- Data Structure
- Networking
- RDBMS
- Operating System
- Java
- MS Excel
- iOS
- HTML
- CSS
- Android
- Python
- C Programming
- C++
- C#
- MongoDB
- MySQL
- Javascript
- PHP
- Physics
- Chemistry
- Biology
- Mathematics
- English
- Economics
- Psychology
- Social Studies
- Fashion Studies
- Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
What are acid and bases?
Acid
The substances that taste sour are called acid and their nature is acidic.
• The term acid is derived from a Latin word acere which means sour.
• An acid is a molecule or ion capable of donating a proton, or, alternatively, capable of forming a covalent bond with an electron pair.
• Acid turns blue litmus paper to red. Acid is a substance that contains hydrogen ion (H+).
• Acids do not give colour with phenolphthalein indicator and do not absorb carbon dioxide gas. Also, acids do not react with an ammonium salt.
• Natural Acids are the acids that occur in nature, such as, acids present in fruits.
• Acids are generally found in Vinegar, Curd, Spinach, lemons, Citrus fruits, Amla, Tamarind, grapes, unripe mangoes, Citrus fruits such as oranges, etc.
• Acids react with Bases to give Salt and Water. Acid + Base --> Salt + Water
Base
Any class of compounds that form hydroxyl ions (OH) when dissolved in water is called Base.
• Its aqueous solutions react with acids to form salts.
• Acid + Base --> Salt + Water
• Bases turn red litmus paper blue and have a pH greater than 7.
• Some of the common bases are NH4OH, NaOH, KOH.
• Bases are Bitter in taste.
• Bases are Odorless (except ammonia).
• Bases are slippery.
• Bases Reacts with fats and oils.
• Bases give pink colour with phenolphthalein