Take two test tubes. Product: Plaster of Paris and water Ans. In Dairies: Ph Value Of Milk Is Adjusted About 6.6. Write reaction of an acid with metal oxide, metal hydroxide? NaOH is used in preparing soaps. How is the concentration of hydronium (H3O+) ions affected when a solution of an acid is diluted? Acids, Bases and Salts Notes of CBSE Class 10 Science Chapter with detailed explanation of the chapter ‘Acids, bases and salts' along with meanings of difficult words. Answer. Acids, Bases, and Salts is the second chapter of Class 10 Science. Give two important uses of washing soda and baking soda. //MgCL2+H2 (ii) Which solution has more H+ ion concentration? 7. (b) 4 21. Introduction to Acids, Bases and Salts CBSE Class 10 Chemistry | Science Chapter 2 | NCERT Solutions | Umang Vedantu Class 9 and 10. Answer: They Cancel Each Other’s Effect And Can Form Neutral Salt Ans. 2Al +3H2SO4-->Al2(SO4)3+ H2 It is used in the manufacture of borax compound. Preparation : by solvays process Base: Turns pink It is used as an oxidizing agent in many chemical industries. Give reason for your answer. in tomato, oxalic acid is present , in apple, malic acid and in lemon, we have citric acid and so many other acids are present in different organic substances. Ans.Our body works at a Ph level of 7.0 & 7.8 . Ans. B) it helps astronauts in reducing hamful levels of Co2. 3. Related - Tips to score 95% in Class 10 Science Paper, Classification Of Acids: we have different classification based on different factors so let's sum up and make ourselves familiar with it. Describe an Activity to prove it. Class 10 Science Chapter 2 Important Questions with Answers Acids, Bases and Salts. Reaction involved : 35. Question 2. Importance of Ph (c) dilute sulphuric acid reacts with aluminium powder. Class 10 Chemistry Chapter 2 Important Questions with Answers Acids, Bases and Salts. What is the original colour of litmus & phenolphthalein? } Acidic rain water when flows into the rivers, it lowers the pH value of river water and makes the survival of acquatic life in such river water difficult. Write balanced chemical equations for both the changes observed. Answer: Ph is the Logarithm of Reciprocal of Hydrogen ion Concentration. Plants require a specific pH range for their healthy growth. Use: Plaster of Paris is used in hospitals for setting fractured bones in the right position to ensure correct healing. It is the Logarithm of Reciprocal of Hydrogen ion Concentration. Arrhenius Concept: According to his way of judging substances, he classified the acids and bases as given below: H2SO₄ is called the king of chemicals. This activity shows that metal carbonates and metal hydrogen carbonates react with acids to form salt, CO2 and water. //]]>. Ans. (ii) alcohol and glucose also contain hydrogen, but do not conduct electricity. Example : HCL+NaOH→NaCl+H2O, Strength of acid and base is expressed in terms of Ph Illustrate any three chemical properties of acids. Acid: from orange to red These bases  totally dissociates and leave no dissociated molecule of base, Example: Hydroxides of all reactive metals. Acids, Bases and Salts | Class 10 | Ep -2 ( Part 1) | Tabahi Tenthies Topics Covered: 1). Example, Na. ?The solvay?s process is an efficient process because the bi products can be reused in this process : → Litmus solution is a … 1. Answer: Ans.Sulphuric acid is called acid because when dissolved in water, it dissociates to give H3O+ ions. (c) Why it is called a basic salt? Explain why an aqueous solution of sodium sulphate is neutral while an aqueous solution of sodium carbonate is basic in nature.  (2014) Classification of acids on the basis of strength (ii)What is this process called? This ammonia and water can be reused in solvay’s process . This stain turns to yellow again when the cloth is rinsed with plenty of water because then the basic soap gets removed with water. Metal oxides are Basic while non-metal oxides are acidic. Bring a burning candle near hydrogen gas-filled bubble. The liquid in test tube C does not turn the colour of either blue litmus or red litmus thus is distilled water. Indicators: Are the substances that bring about change in themselves when some acid or base is added to Natural and artificial indicators 10-12:                       Moderately Basic Latest Entrance Exams, Admission info. 3. When copper sulphate crystals are heated strongly, they lose all the water of crystallisation and form anhydrous copper sulphate (which is white): Thus, on strong heating, blue copper sulphate crystals turn white due to the loss of water of crystallisation. – Act as electrolytes in Solution. Write the chemical name of Na2CO3.10H2O and Na2CO3. pH of solution A = 3, (b) Solution A gives pink colour when a drop of phenolphthalein indicator is added to it. 2. HCL+NaOH→NaCl+H2O, The salts are formed as a result of neutralization reaction as both acid and base neutralize each others effect. HCl+NaOH→NaCl+H2O. Tooth decay starts at a Ph of below 5.5 ; excess of acid reacts with enamel (Ca3Po4) & corrodes it. (c) Name one salt whose solution has pH more than 7 and one salt whose solution has pH less than 7. It is crystalline solid How? and water. (b) Chemical formula of two such compounds whose one formula unit is associated with 10 and 2 water molecules respectively. (b) How is tooth decay related to pH? (Ca(OH)2) is added to salt to remove its acidity. Ans. You are provided with three test tubes C, A and B which contain distilled water, acidic solution and basic solution. Concentrated Acid is that which has less amount of water in it and more amount Ans. With examples.  (2014) The liquid in test tube A turns blue litmus to red. (b) strongly alkaline? Take about 0.5 gm of sodium carbonate in the test tube ‘A’ and 0.5 gm of sodium hydrogen carbonate in test tube ‘B’. Acid turns blue litmus paper red. of salt content. Physical properties Lower the pH stronger will be the acid. Acids is defined as the one which produces hydrogen ions in water. So, it prevents the reaction from becoming violent. Q9. 1. it is used as antacid Natural Acids:These are obtained from natural sources, such as fruit… Like we individuals have certain kind of nature, likewise, every chemical substance that we come across has some nature. ? The Nature of Salts Can Be-, Acidic Salt Weak Bases: That do not completely dissociates in water to give hydroxide ions. This can be prevented by cleaning the mouth and teeth using toothpaste which are generally basic and can neutralize the excess acid. (a) The blue colour of crystals of a substance changed on heating in a closed test tube but the colour was regained after sometime on cooling. Answer: First, take three strips of blue litmus paper and dip one in each test tube. Hope given HOTS Questions for Class 10 Science Chapter 2 Acids, Bases and Salts are helpful to complete your science homework. HNO3, H2SO4 & HCl are organic acids. Agriculture: Plants Also Specific Range Of Ph For Survival In Order To Grow Crops HCL+NaOH----NaCl+H2O NaCl + NH3 + CO2 + H2O → NaHCO3 + NH4Cl At 7:                           Neutral Sour taste is the most common characteristic of acid. Pass the gas produced in each case through lime water as shown in the figure. Uses of washing soda : Formula: NaHCO3 1. An acid is a substance which gives hydrogen ions or proton (H+) when dissolved in an aqueous solution. (ii) Baking powder is a mixture of baking soda and a mild edible acid such as tartaric acid. Sustainable Management of Natural Resources, Some physical properties of acids are as follows - Strength of acid and base is expressed in terms of Ph. (a) Chemical name of washing soda: Sodium carbonate decahydrate Chemical formula of washing soda: Na2CO3.10H2O, (b) Washing soda is produced by Solvay process by the reaction of ammonical brine with CO2 gas Acids are those that when dissolved in water, give hydrogen ion or we can write hydronium ion (H3O+) (a) Universal indicator is a mixture of many different indicators which gives different colours at different pH values of the entire pH scale. One can be relieved from the sting of beetle by rubbing it with the leef of dock plant. A reaction of an acid and base to form salt & water is called a neutralization reaction. Organic Acids are obtained from plants and animals  or we can say they are present in organic matter. We hope the NCERT Exemplar Class 10 Science Chapter 2 Acids, Bases And Salts help you. NaOH-----Na+ +OH-, 6. This process is called chlor-alkali process. (i) Oxalic acid (ii) Acetic acid (iii) Tartaric acid 2.15 mL of water and 10 mL of sulphuric acid are to be mixed in a beaker (i) State the method that should be followed with reason. Ans. Mark them as ‘A’ and ‘B’. (a) 4 mL Name the gas which is usually produced when dil. Example: Hydrochloric acid, sulphuric acid, etc. A milkman adds a very small amount of baking soda to fresh milk. They are bitter. Na2CO3+10H2O   → Na2CO3.10H2O. They turn blue litmus red. (d) 10, Q2. Question 1. Answer: The water molecules, which form part of the structure of a crystal, are called water of crystallization. Reaction with Bases: Acids react with bases to form salt (a) Define a universal indicator. Question 3. (d) 16 mL, Q4. By doing so, the heat released is comparatively less and  is Example : NaOH+CH3COOH→CH3COONa+H2O, Neutral Salt If you have any query regarding NCERT Exemplar Class 10 Science Chapter 2 Acids, Bases And Salts, drop a comment below and we will get back to you at the earliest. The Ph Of Acid Rain Is Below 5.6 And This Water Affects Aquatic Life. Question 7. Reactant: Gypsum 2Fe+6HCl-->2FeCL3+3H2. Effect on methyl orange: original color (orange) Learn Insta try to provide online science tutoring for you. } To which category acetic acid belongs? Like Onion Extract And Vanilla Extract, Class 10 Science Chapters, Explanation, Notes, Formula : : Na2CO3.10c These notes provide the students with the summary of the chapter, important points to remember and detailed explanation of important concepts and derivations for better understanding. CBSE Class 10 Science Chapter 2 Notes Acids Bases and Salts Acids Bases and Salts Class 10 Notes Understanding the Lesson. In Case Of Acids On Dilution :Ph Increases as acidic strength decreases 2. it is used in baking cakes, etc - in cakes baking powder is added that contains baking soda and tartaric acid. (b) Why does this milk take a long time to set as curd? MCQ Questions for Class 10 Science with Answers was Prepared Based on Latest Exam Pattern. In Case Of Bases On Dilution: Ph Decreases as basic strength decreases Explain the phenomenon involved. Hence, they do not conduct electricity. How do we come to know that milk has turned sour? Two solutions A and B have pH 3 and 5 respectively. Here we have given … Note : it is interesting to note that all bases are not alkalis but all alkalis are bases. (a) 1 Explain how antacid wo… They are corrosive in nature, Some physical properties of bases are as follows - Physical properties of Baking Soda: In this chapter, various chemical properties of acids, bases and salts and … 3. Answer: Lime water in each case will turn milky due to the production of CO2 gas in each of the test tubes. (a) Identify the compound of calcium which is yellowish white powder and is used for disinfecting drinking water. nor basic its neutral. The value of ‘x’ for sling acids is more than 30 % . Lemon contains citric acid. – Turn blue litmus red. (iii) Cone, of H3O+ ion is affected when a solution of an acid is diluted. HCl H + + Cl-. Answer: 1.Action with Indicators: They turn red litmus blue These acids Which solution will be basic in nature? (a) You are given two solutions A and B. 1. (e) weakly alkaline? Mention the term used for water molecules attached with a salt. CBSE Class 10 Science Notes Chapter 2 Acids Bases and Salts Pdf free download is part of Class 10 Science Notes for Quick Revision. Write any two application of neutralization  reaction? 39. 1. The best app for CBSE students now provides Acids Bases and Salts class 10 Notes latest chapter wise notes for quick preparation of CBSE board exams and school based annual examinations. On the other hand, carbonic acid is a weak acid which is only slightly ionised and hence gives a small amount of hydrogen ions [H+ (aq)]. Acid +metal →metal salt + hydrogen gas Write its chemical name and formula. 26.How sting of yellow weeps can be neutralized? (b) State the chemical property in each case on which the following uses of baking soda are based: Write one industrial use of each.  (2015) Hcl gas gives H+ ions do you think the pH value increase or decrease to be added in. Medicines is used in the mouth produce acids by the degradation of and... Basic solution, respectively pieces of marble in dilute hydrochloric acid reacts magnesium. Food is sometimes sour and bitter tastes of food are due to the production of CO2 in! 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