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 50

    NTA MOCK TESTS|Exercise CHEMISTRY|45 Videos

  • NTA NEET SET 52

    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 51-CHEMISTRY
  1. The half life for radioactive decay of .^(14)C is 5730 years. An archa...

    Text Solution

    |

  2. The type of isomerism observed in alkanes is

    Text Solution

    |

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

    Text Solution

    |

  4. Sodium chloride is an ionic compound whereas hydrogen chloride is Main...

    Text Solution

    |

  5. Which of the sulphide is yellow-

    Text Solution

    |

  6. The vapour pressure of pure benzene and toluene are 160 and 60 mm Hg r...

    Text Solution

    |

  7. Clay is an example of

    Text Solution

    |

  8. Identify the correct sequence of increasing number of pi-bonds in strc...

    Text Solution

    |

  9. Zirconium phosphate [Zr3(PO4)4] dissociates into three zirconium catio...

    Text Solution

    |

  10. Which of the following is an example of nucleophilic addition ?

    Text Solution

    |

  11. Among the following, the essential amino acid is :

    Text Solution

    |

  12. For the reaction 2NO(2)(g) hArr 2NO(g)+O(2)(g) K(c)=1.8xx10^(-6) at ...

    Text Solution

    |

  13. A compound 'A' formula of C(3)H(6)CI(2) on reaction with alkali can gi...

    Text Solution

    |

  14. Which functional group participates in the disulphide bond formation i...

    Text Solution

    |

  15. If lamdao and lamda be the threshold wavelength and wavelength of inci...

    Text Solution

    |

  16. Which of the following species is not expected to exist ?

    Text Solution

    |

  17. In conversion of limestone to lime , CaCO3(s) rarrCaO(s)+CO2(g) the va...

    Text Solution

    |

  18. A gas is heated in such a way that its pressure and volume both become...

    Text Solution

    |

  19. The complex ion which has the highest magnetic moment among the follow...

    Text Solution

    |

  20. Which of the following species is not paramagnetic ?

    Text Solution

    |