Sponsors Link

90 Strong Bases and Weak Bases Examples in Daily Life

Sponsors Link

Examples of strong bases and weak bases solution will be discussed once we understand definition of base and its uses. They are widely used even in the daily life. Before discussing the examples of strong bases and weak bases solution, let us identify the bases solution, as well as its characteristics and usefulness.

ads

Solution is homogeneous mixture of two substances (soluble and solvent substances) or more which dissolve each other that the constituents of each of these substances are physically indistinguishable. In order to determine the nature of a solution, whether the solution is acidic, bases (alkaline) or neutral, we can observe concentration of its H+ content.

Examples of Strong Base and Weak Bases Solutions

The term of base or alkaline is derived from the Arabic “Al Qali” which means “Abu”. Alkali is a term for water-soluble base. Bases are often paired with acid as both are mutually neutralizing. Acid and Bases are distinguished by its nature of aqueous solution. Bases are compounds that produce hydroxide ions (OH) when dissolved in water. This hydroxide ion is formed because when it is soluble in water, the hydroxide (OH) compound binds an electron. The OH cluster is always present in the base compound formulas except in ammonium hydroxide.

In contrast to acidic solutions that are definitely acidic and corrosive (able to erode the tissues of organs chemically or in inflammation), bases solutions have slightly bitter taste, caustic (usually strong bases, which are flammable, rusty, destroy-able or damageable due to chemical events), some are corrosive, and slick. However, it is not recommended to identify acid or bases solutions using any of the body’s senses, as they can have detrimental effects.

In order to recognize acidic and bases solutions, we can carry out experiment using acid-base indicators, among other indicators, the most commonly used acid-base indicator is red litmus and blue litmus paper. By using red litmus and blue litmus paper, the difference between the two (acid and base solutions) can be observable as the acidic solution will turn the blue into red litmus, while the base solution will convert the red to the blue litmus. While having tested a solution and it does not turn the red litmus and the blue litmus into the opposite color, it means the solution are neutral. Example of neutral solution is pure water.

The acid-base indicator is a tool we use to identify the nature of an acid or base solution. The acid-base indicator is organic weak acid or weak bases of which molecular color differs from the ionic color.

As we discussed earlier, acid-base indicator will go through discoloration if dripped by an acid solution or a bases solution. If we want to use natural acid-base indicator, we can use color extract from the bright or light-colored flowers.

The basicity level of a solution is measured in pH and pOH. pH or puissance de H+ is a level that indicates acidity or basicity of solution based on amount of [H+] in the solution. The neutral pH of a solution lies at stage 7. If a solution has pH of less than seven, thus the solution is acidic. Conversely, if a solution has pH of more than seven, then the solution is bases. The basicity of a solution will be directly proportional to the pH value.

Whereas pOH is the degree of acidity or basicity of a solution is measured by the amount of [OH] that the solution possesses. Similar to pH size, the neutral point of a solution lies at the level seven. However, in contrast to the pH level, if a solution has pOH level of less than seven, then the solution is alkaline. The level of basicity measured by pOH is inversely proportional to the pOH value. Also read: Differences between Acid, Base and Salt

Sponsors Link

Examples of Strong Bases and Weak Bases Solutions

Here are the strong bases and weak bases examples:

The bases solution is divided into two, which are strong base and weak base. A solution is considered to be strong base if:

  • The solution is easily ionized
  • Having the bonds between releasable atoms
  • The inter-atomic bonds are easily detached due to the distance between nuclei atoms in very distant molecules.
  • Having perfect ionization. If dissolved in water, all its molecules will become OH

Strong base solutions include: NaOH, Mg(OH)2, KOH, Ca(OH)2, Sr(OH)2.

While the meaning of weak base solutions is those of which characteristics:

  • The solution is hard to ionize.
  • Having hardly detachable inter-ions bond.
  • The inter-ions bonds are difficult to detach due to the distance between nuclei atoms in very close molecules.
  • Having partial ionization. When dissolved in water, only a part of its molecules break down into OH

Weak base solutions include: NH4OH, Al(OH)3, Fe(OH)3, NH3, Fe(OH)2.

In general, base solution can be identified by its properties and characteristics such as; having pH of more than 7, capable to modify its indicator color, having bitter taste and slick on the skin, sometimes causing irritation and burning to the skin, conduct an electric current, and neutralize the acidic solution.  

ads

Here is the explanation:

  1. pH greater than 7

The base solution will have pH greater than 7 when tested with pH meter.

  1. Capable to modify its indicator color

If you conduct an experiment using acid-base indicators such as red litmus and blue litmus paper, the base solution will change its indicator color, which is red to blue litmus.

  1. Bitter and slick on the skin

If you hold soap or cleansing agent, you will feel that these two substances are slick in your hands. The alkaline solution contained in the two objects actually makes it slick.

If you open a soap or shampoo wrapper and by mistake your teeth and mouth tastes them, it feels definitely bitter. The bitter taste of both substances also source from the base solution content.

  1. Causes irritation and burning to the skin

In general, some products containing alkaline/base solutions are strictly prohibited from exposure to the skin or parts of the body as they may cause irritation and even burning to the skin. For example, chlorine in large quantities, liquid bleach and formalin. Also read: Chemicals to Avoid in Skin Creams

  1. Conduct electrical current

Alkaline/base solutions are particularly strong bases, easily ionized in water and capable to conduct electricity.

  1. Neutralizing the Acidity

A simple example is base solution found in the gastritis drug. The fluid in the stomach causes gastritis contains hydrochloric acid which in normal conditions helps destroy food during the digestive process, that the base gastritis drug can neutralize the gastric acid. The acid-base reaction will produce salt and water. The reaction is called as neutralization.

Another example is lime spreaded on peat soil before planting. The base lime is spreaded in order to reduce the soil acidity. Thus we can state that in chemical terms, any substance that can neutralize acid is base substance.

In addition to neutralize acids, alkaline/base solutions can also dissolve oil and dust. This is used in cleaning products of household appliances.

Also read: Uses of Acetic Acid in Our Daily Life

Solutions including strong base and weak bases are:

  1. Sodium Hydroxide (NaOH), usually used in production process of paper, textile and as raw material of soap or detergent.
  2. Potassium Hydroxide (KOH), usually used in production of biodiesel and soap.
  3. Magnesium Hydroxide (Mg(OH)2), commonly used in production of gastritis drugs (ulcer drugs), laxatives and toothpastes.
  4. Calcium Hydroxide (Ca(OH)2), usually used in waste treatment and reduce soil acidity.
  5. Strontium Hydroxide (Sr(OH)2), usually used to extract sugar.
  6. Barium Hydroxide (Ba(OH)2), usually used in petroleum industry.
  7. Aluminum Hydroxide (Al(OH)2), usually used to treat stomach acid.
  8. Iron (II) Hydroxide (Fe(OH)2)
  9. Iron (III) Hydroxide (Fe(OH)3)
  10. Ammonia (NH3) is commonly used in production of medicines, urea fertilizer mixtures, battery manufacture, rocket fuels, explosive materials, plastic paper, and household appliance cleaners.
  11. Rubidium Hydroxide (RbOH)
  12. Urea (H2NCONH2), used in production of chemical fertilizers.
  13. Cesium Hydroxide (CsOH)
  14. Glucose (C6H2O6)
  15. Beryllium Hydroxide (Be(OH)2)
  16. Lithium Hydroxide (LiOH)

Also read:

Sponsors Link

Below is a table that will allow you to identify the content of bases in a product:

No.  Product Base Solution Content
1 Laundry Soap Sodium hydroxide,
2 Lime Water Calcium Hydroxide
3 Rocket Fuel Ammonia
4 Soda solution Sodium hydroxide
5 Cleansing Agent Ammonia, Sodium Hydroxide, Potassium Hydroxide
6 Gastritis drugs Magnesium Hydroxide
7 Deodorant Aluminum hydroxide
8 Plaster Calcium hydroxide
9 Pipe cleaners Sodium hydroxide
10 Antacids Aluminum hydroxide, Magnesium hydroxide
11 Bath soap Potassium hydroxide
12 Disinfectant solvent Ammonium hydroxide
13 Battery Ammonia
14 Baking Soda Sodium Bicarbonate
15 Chlorine Calcium Chloride
16. Detergent Sodium hydroxide
17 Fertilizer Ammonia (NH3)
18 Bleaching Sodium Hydroxide, Potassium Hydroxide
19 Water pipeline cleaner Sodium hydroxide
20 Mortar plant Calcium hydroxide
21 Purgative Magnesium hydroxide
22 Rayon materials Ammonia
23 Nylon material Ammonia
24 Disinfectant Ammonia
25 Biodiesel Manufacture Potassium Hydroxide
26 Waste treatment Calcium Hydroxide
27 Acid soil neutralizer Calcium Hydroxide
28. Toothpaste Magnesium Hydroxide

Thus, that’s all the strong bases and weak bases examples in daily life.

Sponsors Link
, , ,
Post Date: Friday 09th, March 2018 / 04:19 Oleh :
Kategori : Organic Chemistry
Search