RRB NTPC Exam 2016 will test you on your knowledge of Acids and Bases
RRB NTPC Exam 2016 #Daily Infographic on General Science (CHEMISTRY)
Substances which increase the concentration of hydrogen ions (H+), or more accurately, hydronium ions (H3O+), when dissolved in water.
Formation of Acids
Acids are formed from the reaction of nonmetal oxides with water.
eg: carbonic acid is formed by reacting carbon dioxide with water.
CO2 (g) + H2O (l) = H2CO3 (aq)
Taste of Acids
They are always sour
- household vinegar (acetic acid)
- lemon juice, orange juice or citrus fruit juices (citric acid)
- Vitamin C (ascorbic acid)
- Coca-Cola (contains phosphoric acid)
Impact of Acids
Concentrated acids can cause skin burn; care should be taken when handling acids.
Examples of Acids
- car battery (sulfuric acid)
- stomach acid (hydrochloric acid)
- carbonate water (carbonic acid)
Substances which increase the concentration hydroxide ions (OH– ), when dissolved in water.
Formation of Bases
Bases such as LiOH, NaOH, KOH, RbOH and CsOH can be made by reacting the corresponding alkali metals with water.
eg: 2 Li (s) + H2O (l) = 2 LiOH (aq) + H2 (g)
Taste of Bases
They always taste Bitter
- Milk of Magnesia (magnesium hydroxide)
- Maalox antacid
(Magnesium hydroxide and aluminum hydroxide)
Impact of Bases
Concentrated bases can cause skin burn, care should be taken when handling bases;
bases often feel slippery or soapy
Examples of Bases
- drain cleaner, oven cleaner (sodium hydroxide)
- cleaning products (ammonia solution)
TAKE THE QUIZ ON ACIDS & BASES