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
puteri [66]
2 years ago
5

Calculate ΔH o rxn for the following: CH4(g) + Cl2(g) → CCl4(l) + HCl(g)[unbalanced] ΔH o f [CH4(g)] = −74.87 kJ/mol ΔH o f [CCl

4(g)] = −96.0 kJ/mol ΔH o f [CCl4(l)] = −139 kJ/mol ΔH o f [HCl(g)] = −92.31 kJ/mol ΔH o f [HCl(aq)] = −167.46 kJ/mol ΔH o f [Cl(g)] = 121.0 kJ/mol
Chemistry
1 answer:
anzhelika [568]2 years ago
4 0

Answer:  ΔH for the reaction is -277.4 kJ

Explanation:

The balanced chemical reaction is,

CH_4(g)+Cl_2(g)\rightarrow CCl_4(l)+HCl(g)

The expression for enthalpy change is,

\Delta H=\sum [n\times \Delta H(products)]-\sum [n\times \Delta H(reactant)]

\Delta H=[(n_{CCl_4}\times \Delta H_{CCl_4})+(n_{HCl}\times B.E_{HCl}) ]-[(n_{CH_4}\times \Delta H_{CH_4})+n_{Cl_2}\times \Delta H_{Cl_2}]

where,

n = number of moles

Now put all the given values in this expression, we get

\Delta H=[(1\times -139)+(1\times -92.31) ]-[(1\times -74.87)+(1\times 121.0]

\Delta H=-277.4kJ

Therefore, the enthalpy change for this reaction is, -277.4 kJ

You might be interested in
What parts of the earth include hydrosphere
Natasha2012 [34]

Answer: Hydrosphere, discontinuous layer of water at or near Earth's surface. It includes all liquid and frozen surface waters, groundwater held in soil and rock, and atmospheric water vapour. Earth's environmental spheresEarth's environment includes the atmosphere, the hydrosphere, the lithosphere, and the biosphere.

Explanation:

6 0
3 years ago
Las Vegas, Nevada is in a desert. How does its rapid population growth affect the
Scrat [10]

Answer:

Many areas of the United States experience explosive population growth. <u>The more people that reside someplace, the more demand there is for water there.</u> Often these urban-growth <u>expansions are unplanned and place extraordinary stress on the water supply system, mainly on the groundwater.</u> <u>The stress often depletes groundwater supply, thereby causing wells to dry up.</u> Then water must be brought from somewhere else to support the local population.

Such situations have occurred all over the United States. For example, increased population growth in the southwestern United States has significantly lowered the water table 50 to 200 feet (depending on the area) since the 1940s. Managing urban growth, efforts to reduce water demand, conservation of the resource, and attempts to increase the water supply all address the problem of exceeding water resource limits.

<u>Human activities affect groundwater quality.</u>

<u>Here are some sources </u>and possible solutions to groundwater pollution:

<u>Agriculture</u>—Reduce usage of pesticides and fertilizers.

<u>Landfills</u>—Monitor for leakage and repair linings.

<u>Underground storage tanks</u>—Remove damaged and unused tanks.

<u>Household wastes</u>—Properly dispose of household hazardous waste.

<u>Septic tank leaks</u>—Properly maintain and repair tanks.

Explanation:

This came from the K12 learning course read this and the answer will be there. I underlined the important parts for the answer.

7 0
3 years ago
Complete by describing what the change of the state of the matter will be for the process to occur
Brilliant_brown [7]

Answer:

Freezing: Liquid turns into solid. Evaporation: Liquid turns into gas. Condensation: Gas turns into liquid. Sublimation: solid into gas. Deposition: Gas into solid.

Explanation:

4 0
2 years ago
Please help ASAP pleas help right answer please
Otrada [13]
It is -2 because the charge will be at zero and electrons lower the charge
5 0
3 years ago
One of the biggest news stories of 1996 was the successful cloning of Dolly the sheep. Dolly was the first mammal cloned from an
Nimfa-mama [501]

Answer:

I believe the answer you're looking for is DNA, not sure though

4 0
2 years ago
Other questions:
  • Helium is the lightest noble gas and the second most abundant element (after hydrogen) in the universe. The mass of a helium−4 a
    12·1 answer
  • At stp, what is the volume of 4.50 moles of nitrogen gas
    8·2 answers
  • How many neutrons does an element have if its atomic number is 45 and its mass number is 160?
    13·1 answer
  • A sample of neon effuses from a container in 77 seconds. The same amount of an unknown noble gas requires 157 seconds. Identify
    15·1 answer
  • Ethanol has heat specific heat of 2.5 j/g⋅°c, how much heat is released when 12 g of ethanol is cooled from 38.5 °c to 36.7 °c?
    7·2 answers
  • In the compound 5Cr2O3 the 5 represents
    15·2 answers
  • 45.6 grams of CH4 is placed into a 275 mL container at 55.00C. What is the pressure inside the container in atm?
    10·1 answer
  • In an experiment, equal amounts of water and soil were first heated and then left to cool. The graph shows the change in tempera
    8·2 answers
  • Sulfur is yellow, solid, nonmetal. what other elements is likely also a nonmetal?
    14·2 answers
  • A sample of carbon dioxide occupies 200 L at 22°C and 1.0 atm. At what temperature will
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!