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
pychu [463]
3 years ago
8

A 5.60 g sample of a weak acid with

Chemistry
1 answer:
murzikaleks [220]3 years ago
4 0

Answer:

pKa = - log Ka = - log (1.3 * 10^-4) = 3.886 5.20 mL of 6.20 M NaOH = 0.00520 L * 6.20 mole…

Explanation:

You might be interested in
The bonds S-S, O-H and Ca-Cl are, respectively, a) nonpolar covalent, polar covalent, ionic polar covalent, b)nonpolar covalent,
Brums [2.3K]

Answer:

nonpolar covalent, polar covalent, ionic

Explanation:

From the question ,

S - S Bond -

Both the atom are same , hence , making a non polar bond , because of no difference between the electronegativity of the atom ,

Hence , the S-S Bond is non polar covalent bond .

O-H bond -

The Oxygen atom is more electronegative than the hydrogen atom , so the bond is polar in nature .

And as the bond is formed by sharing ,

Therefore ,

O-H bond is polar covalent bond .

Ca-Cl bond -

Calcium is a metal , whereas , Chlorine is a non - metal , the bond is ionic in nature ,

Hence , Ca-Cl bond is  ionic  in nature .

7 0
3 years ago
solution of a weak acid HA has initial concentration c and acid ionization constant Ka. To what concentration should the acid be
soldier1979 [14.2K]

Answer:

The concentration c is equal to Ka

Explanation:

The acid will ionize as observed in the following reaction:

HA = H+ + A-

H+ is the proton of the acid and A- is the conjugate base . The equation to calculate the Ka is as follows:

Ka = ([H+]*[A -])/[HA]

Initially we have to:

[H+] = 0

[A-] = 0

[HA] = c

During the change we have:

[H+] = +x

[A-] = +x

[HA] = -x

During balance we have:

[H+] = 0 + x

[A-] = 0 + x

[HA] = c - x

Substituting the Ka equation we have:

Ka = ([H+]*[A-])/[HA]

Ka = (x * x)/(c-x)

x^2 + Kax - (c * Ka) = 0

We must find c, having as [H+] = 1/2c. Replacing we have:

(1/2c)^2 + (Ka * 1/2 * c) - (c * Ka) = 0

(c^2)/2 + Ka(c / 2 - c) = 0

(c^2)/2 + (-Ka * c/2) = 0

c^2 -(c*Ka) = 0

c-Ka = 0

Ka = c

8 0
3 years ago
Volaic cells produce a positive overall charge what does this indicate
juin [17]
It means the process carried by the cell is spontaneous. 
7 0
3 years ago
H E L P M E<br><br> complete the sentence
Grace [21]

Answer:

where is the question

Explanation:

give the question and then I'll make answer your question

8 0
3 years ago
Read 2 more answers
19) Which if the following is a heterogeneous mixture?<br> a. Air<br> b. Steel<br> d. Soil
NikAS [45]
A. air is a heterogeneous mixtu6
6 0
4 years ago
Read 2 more answers
Other questions:
  • Hydrogen peroxide decomposes to give water and oxygen gas according to the equation below. If 3.0 moles of hydrogen peroxide dec
    11·1 answer
  • Copper is composed of two naturally occurring isotopes: Cu−63 (69.170%) and Cu−65. The ratio of the masses of the two isotopes i
    14·1 answer
  • Calculate the vapor pressure, in mm hg, at 25c of water above a solution made by dissolving 100. g sucrose, (fw = 342.3) in 250.
    9·2 answers
  • The symbols given to elements are always directly related to their chemical names
    9·1 answer
  • Describe the three types of convergent plate boundaries?
    15·1 answer
  • Provide three different types of examples of how minerals form on earth
    5·1 answer
  • QUESTION 57
    10·2 answers
  • Pls answer
    11·2 answers
  • An unknown substance has mass of 20 grams and volume of 2 cm3. What is the density of the substance
    8·1 answer
  • What is the molarity of a solution that contains 17g of NH₃ in 0.50L of solution?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!