1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
madreJ [45]
3 years ago
12

If kb for nx3 is 4.0×10−6, what is the poh of a 0.175 m aqueous solution of nx3?

Chemistry
1 answer:
Elena-2011 [213]3 years ago
7 0
<h3><u>Answer;</u></h3>

pOH = 3.08

<h3><u>Explanation;</u></h3>

NX3 + H2O <----> NHX3+ + OH-  

Kb = 4.0 x 10^-6

Kb = c(NH₄⁺) · c(OH⁻) ÷ c(NH₃).

c(NH₄⁺) = c(OH⁻) = x.

x² = Kb · c(NH₃)

x² = 4.0 × 10⁻⁶ × 0.175 = 7.0 × 10⁻⁷.

x = c(OH⁻) = √(7.0 × 10⁻⁷)

    = 8.367 × 10⁻⁴

pOH = -log(c(OH⁻))

        =- log ( 8.367 × 10⁻⁴)

        <u>= 3.08</u>

You might be interested in
Chemically combined substances, such as CO2, NH3, and H20 are called.....
Alex787 [66]
It is d. compounds because they have more than one element.
8 0
3 years ago
Read 2 more answers
Express in scientific notation. Make sure your answer has the same number of significant figures as the starting value.
frez [133]
The correct response is the second option.
6.1103x10^4. As this was the only answer that had the same number of significant figures as the starting value.
6 0
3 years ago
To 225 mL of a 0. 80 M solution of Kl, a student adds enough water to make 1. 0 L of a more dilute Kl solution. What is the mola
Lady_Fox [76]

Answer: 0.18 M

Explanation:

Initial molarity, M1 = 0.8 M

Initial olume, V1 = 225 ml

Final volume, V2 = 1000 ml

Final Molarity, M2 = M1V1/V2

= 0.8 x 225/1000

= 0.18 M

7 0
2 years ago
Use the experimental results to match each of the unknown compounds
Elan Coil [88]

Answer:

OMG so big question!!!!!!!!!!!!

6 0
2 years ago
Why couple should use a method of birth control
Tresset [83]

Answer:

because it will control the birth of a child which can happen alot being overpopulated in the country or world. It also can mange their life and create a small and happy and healthy family.Also the child can get more love and support from their parents if they have less children and it wont be a taruma for the couple as well.  because growing a child can be expensive time costly and really hard.

Explanation:

plz mark me as a brainlest a and thanks my answer

3 0
2 years ago
Other questions:
  • Which molecule has polar bonding and is nonpolar? A. H2O B. BF3 C. NH3 D. NCl3 E. CH2Cl2
    12·1 answer
  • What are the measurements for standard temperature and pressure (stp)? kp?
    14·1 answer
  • Look up the word periodic in the dictionary propose a reason for the naming of the periodic table
    6·1 answer
  • When bonded with four hydrogen atoms, carbon has which shape?
    10·1 answer
  • I need this asap Molar mass of C6H12O6
    12·1 answer
  • What is a supersaturated solution?
    11·1 answer
  • Which order shows the size of the inner planets from smallest to largest
    15·2 answers
  • Define natural resources
    9·1 answer
  • QUESTION 10
    6·2 answers
  • In which form are water molecules most closely bonded to each other?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!