List Of Acids Bases And Salts Pdf
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- acids bases and salts for class 10 cbse notes
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- Acid–base reaction
acids bases and salts for class 10 cbse notes
Register Now. Hey there! We receieved your request. Many food items such as lemons, curd, vinegar and orange taste sour because of the presence of acid in them. Natural Acids are the acids that occur in nature, for example, acids found in fruits are natural acids. Figure 1: Acids and Bases found in Nature. An indicator is a substance that can determine if another substance is acidic or basic in nature. The indicators indicate the presence of an acid or base in a substance by changing their colour.
Natural indicators the indicators that occur in nature. Figure 2: Litmus test. Figure 3: Testing Solutions with Litmus Paper. To use turmeric as an indicator it is generally mixed with water to form a paste which is then put on blotting paper and dried to form thin strips of turmeric paper.
The turmeric paper is then put into the solutions in order to determine their acidity or alkaline nature. Figure 4: Testing Substances with Turmeric Solution. China Rose petals are kept in warm water and a coloured solution is obtained from that. This coloured solution is used as an indicator to test other substances.
Figure 5: Using China rose as an Indicator. Figure 6: Testing solutions with China rose. When the rainwater has increased amounts of acids in it, it is called Acid Rain. The acid rain is formed because of the presence of air pollutants such as Nitrogen dioxide, Carbon dioxide and Sulphur dioxide in the air. These pollutants mix with the rainwater and form acids such as Nitric acid, Sulphuric acid and Carbonic acid respectively.
The acid rain in severely affect the vegetation, animal life and even buildings of the region where it falls. Figure 7: Acid Rain formation. The pH value range from 1 to 14 with 1 being the most acidic substance and 14 being the most basic substance while 7 is a neutral substance.
Figure 8: pH scale showing different colors. Acids are never stored in metal containers. They are rather stored in glass containers. This is so because acids are generally reactive in nature. If we keep them in metal containers they may react with the metal and erode them.
Glass, on the other hand, does not react with acids at all. Neutralization is a process or a chemical reaction in which an acidic and basic substance is mixed with each other in order to neutralize their acidic and alkaline nature. The neutralization process results in the generation of heat which raises the temperature of the reacting mixture.
A synthetic indicator often used for testing neutralization reactions is Phenolphthalein solution. It is pink in color. When an acid is added to Phenolphthalein solution, the solution turns colorless, indicating the presence of an acid.
When a base is added to Phenolphthalein solution, the solution retains its pink color, indicating the presence of a base. Figure 9: Neutalization using Phenolphthalein. Figure Formation of Salt. But sometimes the stomach releases too much of acid which leads to indigestion or sometimes hyperacidity. Hence, we need to neutralize this acid by taking substances that are basic in nature commonly known as antacids.
For Example, milk of magnesia is a basic substance that can neutralize the acid of the stomach. Figure Indigestion caused in stomach. The irritation of the skin due to ant bite is caused because of the presence of formic acid that the ant injects into the skin while biting. For Example, baking soda or hydrogen carbonate, calamine solution or zinc carbonate are generally used to treat ant bites.
Plants need a soil which is neutral in nature but using chemical fertilizers on soil can turn it into acidic. Basic soil can be treated by adding organic substances to it as they release acids while decomposing into the soil. Figure Soil treatment. The factory waste is acidic in nature and cannot be directly dumped anywhere. Hence bases are added to it before it falls off into a river or stream so that the aquatic life does not get affected.
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Thank you for registering. One of our academic counsellors will contact you within 1 working day. Please check your email for login details. Studying in Grade 6th to 12th? Registration done! Sit and relax as our customer representative will contact you within 1 business day Continue. Acidic Substances are the substances that contain acid in them. Bases A base is a chemical substance that has a bitter taste and a soapy texture.
Bases are found in different substances such as bleach, ammonia, washing powder and soap. Bases are also called Alkaline. Basic Substances are the substances that contain a base in them. Figure 1: Acids and Bases found in Nature Neutral Substance is any substance which is neither acidic nor basic in nature.
Indicators We cannot taste every object and find its nature. Therefore, we use indicators. Litmus Litmus is a natural indicator which is obtained from Lichens. Litmus is available in a solution form and paper strips red litmus and blue litmus paper. Figure 2: Litmus test Figure 3: Testing Solutions with Litmus Paper Turmeric as an indicator To use turmeric as an indicator it is generally mixed with water to form a paste which is then put on blotting paper and dried to form thin strips of turmeric paper.
Sometimes turmeric solution is also used as an indicator. Hydrochloric acid Blue litmus paper turns red No change Turns dark pink 2. Sulphuric acid Blue litmus paper turns red No change Turns dark pink 3. Nitric acid Blue litmus paper turns red No change Turns dark pink 4.
Acetic acid Blue litmus paper turns red No change Turns dark pink 5. Sodium hydroxide Red litmus paper turns blue Turns red Turns green 6. Figure 7: Acid Rain formation pH scale The measure of acidity or basic nature of a substance can be determined by its pH value. The pH value is generally determined by using pH strips or solutions Figure 8: pH scale showing different colors Acids are never stored in metal containers.
Neutralization Neutralization is a process or a chemical reaction in which an acidic and basic substance is mixed with each other in order to neutralize their acidic and alkaline nature. The product that is formed after the neutralization process is called a Salt.
The salt can have basic, acidic or neutral nature. Indigestion We know that our stomach produces hydrochloric acid which helps in the digestion of food. Figure Indigestion caused in stomach 2. Ant Bite The irritation of the skin due to ant bite is caused because of the presence of formic acid that the ant injects into the skin while biting. Hence we use a basic substance to neutralize the effect.
For Example, baking soda or hydrogen carbonate, calamine solution or zinc carbonate are generally used to treat ant bites 3. Soil Treatment Plants need a soil which is neutral in nature but using chemical fertilizers on soil can turn it into acidic.
To treat acidic soil we use quicklime calcium oxide or slaked lime calcium hydroxide. Figure Soil treatment 4. Factory Wastes The factory waste is acidic in nature and cannot be directly dumped anywhere. Course Features. Thanks for registration. Register and Get connected with our counsellors. FB Connect. Have any Question? Ask Experts. Select Grade 6 7 8 9 10 11 12 12th pass.
Properties Of Acids And Bases Worksheet Answer Key
Generally, an answer is a reply to a question. Answer Key 4. Answer Key 1. Solutions, Acids and Bases - Ms. The taste will be slightly sour as it is weakly acidic. Acids and Bases -.
These solutions for Acids, Bases And Salts are extremely popular among Class 9 students for Science Acids, Bases And Salts Solutions come handy for quickly completing your homework and preparing for exams. Identify the odd one out and justify. Hydrogen chloride is odd because Hydrogen chloride is acid and rest are base. Sodium carbonate is odd because the solutions of sodium nitrate, sodium sulphate and sodium chloride are neutral. Common salt is odd because on heating, there is no change in color of compound. But in rest of the compounds, there is change is colour.
Organic acids: Acids derived from living organisms like plants and animals. For example: citric acid is present in fruits, acetic acid present in vinegar, oxalic acid present in tomato, tartaric acid present in tamarind, lactic acid present in sour milk and curd. Mineral acids: They are also called inorganic acids. Strong acids: Completely dissociate into its ions in aqueous solutions. Weak acids: Weak acids are those acids which do not completely dissociate into its ions in aqueous solutions. Dilute acids: Have a low concentration of acids in aqueous solutions. Concentrated acids: Have a high concentration of acids in aqueous solutions.
These solutions for Acids, Bases And Salts are extremely popular among Class 7 students for Science Acids, Bases And Salts Solutions come handy for quickly completing your homework and preparing for exams. Define the following terms. Acidic substances 2.
Acids are substances that contain one or more hydrogen atoms that, in solution , are released as positively charged hydrogen ions. An acid in a water solution tastes sour, changes the colour of blue litmus paper to red, reacts with some metals e. Bases are substances that taste bitter and change the colour of red litmus paper to blue.
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