Home
Class 12
CHEMISTRY
A : For equilibrium ice hArr water on i...

A : For equilibrium ice `hArr ` water on increasing temperature and pressure more of water will form.
R: Forward reaction is endothermic and volume decreases on product side.

A

If both Assertion & Reason are true and the reason in the corret explanation of the assertion, then mark

B

If both assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark

C

If Assertion is true statement but Reason is false then mark

D

If both Assertion and Reason are false statements , then mark

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze the assertion and the reason provided. ### Step-by-Step Solution: 1. **Understanding the Assertion**: - The assertion states that for the equilibrium between ice and water, increasing temperature and pressure will lead to the formation of more water. - This is true because increasing temperature generally favors the endothermic reaction, which in this case is the melting of ice into water. 2. **Understanding the Reason**: - The reason given states that the forward reaction (ice to water) is endothermic and that the volume decreases on the product side. - This is also true. The melting of ice (solid) into water (liquid) absorbs heat (endothermic) and the volume of ice is greater than that of water, meaning that the reaction results in a decrease in volume. 3. **Analyzing the Relationship**: - The assertion is true because increasing temperature favors the formation of more water from ice. - The reason is also true and correctly explains why the assertion holds: the forward reaction is endothermic, and increasing temperature will shift the equilibrium towards the product side (more water). 4. **Conclusion**: - Since both the assertion and reason are true, and the reason correctly explains the assertion, we can conclude that the answer is option A. ### Final Answer: **Option A**: Both assertion and reason are true, and the reason is the correct explanation of the assertion. ---
Promotional Banner

Topper's Solved these Questions

  • EQUILIBRIUM

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT (SECTION -C)|89 Videos
  • ENVIRONMENTAL CHEMISTRY

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT (SECTION-D) (Assertion - Reason Type Questions)|4 Videos
  • GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (Section-D) Assertion-Reason Type Question|15 Videos

Similar Questions

Explore conceptually related problems

Each question contains STATEMENT-1 (Assertion) and STATEMENT-2( Reason). Examine the statements carefully and mark the correct answer according to the instruction given below: STATEMENT-1: For the physical equilibrium H_(2)O (s)iff H_(2)O(l) on increasing temperature and increasing pressure more water will form. STATMENT-2: Since forward reaction is endothermic in nature and voume of water is greater than that of the volume of ice.

A gas is in equilibrium with water at a certain temperature and pressure what will happen if Pressure of the gas is increased ?

Assertion (A) : Equilibrium constant of a reaction increases if temperature is increased Reason (R) : The forward reaction becomes faster with increase of temperature.

With increase in temperature generally the value of the equilibrium constant of endothermic reversible reaction

For the physical equilibrium ice hArr water, the forward reaction is not favoured by

Increase of pressure favours the forward reaction in the following equilibrium

Le Chatelier's Principle If a system at equilibrium is subjected to a change of any one of the factors such as concentration, pressure or temperature, the system adjusts itself in such a way as to nullify the effect of that change. Change of pressure : If a system consists of gases, then the concentration of all the components can be alterd by changing the pressure. To increase the pressure on the system,the volume has to be decreased proportionally. The total number of mols per unit volume will now be more and the equilibrium will shift in the direction in which there is a decrease in number of moles i,e. towards the direction in which there can be decrease in pressure. Effect of pressure on melting point : There are two types of solids: (a) Solids whose volume decreases on melting e.g., ice,diamond carborundum magnesium nitride and quratz. Solids (higher volume) hArr Liquid (lower volume) The process of melting is facilitated at high pressure, thus, melting point is lowerd. (b) Solids whose volume increase on melting e.g.,Fe,Cu,Ag,Au,etc. Solid (lower volume) hArr Liquid (higher volume) In this case the process of melting become difficult at high pressure, thus melting point becomes high. (c) Solubility of substances : When solid substances are dissolved in water, either heat is evolved (exothermic) or heat is absorbed (endothermic). KCI+aqhArrKCI(aq)-heat In such cases, solubility increase with increase in temperature. Consider the case of KOH, when this is dissolved,heat is evolved. KOH+aqhArrKOH(aq)+heat In such cases, solubility decrease with increase in temperature. (d) Solubility of gases in liquids : When a gas dissolves in liquid,there is decrease in volume. Thus increase of pressure will favour the dissolution of gas in liquid. A gas 'X' when dissolved in water,heat is evolved. Then solubility of 'X' will increase:

Le Chatelier's Principle If a system at equilibrium is subjected to a change of any one of the factors such as concentration, pressure or temperature, the system adjusts itself in such a way as to nullify the effect of that change. Change of pressure : If a system consists of gases, then the concentration of all the components can be alterd by changing the pressure. To increase the pressure on the system,the volume has to be decreased proportionally. The total number of mols per unit volume will now be more and the equilibrium will shift in the direction in which there is a decrease in number of moles i,e. towards the direction in which there can be decrease in pressure. Effect of pressure on melting point : There are two types of solids: (a) Solids whose volume decreases on melting e.g., ice,diamond carborundum magnesium nitride and quratz. Solids (higher volume) hArr Liquid (lower volume) The process of melting is facilitated at high pressure, thus, melting point is lowerd. (b) Solids whose volume increase on melting e.g.,Fe,Cu,Ag,Au,etc. Solid (lower volume) hArr Liquid (higher volume) In this case the process of melting become difficult at high pressure, thus melting point becomes high. (c) Solubility of substances : When solid substances are dissolved in water, either heat is evolved (exothermic) or heat is absorbed (endothermic). KCI+aqhArrKCI(aq)-heat In such cases, solubility increase with increase in temperature. Consider the case of KOH, when this is dissolved,heat is evolved. KOH+aqhArrKOH(aq)+heat In such cases, solubility decrease with increase in temperature. (d) Solubility of gases in liquids : When a gas dissolves in liquid,there is decrease in volume. Thus increase of pressure will favour the dissolution of gas in liquid. Au(s) hArr Au(l) Above equsilibrium is favoured at :

At constant temperature if the pressure of an ideal gas is increased by 10% then its volume must decrease by

At constant temperature if the pressure of an ideal gas is increased by 10% then its volume must decrease by

AAKASH INSTITUTE ENGLISH-EQUILIBRIUM-ASSIGNMENT (SECTION -D)
  1. A : At higher temperature , Kw of water remains unaltered. R: kw is ...

    Text Solution

    |

  2. A : HCI, HNO3 and H2SO4 are equalty strong acids in water R : Water ...

    Text Solution

    |

  3. A : Increasing the concentration of H2 will increases magnitude of e...

    Text Solution

    |

  4. A : Increasing the temperature , increases [H^+] concentration in wat...

    Text Solution

    |

  5. A : Solution of CH3COONH4 is a buffer solution R: H^+ ion added will...

    Text Solution

    |

  6. A : K(sp) is a constant value for any salt at particular temperature ...

    Text Solution

    |

  7. A : H3O^+ ion from water is also taken in consideration while calcula...

    Text Solution

    |

  8. A : pH of 10^(-8) M HCI solution is approx 6.9 R : HCI is a strong a...

    Text Solution

    |

  9. A : For equilibrium ice hArr water on increasing temperature and pres...

    Text Solution

    |

  10. Assertion: At equilibrium the concentration of all reactants and produ...

    Text Solution

    |

  11. A : pH of 0.1 M HCI solution is less than 0.1 M HCN solution R : In ...

    Text Solution

    |

  12. A : A catalyst does not alter the equilibrium constant of a reaction ...

    Text Solution

    |

  13. A : pH of equimolar solution of NH4 CI and NH4OH does not change when ...

    Text Solution

    |

  14. A: The reaction 2NO(g) +O2(g) hArr 2NO2(g) is favoured in the forwar...

    Text Solution

    |

  15. A : pH of 1 M NaCI solution is 7 at 25^@C. R : pH of this solution d...

    Text Solution

    |

  16. A : CO2 is a Lewis acid. R : H2SO4 is Arrhenius acid as well as Bron...

    Text Solution

    |

  17. A : For H2CO3 K(a1) lt K(a2). R : H2CO3 is weaker acid than HCO3^-

    Text Solution

    |

  18. A : pH of mixture of 0.1 M HCN and 0.05 M NaOH is less than 7 . R : ...

    Text Solution

    |

  19. STATEMENT-1: Solubility of AgCN in NH(3) (aq.), is greater than in pur...

    Text Solution

    |

  20. A : Precipitates formation takes place when K(ip) gt K(sp) . R : K...

    Text Solution

    |