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
Hoochie [10]
3 years ago
14

How many milliliters of 0.200 M FeCl3 are needed to react with an excess of Na2S to produce 0.345 g of Fe2S3 if the percent yiel

d for the reaction is 65.0%? 3 Na2S(aq) + 2 FeCl3(aq) →→ Fe2S3(s) + 6 NaCl(aq)
Chemistry
1 answer:
GuDViN [60]3 years ago
8 0

Answer:

25.53mL of 0.200 M FeCl₃ are needed to produce 0.345g of Fe₂S₃

Explanation:

Based on the reaction of the problem, 1 mole of Fe₂S₃ is produced from 2 moles of FeCl₃.

0.345g of Fe₂S₃ are (Molar mass: 207.9g/mol):

0.345g of Fe₂S₃ ₓ (1 mol / 207.9g) = <em>1.6595x10⁻³ moles Fe₂S₃</em>

Moles of Fe needed to produce these moles of Fe₂S₃ are:

1.6595x10⁻³ moles Fe₂S₃ ₓ ( 2 moles FeCl₃ / 1 mole Fe₂S₃) =

<em>3.3189x10⁻³ moles of FeCl₃</em>

As the percent yield of the reaction is 65.0%, the moles of FeCl₃ you need to add are:

3.3189x10⁻³ moles of FeCl₃ ₓ (100.0% / 65.0%) = <em>5.106x10⁻³ moles of FeCl₃</em>

A solution 0.200M contains 0.200 moles per L. Volume to obtain 5.106x10⁻³ moles is:

<em>5.106x10⁻³ moles of FeCl₃ ₓ ( 1L / 0.200mol) = 0.02553L = </em>

<h3>25.53mL of 0.200 M FeCl₃ are needed to produce 0.345g of Fe₂S₃</h3>

You might be interested in
What is the source of energy for an earthquake
MA_775_DIABLO [31]
Seismic waves is the energy of and earthquake aka Elastic Energy
3 0
3 years ago
Read 2 more answers
Please help me out with this​
d1i1m1o1n [39]
Answer
I think it’s 5
Explanation
4 0
2 years ago
What actions affect blood pH
galben [10]
Integestion, vomiting, diarrhea<span>, lung function, endocrine function, kidney function</span>
4 0
3 years ago
HEELLLPPPPPPPPPPPPPPPPPPPPPPPPPPP
sasho [114]

I would say it is answer choice C, Laws are based on proven hypothesis by many different scientists.

4 0
2 years ago
The maximum oxygen uptake is known as the __________.
andrezito [222]
The maximum oxygen uptake is known as the VO2 max.
4 0
3 years ago
Read 2 more answers
Other questions:
  • The testable question in a science investigation reads: “How does the size of a motor affect the speed of the vehicle?” What is
    7·1 answer
  • It is important that water is a powerful solvent because ____?
    5·1 answer
  • From what are chemical sedimentary rocks formed?
    11·2 answers
  • What measure remains consistent no matter its location
    13·2 answers
  • The cochlea is a liquid-filled cavity in the inner ear.<br> t or f?
    14·1 answer
  • Drag the tiles to the correct boxes to complete the pairs.
    7·1 answer
  • What elements mass number is 15
    12·2 answers
  • What element is solid at room temperature shiny malleable and a good conductor of heat
    14·1 answer
  • Calculate the molarity of the two solutions.
    12·1 answer
  • Noble gases have a blank balance she’ll with blank electrons. Because their balance she’ll is full they blank need to borrow or
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!