Home
Class 11
CHEMISTRY
2g of NaOH per 250 mL of solution is add...

`2g` of `NaOH` per `250 mL` of solution is added to a buffer solution of buffer capacity `0.2`. Then the change in pH is

A

`0.5`

B

`1`

C

`1.5`

D

`2.0`

Text Solution

Verified by Experts

The correct Answer is:
B

`n = 0.05` eq
per liter solution `0.05 xx 4 = 0.2` eq, `phi =(0.2)/(0.2) = 1`
Promotional Banner

Topper's Solved these Questions

  • IONIC EQUILIBRIUM

    NARAYNA|Exercise Level-III|52 Videos
  • IONIC EQUILIBRIUM

    NARAYNA|Exercise Level-IV|22 Videos
  • IONIC EQUILIBRIUM

    NARAYNA|Exercise Level-I|49 Videos
  • HYDROGEN & ITS COMPOUNDS

    NARAYNA|Exercise LEVEL-4|21 Videos
  • PERIODIC TABLE

    NARAYNA|Exercise All Questions|568 Videos

Similar Questions

Explore conceptually related problems

On diluting a buffer solution, its pH

Buffer Solution || Acidic Buffer

0.002 moles of an acid is added to a litre of buffer solution, decreases the pH of the buffer by 0.02 . Then the buffer capacity is

A solution capable of maintaining its pH relatively constatn, when either excess acid or excess base is added, is said to be buffered While it is not usually considered a buffered solution, a concentrated solution (10^(-2) M and higher) of a strong acid or stong base is buffered against large changes in pH when acids or bases are added. Buffered solutions are usually those containing a wealk acid and a salt of that weak acid or a weak base and the salt of that weak base. For example a solution containing HAc and NaAC resists large change in pH when acid or alkali is added. For a buffer solution Buiffer capacity is defined as the number of moles of a strong acid or a strong base that causes 1 of the buffer to undergo a 1 unit change in pH. Buffer capacity is maximum when the molar ratio of the two components is unity and the buffer solution is considerred good. Which solution is not a buffer solution ?

A solution capable of maintaining its pH relatively constatn, when either excess acid or excess base is added, is said to be buffered While it is not usually considered a buffered solution, a concentrated solution (10^(-2) M and higher) of a strong acid or stong base is buffered against large changes in pH when acids or bases are added. Buffered solutions are usually those containing a wealk acid and a salt of that weak acid or a weak base and the salt of that weak base. For example a solution containing HAc and NaAC resists large change in pH when acid or alkali is added. For a buffer solution Buiffer capacity is defined as the number of moles of a strong acid or a strong base that causes 1 of the buffer to undergo a 1 unit change in pH. Buffer capacity is maximum when the molar ratio of the two components is unity and the buffer solution is considerred good. The least change in pH on adding 0.01 mol of HCI to 1 litre of conc. HCI solutiions will be in case of:

A solution capable of maintaining its pH relatively constatn, when either excess acid or excess base is added, is said to be buffered While it is not usually considered a buffered solution, a concentrated solution (10^(-2) M and higher) of a strong acid or stong base is buffered against large changes in pH when acids or bases are added. Buffered solutions are usually those containing a wealk acid and a salt of that weak acid or a weak base and the salt of that weak base. For example a solution containing HAc and NaAC resists large change in pH when acid or alkali is added. For a buffer solution Buiffer capacity is defined as the number of moles of a strong acid or a strong base that causes 1 of the buffer to undergo a 1 unit change in pH. Buffer capacity is maximum when the molar ratio of the two components is unity and the buffer solution is considerred good. How many moles of strong acid should be added to best buffer of Q4 to decrease pH byu one unit:

A solution capable of maintaining its pH relatively constatn, when either excess acid or excess base is added, is said to be buffered While it is not usually considered a buffered solution, a concentrated solution (10^(-2) M and higher) of a strong acid or stong base is buffered against large changes in pH when acids or bases are added. Buffered solutions are usually those containing a wealk acid and a salt of that weak acid or a weak base and the salt of that weak base. For example a solution containing HAc and NaAC resists large change in pH when acid or alkali is added. For a buffer solution Buiffer capacity is defined as the number of moles of a strong acid or a strong base that causes 1 of the buffer to undergo a 1 unit change in pH. Buffer capacity is maximum when the molar ratio of the two components is unity and the buffer solution is considerred good. Which species has the lowest concentration in a solution prepared by mixing 0.1 mole each of HCN and NaCN in 1 L solution? K_(a)(HCN)=10^(-10)

When 0.1 mole of an acid is added to 2 L of a buffer solution, the P^(H) of the buffer decreases by 0.5 . The buffer capacity of the solution is

NARAYNA-IONIC EQUILIBRIUM-Level-II
  1. 100 mL of 0.3 N-Acetic acid solution is mixed with same volume of 0.2 ...

    Text Solution

    |

  2. When the following is added to 20 ml of 0.1 M CH(3)COOH + 20 ml 0.1 M ...

    Text Solution

    |

  3. An acidic buffer contains equal concentrations of acid and salt. The d...

    Text Solution

    |

  4. 50 mL of 0.1 M solution of sodium acetate and 50 mL of 0.01 M acetic ...

    Text Solution

    |

  5. The K(b) of weak base is 10^(-4). The ["salt"] to ["base"] ratio to be...

    Text Solution

    |

  6. The ionisation constant of acetic acid is 2 xx 10^(-5) The pH of buff...

    Text Solution

    |

  7. When 0.1 mole of an acid is added to 2 L of a buffer solution, the P...

    Text Solution

    |

  8. 5 moles of acid is required to change the pH of 1 litre of buffer by 2...

    Text Solution

    |

  9. A certain buffer solution contains equal concentrations of B^(+) & BOH...

    Text Solution

    |

  10. P^(H) of CH(3)COOH and CH(3)COONa buffer is 4.8 in Which of the follow...

    Text Solution

    |

  11. NH(4)OH is weak base but it becomes still weaker in the aqueous soluti...

    Text Solution

    |

  12. Soluility product of Ba(OH)(2) and Al(OH)(3) are 1.8 xx 10^(10) and 2....

    Text Solution

    |

  13. The solubility of CaF(2) is 2 xx 10^(-4) "mole"//"litre". Its solubili...

    Text Solution

    |

  14. The solubility of AgCl in 0.1 M NaCl is (K(sp) of AgCl = 1.2 xx 10^(-1...

    Text Solution

    |

  15. If the solubility of AgCl in 0.1 M NaCl is (K(sp) of AgCl = 1.2 xx 10...

    Text Solution

    |

  16. What is minimum concentration of SO(4)^(2-) required to precipitate Ba...

    Text Solution

    |

  17. The P^(H) of saturated aqueous solution of Ba(OH)(2) is 10. If the K(s...

    Text Solution

    |

  18. Find the change in pH when 0.01 mole CH(3)COONa is added to one litre ...

    Text Solution

    |

  19. 2g of NaOH per 250 mL of solution is added to a buffer solution of buf...

    Text Solution

    |

  20. The precipitate of CaF(2) (K(sp)=1.7xx10^(-10)) is obtained when equal...

    Text Solution

    |