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
AfilCa [17]
3 years ago
6

Use Hess's law and the following equations to calculate the ΔHreaction for the reaction CO(g) + 3H2(g) CH4(g) + H2O(g). (Show yo

ur work.) (4 points) • C(s) + O2(g) CO(g) ΔH = –110.5 kJ • C(s) + 2H2(g) CH4(g) ΔH = –74.85 kJ • H2(g) + O2(g) H2O(g) ΔH = –241.83 kJ
Chemistry
1 answer:
Vesna [10]3 years ago
6 0

Answer: The enthalpy of reaction is, -206.18 kJ

Explanation:-

According to Hess’s law of constant heat summation, the heat absorbed or evolved in a given chemical equation is the same whether the process occurs in one step or several steps.

According to this law, the chemical equation can be treated as ordinary algebraic expression and can be added or subtracted to yield the required equation. That means the enthalpy change of the overall reaction is the sum of the enthalpy changes of the intermediate reactions.

The final reaction is

CO(g)+3H_2(g)\rightarrow CH_4(g)+H_2O(g)    \Delta H_{rxn}=?

The intermediate balanced chemical reaction will be,

(1) C(s)+\frac{1}{2}O_2(g)\rightarrow CO(g)     \Delta H_1=-110.5kJ

(2) C(s)+2H_2(g)\rightarrow CH_4(g)    \Delta H_2=-74.85kJ

(3) H_2(g)+\frac{1}{2}O_2(g)\rightarrow H_2O(g)    \Delta H_3=-241.83kJ

Now adding (2) and (3) and subtracting (1) , we get :

\Delta H_{rxn}=(\Delta H_2+\Delta H_3)-\Delta H_1

\Delta H_{rxn}=((-74.85)+(-241.83))-(-110.5)

\Delta H_{rxn}=-206.18kJ

Therefore, the enthalpy of reaction is, -206.18 kJ

You might be interested in
Indicate how you might prepare acetic acid from ethene
ruslelena [56]
Acetic acid can be prepared from ethane by oxidizing it. Acetic acid is generally a carboxylic acid. These acids can be made by the oxidation of alcohols using potassium dichromate(VI) solution with sulfuric acid. Ethane is made into acetic acid in two steps. First it is formed into an aldehyde and then to acetic acid.
8 0
2 years ago
write a balanced chemical equation for solid copper reacting with aqueous silver nitrate to produce aqueous copper (II) nitrate
sashaice [31]
Make sure have same amounts of species on both sides
Cu (s) + 2 AgNO3 (aq) -> Cu(NO3)2 (aq) + 2 Ag (s)
7 0
3 years ago
There are four different starting molecules that one might use to synthesize the illustrated alkyl halide as the major product u
Mkey [24]

Answer:

Explanation:

An electrophilic addition reaction occurs when an electrophile attacks a substrate, with the end result being the inclusion of one or many comparatively straightforward molecules along with multiple bonds.

In the given question, the hydrogen bromide provides the electrophile while the bromide is the nucleophile. The mechanism proceeds with the attack of the electrophile on the carbon, followed by deprotonation. This process is continued with a formation of carbocation and the bromide(nucleophile) finally bonds to the carbocation to form a stable product.

The first diagram showcases the possible various starting molecules for the synthesis while the second diagram illustrates their mechanism.

6 0
2 years ago
The process of nuclear division that produces haploid sex cells is mitosis. Please select the best answer from the choices provi
Ivanshal [37]

Answer:

Explanation:

meiosis

Haploid sperm and eggs are produced via meiosis.

4 0
2 years ago
An Olympic swimming pool is 50 meters long. You swim from one end to the other four times.How many meters do you swim?
barxatty [35]

Answer:

200 meters

Explanation:

if u swim for each end 4 times, and its 50 meters long, 50 x 4 = 200 meters

4 0
3 years ago
Read 2 more answers
Other questions:
  • Two chemical reactions are shown:
    13·1 answer
  • Please help me with chemistry!
    14·1 answer
  • Natural gas is a A. type of solar energy. B. type of electricity. C. nonrenewable resource. D. renewable resource.
    12·1 answer
  • A sample of chlorine containing isotopes of mass numbers 35 and 37 was analysed in a mass-spectrometer. How many peaks correspon
    9·1 answer
  • Why are bottles made from amorphous solid's such as plastic and glass
    6·1 answer
  • In principle, the equilibrium in the dehydration of an alcohol could be shifted to the right be removal of water. Why is this ta
    6·1 answer
  • When scientists use one of their five senses to gather information, they are A. making an observation. B. making an inference. C
    7·2 answers
  • What is the name of this molecule?<br> A.Butane<br> B.Butene<br> C.Propene<br> D.Propane
    15·1 answer
  • What mass of calcium chloride will be produced from 3.750 moles of hcl reacting with ca(oh)2
    5·1 answer
  • What is the order of decreasing ionization energy?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!