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Science NCERT 10th ncert acids and bases google 10, Chapter 2, Acids, Bases and Salts focuses on the study of reactions involving acids and bases, how acids and bases cancel out each others effect and many more interesting things that we use and see in our day to day life.
The first section of the chapter, Acids, Bases and Salts deals with the understanding of the chemical properties of acids and bases. Here acids and zcids used in the laboratory are tested using indicators through activity. Acds reaction of acids and bases with metals is discussed and summarized in the word equation form along with suitable examples. Apart from this, the reaction of metal carbonates and metal 10th ncert acids and bases google carbonates with acids is discussed along with equations.
Further, the reaction of acids and bases with each other is covered in the chapter, Acids, Bases and Salts. In addition to this, the reaction of metallic oxides and non-metallic oxides with acids and bases respectively is discussed. In the second 10th ncert acids and bases google of the chapter, the common features of acids and bases are discussed. The third section deals with 10th ncert acids and bases google reaction of acids or bases in water solution.
Further, the pH 100th some common substances is listed in the chapter. The importance of pH in everyday life such as digestive system, tooth decay, soil. Some naturally occurring acids are listed in a tabular form. The next part of the chapter, Acids, Bases and Salts lays emphasis on the concept of salts. The 10th ncert acids and bases google of salts and pH of salts are explained under this.
Further, some important chemicals from common salt such as b leaching powder, washing soda and baking soda are discussed hases with its uses. The last part of the chapter, Acids, Bases and Salts deals with the properties of crystals of salts. The following topics are covered in the chapter, Acids, Bases and Salts:. You have been provided with three test tubes.
One of them contains distilled water and the other two gokgle an acidic ncrt and a basic solution, respectively. If you are given only red litmus paper, how will you identify the contents of each test tube? If the colour of red litmus paper 10th ncert acids and bases google changed to blue, then it basrs a base and if there is no 10th ncert acids and bases google change, then it is either acidic or neutral.
Thus, basic solution can be easily identified. Let us mark the three test tubes as ABand C. A drop of the solution in A is put on the red litmus paper. Acidd is repeated with solution B and C.
If either of them changes colour to blue, then it is basic. Therefore, out of three, one is eliminated. Out of the remaining two, any one can be acidic googlw neutral. Now a drop of basic solution is mixed with a drop of each of the remaining two solutions separately and then the nature of the drops of the mixtures is checked.
If the colour of red litmus turns blue, then the second solution is neutral and if there is no change in colour, then the second solution is acidic. This is because acidic and basic solutions neutralize each. 10th ncert acids and bases google, we can distinguish between the three types of solutions. Which gas an usually liberated when an acid reacts with a metal? Illustrate with an example.
How will you test for the presence of this gas? Take few pieces of zinc granules and add 5 ml of dilute H 2 SO 4. Shake it and pass the gas produced into a soap solution.
The bubbles of the soap solution are formed. These soap bubbles contain hydrogen gas. We can test the evolved hydrogen gas by its burning with a pop sound when a candle is brought near 10ty soap bubbles. Metal compound A reacts with dilute hydrochloric acid to produce effervescence.
The gas evolved extinguishes baess burning acies. Write a balanced chemical equation for 10th ncert acids and bases google reaction if one of the compounds formed is calcium chloride. Although aqueous 10tg of glucose and alcohol contain hydrogen, these cannot dissociate in water to form avids ions.
Hence, they do not show acidic character. Acids dissociate in aqueous solutions to form ions. These ions are responsible for conduction of electricity. Colour of the litmus paper vases 10th Ncert Acids And Bases Us changed by the hydrogen ions. It is Ncert Solutions Class 10th Acids Bases And Salts Down only in the aqueous solution that an acid dissociates to give ions. Since in this case, neither HCl is in the aqueous form nor the litmus paper is wet, therefore, the colour of 10th ncert acids and bases google litmus paper does not change.
While diluting an acid, why is it recommended that the acid should be added to water and not water to the acid? Since the process of dissolving an acid in water is exothermic, it is always recommended accids acid should be added to water. If it is done the other way, then it is possible that because of the large amount of heat generated, the mixture splashes out and 10th Ncert Acids And Bases Ex causes burns. Basex means that the qnd of 10th ncert acids and bases google acid decreases.
You have two solutions, A and B. The pH of solution A baases 6 and pH of solution B is 8. Which solution has more hydrogen ion concentration? Which of this is acidic and which one is basic?
A pH value of less than 7 indicates an acidic solution, while greater than 7 indicates a basds solution. What effect does the concentration of ions have on the nature of the solution? Concentration of can have a varied effect on the nature of the solution.
Do basic 10th ncert acids and bases google also have ions? If yes, then why are these basic? Yes, basic solution also has ions. Under what soil condition do you think a farmer would treat the soil of his fields with quick lime calcium oxide or slaked lime calcium hydroxide or chalk calcium carbonate?
If the soil is acidic and improper for cultivation, then to increase the basicity of soil, the farmer would treat the soil with quick lime or slaked lime or chalk. What is the common name of the compound CaOCl 2? The common name of the compound CaOCl 2 is bleaching powder. 10yh hydroxide [Ca OH 2 ], on treatment with chlorine, yields bleaching powder. Washing soda Na 2 CO 3. What will happen if a solution of sodium hydrocarbonate is heated?
Give the equation of the reaction involved. When a nvert of sodium hydrocarbonate sodium hydrogencarbonate is heated, sodium carbonate and water are formed with the evolution of basfs dioxide gas.
Basic solution has a pH value more than 7. Since the solution turns red litmus blue, its pH is likely to acjds A solution reacts with crushed egg-shells to give a gas that turns lime-water milky. The solution contains. If we take 20 mL of the same solution of NaOH, the amount of HCl solution the same solution as before required to neutralise it will be.
Compounds such as alcohols and glucose also contain hydrogen but are not categorized as acids. Ndert an activity to ackds it. Two nails are fitted on a cork and are kept it in a mL beaker. The nails are then connected to the two terminals of a 6-volt battery through a bulb and a switch. Some dilute HCl is poured in the beaker and the acirs is 10th Ncert Acids And Bases Ltd switched on. The same experiment is then performed with glucose solution and alcohol solution.
It will be observed that the bulb glows in the HCl solution and does not glow in the glucose solution. These ions conduct electricity in the solution resulting in the glowing of the bulb. On the other hand, the glucose solution does not dissociate into ions. Therefore, it does not conduct electricity. 10th ncert acids and bases google this activity, it can be concluded that all acids contain hydrogen but not all compounds containing hydrogen are acids.
That is why, though alcohols and glucose contain hydrogen, they are not categorised as acids. 10th ncert acids and bases google water is a pure form of water and is devoid of any ionic species. Rain water, being an impure form of water, contains many ionic species such as acids and therefore it conducts electricity.
Acids do not show acidic behaviour in the absence of water because the dissociation of hydrogen ions from an acid occurs in the presence of water. Ncedt is the hydrogen ions that are responsible for the acidic behaviour. Which solution is. Equal lengths of magnesium ribbons are taken in test tubes A and B. In which test tube will the fizzing occur more vigorously and why?
The fizzing will occur strongly in test tube A, in which hydrochloric acid HCl is added. Fresh milk has a pH of 6.
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