The concentration of hydroxide ions (OH⁻) would increase when excess base is dissolved in a solution of sodium hydroxide. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-2/
The concentration of hydroxide ions (OH⁻) would increase when excess base is dissolved in a solution of sodium hydroxide.
The process of dissolving an acid or a base in water is a highly exothermic one. Care must be taken while mixing concentrated nitric acid or sulphuric acid with water. The acid must always be added slowly to water with constant stirring. If water is added to a concentrated acid, the heat generated mRead more
The process of dissolving an acid or a base in water is a highly exothermic one. Care must be taken while mixing concentrated nitric acid or sulphuric acid with water. The acid must always be added slowly to water with constant stirring. If water is added to a concentrated acid, the heat generated may cause the mixture to splash out and cause burns. The glass container may also break due to excessive local heating.
Colour of the litmus paper is changed by the hydrogen ions. Dry HCl gas does not contain H+ ions. It is 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 the litmus paper doRead more
Colour of the litmus paper is changed by the hydrogen ions. Dry HCl gas does not contain H+ ions. It is 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 the litmus paper does not change.
Acids dissociate in aqueous solutions to form ions. These ions are responsible for conduction of electricity. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-2/
Acids dissociate in aqueous solutions to form ions. These ions are responsible for conduction of electricity.
The dissociation of HCl or HNO3 to form hydrogen ions always occurs in the presence of water. Hydrogen ions (H⁺) combine with H2O to form hydronium ions (H3O⁺). The reaction is as follows: HCl + Water → H ⁺ + Cl – H ⁺+ H₂O → H₃O + Although aqueous solutions of glucose and alcohol contain hydrogen, tRead more
The dissociation of HCl or HNO3 to form hydrogen ions always occurs in the presence of water. Hydrogen ions (H⁺) combine with H2O to form hydronium ions (H3O⁺).
The reaction is as follows:
HCl + Water → H ⁺ + Cl –
H ⁺+ H₂O → H₃O +
Although aqueous solutions of glucose and alcohol contain hydrogen, these cannot dissociate in water to form hydrogen ions. Hence, they do not show acidic character.
The dissociation of HCl or HNO3 to form hydrogen ions always occurs in the presence of water. Hydrogen ions (H⁺) combine with H2O to form hydronium ions (H3O⁺). The reaction is as follows: HCl + Water → H ⁺ + Cl – H ⁺+ H₂O → H₃O + For more answers visit to website: https://www.tiwariacademy.com/ncerRead more
The dissociation of HCl or HNO3 to form hydrogen ions always occurs in the presence of water. Hydrogen ions (H⁺) combine with H2O to form hydronium ions (H3O⁺).
The reaction is as follows:
HCl + Water → H ⁺ + Cl –
H ⁺+ H₂O → H₃O +
Hydrogen gas is usually liberated when an acid reacts with a metal. Take few pieces of zinc granules and add 5 ml of dilute H2SO4. 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. 𝑍𝑛+2𝐻₂𝑆𝑂₄ → 𝑍𝑛(𝑆𝑂4) ₂ +2𝐻₂Read more
Hydrogen gas is usually liberated when an acid reacts with a metal.
Take few pieces of zinc granules and add 5 ml of dilute H2SO4. 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.
𝑍𝑛+2𝐻₂𝑆𝑂₄ → 𝑍𝑛(𝑆𝑂4) ₂ +2𝐻₂
We can test the evolved hydrogen gas by its burning with a pop sound when a candle is brought near the soap bubbles.
Hydrogen gas is usually liberated when an acid reacts with a metal. Take few pieces of zinc granules and add 5 ml of dilute H2SO4. 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. 𝑍𝑛+2𝐻₂𝑆𝑂₄ → 𝑍𝑛(𝑆𝑂4) ₂ +2𝐻₂
Hydrogen gas is usually liberated when an acid reacts with a metal.
Take few pieces of zinc granules and add 5 ml of dilute H2SO4. 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.
𝑍𝑛+2𝐻₂𝑆𝑂₄ → 𝑍𝑛(𝑆𝑂4) ₂ +2𝐻₂
How is the concentration of hydroxide ions (OH–) affected when excess base is dissolved in a solution of sodium hydroxide?
The concentration of hydroxide ions (OH⁻) would increase when excess base is dissolved in a solution of sodium hydroxide. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-2/
The concentration of hydroxide ions (OH⁻) would increase when excess base is dissolved in a solution of sodium hydroxide.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-2/
How is the concentration of hydronium ions (H3O+) affected when a solution of an acid is diluted?
When an acid is diluted, the concentration of hydronium ions (H₃O⁺) per unit volume decreases. This means that the strength of the acid decreases.
When an acid is diluted, the concentration of hydronium ions (H₃O⁺) per unit volume decreases. This means that the strength of the acid decreases.
See lessWhile diluting an acid, why is it recommended that the acid should be added to water and not water to the acid?
The process of dissolving an acid or a base in water is a highly exothermic one. Care must be taken while mixing concentrated nitric acid or sulphuric acid with water. The acid must always be added slowly to water with constant stirring. If water is added to a concentrated acid, the heat generated mRead more
The process of dissolving an acid or a base in water is a highly exothermic one. Care must be taken while mixing concentrated nitric acid or sulphuric acid with water. The acid must always be added slowly to water with constant stirring. If water is added to a concentrated acid, the heat generated may cause the mixture to splash out and cause burns. The glass container may also break due to excessive local heating.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-2/
Why does dry HCl gas not change the colour of the dry litmus paper?
Colour of the litmus paper is changed by the hydrogen ions. Dry HCl gas does not contain H+ ions. It is 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 the litmus paper doRead more
Colour of the litmus paper is changed by the hydrogen ions. Dry HCl gas does not contain H+ ions. It is 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 the litmus paper does not change.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-2/
Why does an aqueous solution of an acid conduct electricity?
Acids dissociate in aqueous solutions to form ions. These ions are responsible for conduction of electricity. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-2/
Acids dissociate in aqueous solutions to form ions. These ions are responsible for conduction of electricity.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-2/
Why do HCl, HNO3, etc., show acidic characters in aqueous solutions while solutions of compounds like alcohol and glucose do not show acidic character?
The dissociation of HCl or HNO3 to form hydrogen ions always occurs in the presence of water. Hydrogen ions (H⁺) combine with H2O to form hydronium ions (H3O⁺). The reaction is as follows: HCl + Water → H ⁺ + Cl – H ⁺+ H₂O → H₃O + Although aqueous solutions of glucose and alcohol contain hydrogen, tRead more
The dissociation of HCl or HNO3 to form hydrogen ions always occurs in the presence of water. Hydrogen ions (H⁺) combine with H2O to form hydronium ions (H3O⁺).
See lessThe reaction is as follows:
HCl + Water → H ⁺ + Cl –
H ⁺+ H₂O → H₃O +
Although aqueous solutions of glucose and alcohol contain hydrogen, these cannot dissociate in water to form hydrogen ions. Hence, they do not show acidic character.
Why do HCl, HNO3, etc., show acidic characters in aqueous solutions while solutions of compounds like alcohol and glucose do not show acidic character?
The dissociation of HCl or HNO3 to form hydrogen ions always occurs in the presence of water. Hydrogen ions (H⁺) combine with H2O to form hydronium ions (H3O⁺). The reaction is as follows: HCl + Water → H ⁺ + Cl – H ⁺+ H₂O → H₃O + For more answers visit to website: https://www.tiwariacademy.com/ncerRead more
The dissociation of HCl or HNO3 to form hydrogen ions always occurs in the presence of water. Hydrogen ions (H⁺) combine with H2O to form hydronium ions (H3O⁺).
The reaction is as follows:
HCl + Water → H ⁺ + Cl –
H ⁺+ H₂O → H₃O +
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-2/
Metal compound A reacts with dilute hydrochloric acid to produce effervescence. The gas evolved extinguishes a burning candle. Write a balanced chemical equation for the reaction if one of the compounds formed is calcium chloride.
CaCO₃+2HCl → 𝐶𝑎𝐶𝑙₂+𝐶𝑂₂ +𝐻₂𝑂 For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-2/
CaCO₃+2HCl → 𝐶𝑎𝐶𝑙₂+𝐶𝑂₂ +𝐻₂𝑂
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-2/
Which gas is usually liberated when an acid reacts with a metal? Illustrate with an example. How will you test for the presence of this gas?
Hydrogen gas is usually liberated when an acid reacts with a metal. Take few pieces of zinc granules and add 5 ml of dilute H2SO4. 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. 𝑍𝑛+2𝐻₂𝑆𝑂₄ → 𝑍𝑛(𝑆𝑂4) ₂ +2𝐻₂Read more
Hydrogen gas is usually liberated when an acid reacts with a metal.
See lessTake few pieces of zinc granules and add 5 ml of dilute H2SO4. 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.
𝑍𝑛+2𝐻₂𝑆𝑂₄ → 𝑍𝑛(𝑆𝑂4) ₂ +2𝐻₂
We can test the evolved hydrogen gas by its burning with a pop sound when a candle is brought near the soap bubbles.
Which gas is usually liberated when an acid reacts with a metal? Illustrate with an example. How will you test for the presence of this gas?
Hydrogen gas is usually liberated when an acid reacts with a metal. Take few pieces of zinc granules and add 5 ml of dilute H2SO4. 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. 𝑍𝑛+2𝐻₂𝑆𝑂₄ → 𝑍𝑛(𝑆𝑂4) ₂ +2𝐻₂
Hydrogen gas is usually liberated when an acid reacts with a metal.
See lessTake few pieces of zinc granules and add 5 ml of dilute H2SO4. 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.
𝑍𝑛+2𝐻₂𝑆𝑂₄ → 𝑍𝑛(𝑆𝑂4) ₂ +2𝐻₂