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
Likurg_2 [28]
3 years ago
13

The theoretical yield of Cl2 from certain starting amounts of MnO2 and HCl was calculated as 60.25 g and 65.02 g, respectively.

If the percentage yield of Cl2 is 72%, what is its actual yield? (1 point) a 40.56 g b 42.17 g c 43.38 g d 46.81 g
Chemistry
1 answer:
user100 [1]3 years ago
5 0

Answer:

c    43.38 g

Explanation:

The reaction  between MnO2 and HCl can be represented by the following balanced equation:

MnO2 + HCl ---> Cl2 + MnCl2 + H2O

From the balanced equation, the theoretically required molar ratio of MnO2 to HCl is 1:1, therefore the yields would have been expected to be equal.  

For the fact that HCl  gives a higher yield (65.02g) than MnO2 (60.25g) according to the problem statement, HCl should be in excess,  while the limiting reagent should be MnO2 .  

Thus, the theoretical yield of Cl2 will be  60.25 g.

By definition, the percentage yield is given by

% Yield = (Actual Yield) / (Theoretical Yield),  

This can be simplified to

Actual Yield = % Yield * Theoretical Yield

Plugging in the given values we have

Actual Yield = 72% *  60.25 = 43.38 g

You might be interested in
At this pressure, how many molecules of air would there be in a 20 ∘C experimental chamber with a volume of 0.020 m3 ?
jonny [76]

Answer:

Explanation: The lowest pressure in a laboratory is 4.0×10^-11Pa

Using Ideal gas equation

PV = nRT

P= 4.0×10^-11Pa

V= 0.020m^3

T= 20+273= 293k

n=number of moles = m/A

Where m is the number of molecules and A is the Avogradro's number=6.02×10²³/mol

R=8.314J/(mol × K)

PV= m/A(RT)

4.0×10^-11 ×0.020 = m/6.02×10²³(8.314×293)

m = 4.0×10^-11×0.020×6.02×10^23 / (8.314×293)

m = 1.98×10^8 molecules

Therefore,the number of molecules is 1.98×10^8

8 0
2 years ago
If you have a pitcher of lemonade and the recipe calls for 2 lemons and you decided to use 4, would this be considered diluted o
pantera1 [17]

Answer: This would be considered concentrated because if you're upping the recipe on your own accord, it would be way more sour, causing the lemonade to be more concentrated. It would be diluted if you added less than 2 lemons.

7 0
3 years ago
Which<br> countries were the world leaders in space exploration throughout the 1960's?
g100num [7]

Answer:

the us and the soviet union

Explanation:

7 0
2 years ago
Help with chemistry please<br><br>Which chemical reaction involves the most oxygen atoms?
Ratling [72]
H2O is A chemical reaction of the most oxygen atoms
3 0
3 years ago
PLEASE HELP ME WITH THIS ONE QUESTION!!
Ksenya-84 [330]
2 I think not 100% tho
5 0
3 years ago
Other questions:
  • Calcium oxide reacts with water to produce calcium hydroxide and heat as shown by the equation. CaO(s) + H2O(l) → Ca(OH)2(aq) +
    7·1 answer
  • A horizontal tube carrying hot water has a surface temperature of 355.4 K and an outside diameter
    12·1 answer
  • Item 4 part a if a proton and an electron are released when they are 4.50×10−10 m apart (typical atomic distances), find the ini
    15·1 answer
  • A strontium-90 atom that has lost 2 electrons has ________ protons, ________ neutrons, and ________ electrons.
    14·2 answers
  • Which is the number of atoms in 4.5 moles of Hg, correctly written in scientific notation with the correct number of significant
    15·2 answers
  • Salt and sugar are poured into a glass of water and stirred. Slowly, the salt and sugar crystals become harder to see and then c
    5·1 answer
  • What is an succession? (69) points HELP!
    15·2 answers
  • Please help! Due today!
    9·1 answer
  • If someone gave you flour, sugar, butter, eggs, baking soda, and salt, what could those ingredients turn into?
    6·1 answer
  • Determine the osmotic pressure (atm) of an aqueous sugar solution with a
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!