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
Ad libitum [116K]
3 years ago
15

A solution containing a mixture of 0.0333 M0.0333 M potassium chromate ( K2CrO4K2CrO4 ) and 0.0532 M0.0532 M sodium oxalate ( Na

2C2O4Na2C2O4 ) was titrated with a solution of barium chloride ( BaCl2BaCl2 ) for the purpose of separating CrO2−4CrO42− and C2O2−4C2O42− by precipitation with the Ba2+Ba2+ cation. The solubility product constants ( KspKsp ) for BaCrO4BaCrO4 and BaC2O4BaC2O4 are 2.10×10−102.10×10−10 and 1.30×10−61.30×10−6 , respectively.
A) Which barium salt will precipitate first? O BaC204 O BaCrO4
B) What concentration of Ba2+ must be present for BaCrO4 to begin precipitating? Number [Ba2+]=
C) What concentration of Ba is required to reduce oxalate to 10% of its original concentration? Number 2+
D) What is the ratio of oxalate to chromate (IC204CrO4) when the Ba2 concentration is 0.0050 M? Number C,O Cro,
Chemistry
1 answer:
jasenka [17]3 years ago
3 0

Answer:

Explanation:

K₂CrO₄ + ( COONa )₂ + 2BaCl₂ = Ba CrO₄ + ( COO ) ₂ Ba + 2 KCl + 2 NaCl

.033 M             .053 M    

Ksp of   Ba CrO₄  is      2.10×10⁻¹⁰

Ksp of ( COO ) ₂ Ba  is   1.30×10⁻⁶

A ) Ksp of   Ba CrO₄ is less so it will precipitate out first .

B) Ksp = 2.10×10⁻¹⁰

Ba CrO₄ = Ba⁺²  +  CrO₄⁻²

                   C            .033

C x   .033  = 2.10×10⁻¹⁰

C =  63.63 x 10⁻¹⁰ M

Ba⁺² must be present in concentration = 63.63 x 10⁻¹⁰ M

C)

90% of precipitation of barium oxalate

concentration of oxalate to precipitate out = .9 x .0532 = .04788

( COO ) ₂ Ba  =  (COO)₂⁻²     +       Ba⁺²

                           .04788 M            C  

C x  .04788  =  1.30×10⁻⁶

C = 27.15  x 10⁻⁶ M .

You might be interested in
Is this a correct response? Please help me!
tia_tia [17]
Yes bsjaibsvdnakiebdnsoehdbdnsieveb
4 0
3 years ago
Read 2 more answers
Which layer of rock contains more humus
sleet_krkn [62]
It is the horizon layer
~Hope this helps~
4 0
3 years ago
How much does a 130 kg object weigh on Earth?
Strike441 [17]

Answer:

1274

Explanation:

4 0
3 years ago
Read 2 more answers
HELP PLEASE!!!!!
Mashutka [201]

Answer:

National fire protection Association

Explanation:

the nfpa is a global self funded nonprofit orgnazation establised in 1896 devoted to eliminating death injury protery loss and ecomomic loss due to fire and electrical hazards

4 0
3 years ago
15 POINTS!!!
lawyer [7]

<em>Answer:</em>

  • At 60 centigrade, the kinetic energy of the substance will be greatest.

<em>Explanation:</em>

As we know, the kinetic energy of substance is directly proportional to Temperature.

The total Kinetic energy can be calculated as follow

                                                K.E = 3/2 n.R.T

From the equations, it is cleared that Temperature is directly proportional to temperature.

7 0
3 years ago
Read 2 more answers
Other questions:
  • What role did gravity play in the formation of our solar system?
    11·2 answers
  • Calculate the mass percentage of oxygen in dry air
    13·2 answers
  • What does the zeroth law of thermodynamics allow us to define?
    7·2 answers
  • Water (2350 g ) is heated until it just begins to boil. If the water absorbs 5.83×105 J of heat in the process, what was the ini
    8·1 answer
  • Your classmate Manuel missed class yesterday. To help him catch up, explain in at least one complete sentence the effect of free
    12·1 answer
  • How many neutrons are in the element phosphorus?
    12·1 answer
  • What is produced each time a c-c bond is re-arranged or broken?
    13·1 answer
  • Differences between expansion of solid and liquid​
    8·1 answer
  • What is defined as the basic unit in the metric system that describes a quality?
    12·1 answer
  • recall that temperature is a measure of the average kinetic energy of a substance. both ethanol and water had the same amount of
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!