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
bonufazy [111]
3 years ago
10

The Handbook of Chemistry and Physics gives solubilities of the following compounds in grams per 100 mL of water at 20°C. Becaus

e these compounds are only slightly to moderately soluble, assume that the volume does not change on dissolution and calculate the solubility product for each at this temperature. (Note that 100 mL in this context is a nominal value and not subject to measurement uncertainty.)
1. BaS 6.97 g/100 mL ___________

2. CaSO3 5.9 ✕ 10−3 g/100 mL ____________

3. As2O3 1.80 g/100 mL ______________

4. Sr(IO3)2 0.152 g/100 mL ____________
Chemistry
1 answer:
g100num [7]3 years ago
7 0

Answer:

1. BaS          Ksp =  0.169

2. CaSO₃    Ksp = 2.4 x 10⁻⁷

3. As₂O₃     Ksp =  6.7 x 10⁻⁴

3.  Sr(IO₃)₂  Ksp = 1.7 x 10⁻⁷

Explanation:

The solubility constant product for a  solid AB is given  the expression for the equilibrium

AnBm (s) ⇄ A⁺(aq) + B⁻(aq)     Ksp = [A⁺(aq)]^n x [B⁻ (aq)]^m                    

where the subscripts (s)  and (aq) denote the solid  and  dissolved ions,  [A⁺(aq)]  and [B⁻ (aq)] are the concentrations of the dissolved  ions in moles/Liter.

1. BaS

We are given the solubility in grams per 100 mL, since we need the solubility in moles per liter we will first convert the given solubility from g/ 100 mL to g/ L , and then divide this value by the molar mass to get molar solubility. From here it will be  straight forward to calculate Ksp from the formula above

s = 6.97 g/ 100 mL = 6.97 g/0.1 L = 69.7  g/L

MW BaS = 169.39 g/mol

s BaS = (69.7 g/169.39 g/mol) / L = 0.41 mol/L = 0.41 M

Ksp = (0.41) x (0.41) = (0.41)² =  0.169

2. CaSO₃

s = 5.9 x 10⁻³ g / 100 mL = 5.9 x 10⁻³ g/ 0.1 L = 5.9 x 10⁻² g/L

MW CaSO₃ = 120.17 g/mol

s CaSO₃ = ( 5.9 x 10⁻² g / 5.9 x 10⁻² / 120.17 g/mol ) /L = 4.9 x 10⁻⁴ M

Ksp = (4.9 x 10⁻⁴) x ( 4.9 x 10⁻⁴) = (4.9 x 10⁻⁴)² = 2.4 x 10⁻⁷

3. As₂O₃

s = 1.80 g/ 100 mL = 1.80 g/ 0.100 L = 18.0 g /L

MW As₂O₃ = 197.84 g/mol

s = (18.0 g/ 197.84 g/mol) / L = 9.1 x 10⁻² mol/L = 9.1 x 10⁻² M

Ksp = (2 x 9.1 x 10⁻² )² x ( 3 x  9.1 x 10⁻² )³ = 6.7 x 10⁻⁴

Note we have to take into account that since the solubility of the compound As₂O₃ is 9.1 x 10⁻² mole/L we  will have molar solubility  concentrations of 2 x 9.1 x 10⁻² mol As³⁺ and 3  x 9.1 x 10⁻² . We did not need to do this in parts 1 and 2 since the ratio of ions were 1:1

4. Sr(IO₃)₂ 0.152 g/100 mL

s = 0.152 g / 100 mL = 0.152 g/0.1L = 1.52 g/L

MW Sr(IO₃)₂  = 437.43 g/mol

s = (1.52 g/437.43 g/mol)/L = 3.5 x 10⁻³ M

Ksp = (3.5 x 10⁻³ ) x ( 2 x 3.5 x 10⁻³ )² = 1.7 x 10⁻⁷

You might be interested in
Certain drugs, such as ssris, block the reuptake of a neurotransmitter into the presynaptic cell. what effect does this have ons
Sloan [31]

Selective serotonin reuptake inhibitors (SSRIs) are drugs that are antidepressants. These blocks the reuptake of a neurotransmitter leading to increases in their activity in the synaptic cells.

<h3>What are neurotransmitters?</h3>

Neurotransmitters are defined as the signaling molecules that are secreted by the nerve cells and act as signal transporter between the neurons and the other cells of the body.

The SSRIs class of drugs affects this neurotransmitter and blocks the pathway to the presynaptic cell. This, in turn, affects synaptic communication by increasing the amount of those SSRIs in the body and acting as a stimulant to treat various diseases.

Therefore, the SSRIs block the neurotransmitter and result in their effects.

Learn more about neurotransmitters here:

brainly.com/question/28138251

#SPJ4

6 0
1 year ago
How many valence electrons are in atom of sulfur?
Nookie1986 [14]
The answer is six because it is in group six A on the periodic table.
8 0
3 years ago
Elements that have the following qualities: Lustrous, Solid at Room Temperatures, They react and form Basic Compounds, Great con
Tatiana [17]

Answer:

They are classified as METALS.

Explanation:

Elements are simple substances that cannot be chemically broken down into smaller substances. Based on different characteristics, they are classified into 3 namely:

- metals

- non metals and

- metalloid( mainly act as semi- conductor).

METALS are the type of elements that loses electrons to form positive ion, that is, they are electropositive elements. They are distinguished by the following characteristics:

- LUSTROUS: they have the ability to reflect light from its surface.

- At room temperature: Metals are solid are room temperature with the exception of Mercury which is liquid at room temperature.

- They react and form Basic Compounds

- Great conductor: most metals are great conductors of heat and electricity because they possess free electrons.

- Melting Point: they have high melting points.

8 0
3 years ago
What is the volume of 70.0 g of ether if the density of ether is 0.70 g/mL?
frosja888 [35]
M=70.0 g
p=0.70 g/mL

v=m/p

v=70.0/0.70=100.00 mL
8 0
3 years ago
What Most Often Causes The Availability Of Water To Change?
Margaret [11]

Answer:the answer is C

Explanation:

8 0
2 years ago
Other questions:
  • How are continental drift and plate tectonics related
    9·1 answer
  • Why can a hydrogen atom form a covalent bond without fulfilling the octet rule?
    6·2 answers
  • The molar mass of carbon dioxide (CO2) is 44.01 g/mol. The molar mass of water (H2O) is 18.01 g/mol. A reaction uses 528 g of CO
    12·1 answer
  • _____ are two or more elements that have been chemically combined. mixtures compounds atoms colloids
    7·2 answers
  • Identify the correct equation for the equilibrium constant Kc for the reaction given. C u ( s ) + 2 A g N O 3 ( a q ) − ⇀ ↽ − C
    14·1 answer
  • Dalam ruang 1 liter, gas metana (ch4) direaksikan dengan 6 mol uap air sesuai reaksi:ch4(
    13·1 answer
  • What is the name of this compound
    5·1 answer
  • How many moles of helium are needed to fill a balloon to a volume of 5.3 L at 22 ℃ and 632 mmHg?
    13·1 answer
  • Calculate the atoms of hydrogen in 52.0 g of H2O.
    12·1 answer
  • Which element do plants need a lot of in order to go?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!