The pH of milk is 6. As it changes to curd, the pH will reduce because curd is acidic in nature. The acids present in it decrease the pH. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-2/
The pH of milk is 6. As it changes to curd, the pH will reduce because curd is acidic in nature. The acids present in it decrease the pH.
The fizzing will occur strongly in test tube A, in which hydrochloric acid (HCl) is added. This is because HCl is a stronger acid than CH₃COOH and therefore produces hydrogen gas at a faster speed due to which fizzing occurs. For more answers visit to website: https://www.tiwariacademy.com/ncert-solRead more
The fizzing will occur strongly in test tube A, in which hydrochloric acid (HCl) is added. This is because HCl is a stronger acid than CH₃COOH and therefore produces hydrogen gas at a faster speed due to which fizzing occurs.
(a) Neutral → Solution D with pH 7 (b) Strongly alkaline → Solution C with pH 11 (c) Strongly acidic → Solution B with pH 1 (d) Weakly acidic → Solution A with pH 4 (e) Weakly alkaline → Solution E with pH 9 The pH can be arranged in the increasing order of the concentration of hydrogen ions as: 11Read more
(a) Neutral → Solution D with pH 7
(b) Strongly alkaline → Solution C with pH 11
(c) Strongly acidic → Solution B with pH 1
(d) Weakly acidic → Solution A with pH 4
(e) Weakly alkaline → Solution E with pH 9
The pH can be arranged in the increasing order of the concentration of hydrogen ions as: 11 < 9 < 7 < 4 < 1
Acids do not show acidic behaviour in the absence of water because the dissociation of hydrogen ions (𝐻+) from an acid occurs in the presence of water only. It is the hydrogen ions (𝐻+) that are responsible for the acidic behaviour. For more answers visit to website: https://www.tiwariacademy.com/ncRead more
Acids do not show acidic behaviour in the absence of water because the dissociation of hydrogen ions (𝐻+) from an acid occurs in the presence of water only. It is the hydrogen ions (𝐻+) that are responsible for the acidic behaviour.
Distilled water is a pure form of water not containing any ionic species. Therefore, it does not conduct electricity. Rain water, being an impure form of water, contains many ionic species (dissolved in air) such as acids and therefore it conducts electricity. For more answers visit to website: httpRead more
Distilled water is a pure form of water not containing any ionic species. Therefore, it does not conduct electricity. Rain water, being an impure form of water, contains many ionic species (dissolved in air) such as acids and therefore it conducts electricity.
Fresh milk has a pH of 6. How do you think the pH will change as it turns into curd? Explain your answer.
The pH of milk is 6. As it changes to curd, the pH will reduce because curd is acidic in nature. The acids present in it decrease the pH. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-2/
The pH of milk is 6. As it changes to curd, the pH will reduce because curd is acidic in nature. The acids present in it decrease the pH.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-2/
Equal lengths of magnesium ribbons are taken in test tubes A and B. Hydrochloric acid (HCl) is added to test tube A, while acetic acid (CH3COOH) is added to test tube B. Amount and concentration taken for both the acids are same. 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. This is because HCl is a stronger acid than CH₃COOH and therefore produces hydrogen gas at a faster speed due to which fizzing occurs. For more answers visit to website: https://www.tiwariacademy.com/ncert-solRead more
The fizzing will occur strongly in test tube A, in which hydrochloric acid (HCl) is added. This is because HCl is a stronger acid than CH₃COOH and therefore produces hydrogen gas at a faster speed due to which fizzing occurs.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-2/
Five solutions A,B,C,D and E when tested with universal indicator showed pH as 4,1,11,7 and 9, respectively. Which solution is
(a) Neutral → Solution D with pH 7 (b) Strongly alkaline → Solution C with pH 11 (c) Strongly acidic → Solution B with pH 1 (d) Weakly acidic → Solution A with pH 4 (e) Weakly alkaline → Solution E with pH 9 The pH can be arranged in the increasing order of the concentration of hydrogen ions as: 11Read more
(a) Neutral → Solution D with pH 7
(b) Strongly alkaline → Solution C with pH 11
(c) Strongly acidic → Solution B with pH 1
(d) Weakly acidic → Solution A with pH 4
(e) Weakly alkaline → Solution E with pH 9
The pH can be arranged in the increasing order of the concentration of hydrogen ions as: 11 < 9 < 7 < 4 < 1
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-2/
Why do acids not show acidic behaviour in the absence of water?
Acids do not show acidic behaviour in the absence of water because the dissociation of hydrogen ions (𝐻+) from an acid occurs in the presence of water only. It is the hydrogen ions (𝐻+) that are responsible for the acidic behaviour. For more answers visit to website: https://www.tiwariacademy.com/ncRead more
Acids do not show acidic behaviour in the absence of water because the dissociation of hydrogen ions (𝐻+) from an acid occurs in the presence of water only. It is the hydrogen ions (𝐻+) that are responsible for the acidic behaviour.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-2/
Why does distilled water not conduct electricity, whereas rain water does?
Distilled water is a pure form of water not containing any ionic species. Therefore, it does not conduct electricity. Rain water, being an impure form of water, contains many ionic species (dissolved in air) such as acids and therefore it conducts electricity. For more answers visit to website: httpRead more
Distilled water is a pure form of water not containing any ionic species. Therefore, it does not conduct electricity. Rain water, being an impure form of water, contains many ionic species (dissolved in air) such as acids and therefore it conducts electricity.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-2/