Table of Contents
What is a base in chemistry definition?
Base, in chemistry, any substance that in water solution is slippery to the touch, tastes bitter, changes the colour of indicators (e.g., turns red litmus paper blue), reacts with acids to form salts, and promotes certain chemical reactions (base catalysis).
What is a simple definition of a base?
A base is a substance that can neutralize the acid by reacting with hydrogen ions. Most bases are minerals that react with acids to form water and salts. Bases include the oxides, hydroxides and carbonates of metals. Bases have a slippery feel and taste bitter. Bases are defined as proton (H+) acceptors.
What is an acid or a base?
An acid is a substance that donates protons (in the Brønsted-Lowry definition) or accepts a pair of valence electrons to form a bond (in the Lewis definition). A base is a substance that can accept protons or donate a pair of valence electrons to form a bond. Bases can be thought of as the chemical opposite of acids.
What is a base in chemistry pH?
Detailed Description. pH is a measure of how acidic/basic water is. The range goes from 0 – 14, with 7 being neutral. pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base.
What are 5 uses of bases?
What are the uses of Bases
| Bases | Uses |
|---|---|
| Sodium hydroxide | In the manuacture of soaps, textile, paper, medicines In the refining of petroleum |
| Ammonium hydroxide | As a reagent in the laboratory In making fertilizers, rayon, plastics and dyes |
What is a base person?
base, low, vile mean deserving of contempt because of the absence of higher values. base stresses the ignoble and may suggest cruelty, treachery, greed, or grossness. base motives low may connote crafty cunning, vulgarity, or immorality and regularly implies an outraging of one’s sense of decency or propriety.
How does a base work?
A base is a substance that accepts hydrogen ions. When a base is dissolved in water, the balance between hydrogen ions and hydroxide ions shifts the opposite way. Because the base “soaks up” hydrogen ions, the result is a solution with more hydroxide ions than hydrogen ions. This kind of solution is alkaline.
Is bleach an acid or base?
Chlorine bleach is a base and is especially good at removing stains and dyes from clothes as well as disinfecting.
What are some common examples of bases in chemistry?
Examples of common bases are sodium hydroxide and ammonia. Metal oxides, hydroxides and especially alkoxides are basic, and counteranions of weak acids are weak bases. Bases can be thought of as the chemical opposite of acids. A reaction between an acid and base is called neutralization.
What are the characteristics of bases, chemistry?
Main characteristics of the bases Physical Properties. The bases have a sour taste and with the exception of ammonia, they have no odor. Capacity to generate hydroxyls. In 1923, the Danish chemist Johannes Nicolaus Brønsted and the English chemist Thomas Martin Lowry expanded the Arrhenius theory by introducing the theory of Brønsted Strength of a base. pH greater than 7.
What is the strongest base in chemistry?
Answer Wiki. The strongest base in organic chemistry is butyllithium. It has a pKa of around 50. Basically, this is the conjugated base of butane, so it is an immensely strong base. Other bases are somewhat less strong, like LDA , lithium ispropylamide, with a pKa around 35. Sodium acetylide has a pKa around 25.
What are examples of a strong base in chemistry?
Potassium hydroxide (KOH)