Home
Class 12
CHEMISTRY
What is the minimum pH required to preve...

What is the minimum pH required to prevent the precipitation of ZnS in a solution which is 0.01 M `ZnCl_2` and saturated with 0.1 M `H_2S` ?
`K_(sp)" of " (ZnS)=10^(-21),K_(a_1)xxK_(a_2)(H_2S)=10^(-20)`

A

0

B

1

C

2

D

4

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • NTA NEET SET 71

    NTA MOCK TESTS|Exercise CHEMISTRY|45 Videos

  • NTA NEET SET 73

    NTA MOCK TESTS|Exercise CHEMISTRY|45 Videos

Similar Questions

Explore conceptually related problems

What is maximum pH required to prevent the precipitation of ZnS in a solution that is 0.01 M ZnCl_(2) and saturated with 0.10M H_(2)S ? [Given : K_(sp)(ZnS)=10^(-21), K_(a_(1))xxK_(a_(2)) (of H_(2)S )= 10^(-20) ]

An acidified of 0.05 M Zn^(2+) is saturated with 0.1 M H_2S . What is the minimum molar concentration (M) or H^+ required to prevent the precipitation of ZnS ? Use K_(sp)(ZnS) = 1.25 xx10^(-22) and overall dissociation constant of H_2S, K_("NET") =K_1K_2=1xx10^(-21) .

The K_(sp) of FeS = 4 xx 10^(-19) at 298 K. The minimum concentration of H^(+) ions required to prevent the precipitation of FeS from a 0.01 M solution Fe^(2+) salt by passing H_(2)S(0.1M) (Given H_(2)S k_(a_1) xx k_(b_1) = 10^(-21) )

Calculate the solubility of CoS in 0.1M H_(2)S and 0.15M H_(3)O^(oplus) (K_(sp) of CoS = 3 xx 10^(-26)) . (K_(1) xx K_(2) (H_(2)S) = 10^(-21))

NTA MOCK TESTS-NTA NEET SET 72-CHEMISTRY
  1. In curing cement plasters, water is sprinkled from time to time. This ...

    Text Solution

    |

  2. The function of "Sodium pump" is a biological process operating in eac...

    Text Solution

    |

  3. The main product of the following reaction is C6H5CH2CH(OH)CH(CH3)2 ov...

    Text Solution

    |

  4. Which of the following statements is incorrect for a homologous series...

    Text Solution

    |

  5. The amount of silver deposited by passing 241. 25 C of current through...

    Text Solution

    |

  6. Reaction 2Br((aq.))^(-)+Cl(2(aq.))rarr2Cl((aq.))^(-)+Br(2(aq.)), is u...

    Text Solution

    |

  7. The enthalpies of the elements in their standard states are arbitraril...

    Text Solution

    |

  8. The percentage of lanthanides and iron, respectively , in which metal ...

    Text Solution

    |

  9. Which of the following is not an explosive?

    Text Solution

    |

  10. ClO2 is an/a

    Text Solution

    |

  11. If n = 6, the correct sequence for filling of electrons will be.

    Text Solution

    |

  12. Lassaigne's test is used in the qualitative analysis to detect

    Text Solution

    |

  13. The ease of dehydrohalogenation of alkyl halide with alcoholic KOH is-

    Text Solution

    |

  14. What is the minimum pH required to prevent the precipitation of ZnS in...

    Text Solution

    |

  15. Which of the following statements is / are true ? (i) PH5 and BiCl5 ...

    Text Solution

    |

  16. Which of the following is a tetrabasic acid?

    Text Solution

    |

  17. For an ideal solution of two components A and B, which of the followin...

    Text Solution

    |

  18. Hyderocarbonunderset(Ni)underset(|)overset(H2)(.rarr)CH3-CH2-CH3

    Text Solution

    |

  19. The arrangement ofCI^(-) ions in CsCI structure is

    Text Solution

    |

  20. The key step in cannizzaro's reaction is the intermolecular shift of

    Text Solution

    |