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
Complete la siguiente comparación de similitud:
galben [10]

Answer:

metaloides

Explanation:

4 0
2 years ago
Which is most likely why many scientists reject the cold fusion theory?
mina [271]
The original results have not been replicated consistently and reliably.

8 0
3 years ago
Read 2 more answers
Is C2S6 ionic or covalent
Stels [109]

Answer:

covalent

Explanation:

C2S6 is a compound made of 2 nonmetals which makes it covalent

Hope this helps! Plz mark brainliest

8 0
3 years ago
Why is Jon Dalton’s discovery important to science? Help please
Veronika [31]

Answer:

Dalton expressed his assumption in A Modern Model of Chemical Theory that atoms of various elements should be uniformly differentiated, based on their differing atomic weights. In doing so, he became the first scientist to explain atom behavior as regards weight measurement.

Explanation:

8 0
2 years ago
What are the steps to evaporation but without heat just evaporation steps to follow
densk [106]
First, the sun shines liquid (ocean) Next, the water evaporates 
8 0
3 years ago
Read 2 more answers
Other questions:
  • Classify the compound below as an alkane, alkene, alkyne, alcohol, aldehyde, amine, and so forth
    13·1 answer
  • What is the equation adheres to the law of conservation of matter
    7·1 answer
  • Electrons in the outermost shell of an atom that are available to bond with the electrons of other atoms are
    15·1 answer
  • A solution contains two isomers, n-propyl alcohol and isopropyl alcohol, at 25°C. The total vapor pressure is 38.6 torr. What ar
    9·1 answer
  • If a glass bottle breaks into thousands of tiny pieces what type of change occurs
    12·1 answer
  • 2. How old are the oldest fossils? Oldest rocks?During what period were these found?<br> IT
    8·1 answer
  • Condensation point and freezing point of argon in KELVIN.
    13·1 answer
  • The equilibrium constant, Kc, is calculated using molar concentrations. For gaseous reactions another form of the equilibrium co
    9·1 answer
  • 24. A laboratory chemist wants to produce 25.0 g NO2 by the following reactions. If the
    12·1 answer
  • Sodium stearate (c17h35coona) is commonly used in soaps and detergents. a. what effect does a common ion have on solubility?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!