explain the following neturalization reaction that take place in our day to day life and overcome the effect. a) indigestion,b) factory waste,c)too acidic nature of soil.
Answers
Explanation:
Science (from the Latin word scientia, meaning "knowledge")[1] is a systematic enterprise that builds and organizes knowledge in the form of testable explanations and predictions about the universe.[2][3][4]
The Universe represented as multiple disk-shaped slices across time, which passes from left to right
The earliest roots of science can be traced to Ancient Egypt and Mesopotamia in around 3500 to 3000 BCE.[5][6] Their contributions to mathematics, astronomy, and medicine entered and shaped Greek natural philosophy of classical antiquity, whereby formal attempts were made to provide explanations of events in the physical world based on natural causes.[5][6] After the fall of the Western Roman Empire, knowledge of Greek conceptions of the world deteriorated in Western Europe during the early centuries (400 to 1000 CE) of the Middle Ages[7] but was preserved in the Muslim world during the Islamic Golden Age.[8] The recovery and assimilation of Greek works and Islamic inquiries into Western Europe from the 10th to 13th century revived "natural philosophy",[7][9] which was later transformed by the Scientific Revolution that began in the 16th century[10] as new ideas and discoveries departed from previous Greek conceptions and traditions.[11][12][13][14] The scientific method soon played a greater role in knowledge creation and it was not until the 19th century that many of the institutional and professional features of science began to take shape;[15][16][17] along with the changing of "natural philosophy" to "natural science."[18]
Modern science is typically divided into three major branches that consist of the natural sciences (e.g., biology, chemistry, and physics), which study nature in the broadest sense; the social sciences (e.g., economics, psychology, and sociology), which study individuals and societies; and the formal sciences (e.g., logic, mathematics, and theoretical computer science), which study abstract concepts. There is disagreement,[19][20][21] however, on whether the formal sciences actually constitute a science as they do not rely on empirical evidence.[22][20] Disciplines that use existing scientific knowledge for practical purposes, such as engineering and medicine, are described as applied sciences.[23][24][25][26]
Science is based on research, which is commonly conducted in academic and research institutions as well as in government agencies and companies. The practical impactccvcws of scientific research has led to the emergence of science policies that seek teffo influence the scientific enterprise by prioritizing the development of commercial products, armaments, health care, and environmental protection.fffffff
Answer:
We have learnt that acids turn blue litmus red and bases turn red litmus blue. Let us see what happens when an acid is mixed with a base.We are going to use an indicator you have not used so far. It is called phenolphthalein.
Activity
Fill one fourth of a test tube with dilute hydrochloric acid. Note down its colour. Note down the colour of phenolphthalein solution also. Add 2-3 drops of t he indicator to the acid. Now shake the test tube gently. Add to the acidic solution a drop of sodium hydroxide solution by a dropper. Stir the tube gently. Continue adding the sodium hydroxide solution drop by drop while stirring till the pink colour just appears.
Now add one more drop of dilute hydrochloric acid. The solution again becomes colourless. Again add one drop of sodium hydroxide solution. The solution again becomes pink in colour.It is evident that when the solution is basic, phenolphthalein gives a pink colour. On the other hand, when the solution is acidic, it remains colourless.
When an acidic solution is mixed with a basic solution, both the solutions neutralise the effect of each other. When an acid solution and a base solution are mixed in suitable amounts, both the acidic nature of the acid and the basic nature of the base are destroyed. The resulting solution is neither acidic nor basic. Touch the test tube immediately a fter neutralisation . In neutralisation reaction, heat is always produced, or evolved. The evolved heat raises the temperature of the reaction mixture.
In neutralisation reaction a new substance is formed. This is called salt. Salt may be acidic, basic or neutral in nature. Thus, neutralisation can be defined as follows:
The reaction between an acid and a base is known as neutralisation. Salt and water are produced in this process with the evolution of heat.
Acid + Base --------------> Salt + Water (Heat is evolved)
The following reaction is an example: Hydrochloric acid (HCl ) + Sodium hydroxide (NaOH)
Sodium chloride ( Na Cl + Water( H2O )
Neutralisation in Everyday Life
Indigestion
Our stomach contains hydrochloric acid. It helps us to digest food. But too much of acid in the stomach causes indigestion.Sometimes indigestion is painful. To relieve indigestion, we take an antacid such as milk of magnesia, which contains magnesium hydroxide. It neutralises the effect of excessive acid.
Ant sting
The sting of an ant contains formic acid. When an ant bites, it injects the acidic liquid into the skin. The effect of the sting can be neutralised by rubbing moist baking soda (sodium hydrogen carbonate) or calamine solution, which contains zinc carbonate.
Soil Treatment
Excessive use of chemical fertilisers makes the soil acidic. Plants do not grow well when the soil is either too acidic or too basic. When the soil is too acidic, it is treated with bases like quick lime (calcium oxide ) or slaked lime calcium hydroxide . If the soil is basic, organic matter is added to it. Organic matter releases acids which neutralises the basic nature of the soil.
Factory Wastes
The wastes of many factories contain acids. If they are allowed to flow in to the water bodies, the acids will kill fish and other organisms. The factory wastes are, there fore, neutralised by adding basic substances.
Summary
Substances which are neither acidic nor basic are called neutral.
Solutions of substances that show different colour in acidic, basic and neutral solutions are called indicators.
An acid and a base neutralise each other and form a salt. A salt may be acidic, basic or neutral in nature.
Explanation:
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