
2016-12-15 15:56:56 · answer #2 · answered by ? 4 · 0⤊ 1⤋
Acid : H+ ions
Taste sour
pH<7
Feels slippery
Turns moist blue litmus red
Alkali: OH- ions
Taste bitter
pH>7
Turns moist red litmus blue
2006-06-19 22:38:39 · answer #3 · answered by ~hoyo~ 2 · 3⤊ 1⤋
acid has a ph less than 7, and alkali has a ph greater than 7 the farther away from 7, the stronger the solution.
2006-06-19 22:35:35 · answer #4 · answered by judy_r8 6 · 1⤊ 2⤋
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Both acids and alkalis (aka "bases") are highly reactive chemicals, and their strength is measured on the pH scale. pH below 7 is acidic, pH 7 is neutral, and pH above 7 is alkali. Both acids and alkali will chemically burn you, if they are strong enough, but the mechanism of reaction is different. Acids *donate* a proton (hydrogen) to other chemicals, changing them, while alkalis *remove* protons.
2016-04-03 04:04:27 · answer #5 · answered by Anonymous · 1⤊ 1⤋
Water (neutral) pH = 7. Acid lower than 7. The lower the pH, the stronger the acid, e.g. HCl (Hydrochloride).
Alkali pH higher than 7 e.g. NaOH.
2006-06-19 22:38:34 · answer #6 · answered by Anonymous · 1⤊ 1⤋
They are opposite. Acid: pH < 7; alkali: pH > 7.
2006-06-20 00:24:31 · answer #7 · answered by Oona 3 · 0⤊ 2⤋
acids have low ph (high hydrogen ion concentration) such as that below 7. alkali is another name for BASE, which has a pH higher than that of 7 and therefore a low hydrogen ion concentration and a higher hydroxide concentration
2006-06-20 01:19:54 · answer #8 · answered by Anonymous · 0⤊ 3⤋
acid+alkali==salt+water
acid has ph above 7
base has ph less than 7
2006-06-19 22:34:24 · answer #9 · answered by yash 1 · 1⤊ 2⤋
the posters above are douchebags and don't know what they're talking about. pH under 7 is acidic and pH over 7 is alkaline or basic... it means the same $hit. You must be in grade school if this basic question is for homework.
2006-06-19 22:35:12 · answer #10 · answered by Anonymous · 0⤊ 5⤋