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
Describe the three states of matter in terms of shape and volume
abruzzese [7]
Shape
A gas is shapeless all other things being equal. It will, if put in a container, occupy every part of the container.

A liquid could also be thought of shapeless. If put in a container, it need not occupy the entire container. It will occupy as much as its calculated volume will permit it to occupy.

A solid will only occupy its original shape.

Volume
A gas will occupy whatever container it is put in within limits. You cannot put a 72 mols of gas in a mm^3 container without some amazing ability to apply a lot of pressure.

A liquid will occupy a volume determined by its density and mass. In general liquids cannot be compressed. 

Whatever volume a solid has to start with, it will retain that volume all other things being equal.

This is actually very hard to describe. 
7 0
3 years ago
calculate the (m/v) of nacl of a solution made by diluting 25.0 ml of a 7.50 (m/v)% NaCl solution to a total volume of 75.00 ml
postnew [5]

Answer:

c

Explanation:

8 0
2 years ago
Read 2 more answers
Light travels three-fourths as fast through water as it does through a vacuum.
Talja [164]
1.33 is the answer thank me later
4 0
3 years ago
Read 2 more answers
Please help this assignment is due today. First person to answer gets 17 points. Please help ASAP.
DochEvi [55]

Answer:

hi umm can you please be my friend please thankyou so much and the answer for this is can i please get brainlist and can you please like this and rate it so now the answer is what type of chemical bond commonly forms between adjacent water molecules? of ionic, covalent, and hydrogen bonds, ionic bonds are the most common type of chemical bonds found in the body.please may i grt brain-list

5 0
3 years ago
When naming a binary compound, what ending do you use to represent anions?
spin [16.1K]
I believe You replace the ending of the elements name with -ide. example: magnesium flourine should should be magnesium flouride. 
6 0
3 years ago
Other questions:
  • Calculate the work (kJ) done during a reaction in which the internal volume expands from 28 L to 51 L against an outside pressur
    5·1 answer
  • Does anyone know What does pH= ?
    15·2 answers
  • How to write half reaction for H2O2(aq) -> O2(g)
    11·1 answer
  • Please help i really don't wanna fail :(
    6·2 answers
  • Use the crossover method to find the chemical formula of a calcium oxide
    9·1 answer
  • 4. How Does Extreme conditions<br> accelerate erosion ?
    9·1 answer
  • Metal or Non-metal?
    11·1 answer
  • What equation explains the relation between amperes, watts and volts?
    5·2 answers
  • Many human activities are increasing the level of the greenhouse gases in the atmosphere.
    12·1 answer
  • What are three disadvantages of visible light
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!