Which of the following concentrations of `NH_(4)^(+)` will be sufficient to prevent the precipitation of `Mg(OH)_(2)` form a solution which is 0.01 M

Question

Which of the following concentrations of `NH_(4)^(+)` will be sufficient to prevent the precipitation of `Mg(OH)_(2)` form a solution which is 0.01 M

Which of the following concentrations of `NH_(4)^(+)` will be sufficient to prevent the precipitation of `Mg(OH)_(2)` form a solution which is 0.01 M `MgCl_2` and `0.1 M NH_3(aq.)` Given that :`K_(SP)` of `Mg(OH)_(2)=2.5xx10^(-11)` and `K_b` for `NH_3(aq)=2xx10^(-5)`
A. 0.01 M
B. 0.02 M
C. 0.001 M
D. 0.04 M

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

Related Questions

In what volume ratio should you mix `1.00 M` solution `NH_(4)Cl` and 1.00 M `NH_(3)` to produce a buffer solution of pH 9.80 ? `[pK_(b)(NH_(3))=4.74]`

2 Answers 4 Views

`Ag^(+)+hArr|Ag(NH_(3))_(2)|^(+), k_(1) = 6.8 xx 10^(-3)` `[Ag(NH_(3))]^(+) + NH_(3)hArr |Ag(NH_(3))_(2)|, k_(2) = 1.6xx10^(-3)` Then the formation co

2 Answers 4 Views

Light of wavelength `330nm` falling on a piece of metal ejects electrons with sufficient energy with required voltage `V_0` to prevent them reaching a

2 Answers 5 Views

Using IUPAC norms write the systematic names of the following : (a) `[Co(NH_(3))_(6)]CI_(3)` (b) `[Co(NH_(3))_(4)CI(NO_(2))]CI` (c) `[Ni(NH_(3))_(6)]C

2 Answers 5 Views

`Ag^(+) + NH_(3) ltimplies [Ag(NH_(3))]^(+), k_(1)=6.8 xx 10^(-5)` `[Ag(NH_(3))]^(+) + NH_(3) ltimplies [Ag(NH_(3))_(2)]^(+)`, `k_(2) = 1.6xx10^(-3)`

2 Answers 8 Views

What is the minimum pH required to prevent the precipitation of ZnS in a solution that is `0.01 M ZnCl_2` and saturated with `0.10 M H_2S`? Given `K_(

2 Answers 4 Views

Assertion: When brakes are applied on a wet road, a car is likely to skid. Reason: Brakes prevent rotation of the wheels, and there is not sufficient

2 Answers 4 Views

What concentration of `OH^(-)` ions will reduce `NH_(4)^(+)` ion to `2xx10^(-5)M` in `0.4M` solution of `NH_(4)OH ? K(b)(NH_(4)OH)=1.8xx10^(-5)`

2 Answers 4 Views

Percent yield of `NH_(3)` in the following reaction is 80% `NH_(2)CONH_(2) + 2NaOH overset(Delta)rarrNa_(2)CO_(3)+2NH_(3)` `6g NH_(2)CONH_(2)` reacts

2 Answers 7 Views

Complete the following set of reactions: (i) Urea + `NH_(2)-NH_(2)underset("Amyl alcohol")overset(383 K)to()+NH_(3)` (ii) Urea + `HNO_(3)to(B)overset(

2 Answers 5 Views

Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - D
`K_(SP)=[Mg^(+2)][OH^(-)]^2`
`[OH^(-)]=sqrt((2.5xx10^(-11))/0.01)=5xx10^(-5)`
`K_b=([NH_4^+][OH^(-)])/([NH_3])`
So, `[NH_4^+]=0.04 M`

4 views Answered 2023-02-05 15:29