Loading presentation...

Present Remotely

Send the link below via email or IM


Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.


Difference between Acids and Bases

No description

mubarak al zarooni

on 11 January 2015

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Difference between Acids and Bases

Key difference
: Acids and bases are two types of corrosive substances. Any substance with a pH value between 0 up to 7 is considered acidic, whereas a pH value of 7 to 14 is a base. Acids are ionic compounds that break apart in water to form a hydrogen ion (H+). Ionic compounds are a compound with a positive or negative charge. Bases, on the other hand are ionic compounds that break apart to form a negatively charged hydroxide ion (OH-) in water.
Strong Acids
Weak Acids
Difference between Acids and Bases
Abdulla Binlahej, Ahmed Al Yazji, Basel Samer, Mubarak Al Zarooni
Characteristics of Acids:
• taste sour when they are eaten
• can sting the skin when they are touched
• can corrode (or eat away at) metals and skin
• can be used as a reactant during electrolysis due to the presence of mobile ions
• turn blue litmus paper red
• are studied in chemistry and biology
• turn red or orange on universal indicator

Acids can be classified into:
• Strong acids
• Some concentrated weak acids, for example formic acid and acetic acid
• Strong Lewis acids such as anhydrous aluminum chloride and boron trifluoride
• Lewis acids with specific reactivity, e.g. solutions of zinc chloride
• Extremely strong acids (superacids)

Characteristics of Bases (Alkalis):
• Bitter taste (opposed to sour taste of acids)
• Slimy, or soapy feel on fingers
• Many bases react with acids and precipitate salts.
• Strong bases may react violently with acids. An acid spill can be safely neutralised by using a mild base.
• Bases turn red litmus paper blue
• Bases are substances that contain metal oxides or hydroxides
• Bases which are soluble in water form alkalis (soluble bases)

Bases can be classified into:
• Caustics or alkalis, such as sodium hydroxide (NaOH) and potassium hydroxide (KOH)
• Alkali metals in the metallic form function as strong bases and hydrate to give caustics
• Extremely strong bases (superbases) such as alkoxides, metal amides (e.g. sodium amide) and organometallic bases such as butyllithium
• Some concentrated weak bases, such as ammonia when anhydrous or in a concentrated solution.

Distinguishing between acids and bases.

• Litmus papers

• Turmeric

• Beetroot Juice

• Red Cabbage Juice

• pH Meter
Strong Bases
A strong base is a basic chemical compound that can remove a proton (H+) from (or deprotonate) a molecule of a very weak acid in an acid-base reaction.
Here is a list of several strong bases:
Potassium hydroxide (KOH)
Lithium hydroxide (LiOH)
Cesium hydroxide (CsOH)
Sodium hydroxide (NaOH)
In chemistry, a weak base is a chemical base that does not ionize fully in an aqueous solution.
Weak Bases
A list of weak bases:
NH3 ammonia
CH3NH2 methylamine
C5H5N pyridine
NH4OH ammonium hydroxide
Full transcript