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
storchak [24]
3 years ago
7

Consider the reaction. 2c(s,graphite) h2= c2h2(g) Based on the equation and the information in the table, what is the enthalpy o

f the reaction?
A.453.46 kJ
B.-226.73 kJ (not this one, I got it wrong)
C.226.73 kJ
D.453.46 kJ
Chemistry
2 answers:
xxTIMURxx [149]3 years ago
8 0
<h3>The enthalpy of the reaction : C.226.73 kJ</h3><h3>Further explanation</h3>

Delta H reaction (ΔH) is the amount of heat change between the system and its environment

(ΔH) can be positive (endothermic = requires heat) or negative (exothermic = releasing heat)

The change in enthalpy in the formation of 1 mole of the elements is called enthalpy of formation

Delta H reaction (ΔH) is the difference between product enthalpy and reactant enthalpy (Hp-Hr)

Reaction :

2C + H2 -> C2H2

(ΔH) reaction = (ΔH) product - (ΔH) reactants

(ΔH) reaction = (ΔH) C2H2 - ((ΔH) C + (ΔH) H2)

for free element (ΔH) it has zero value, so (ΔH) C and (ΔH) H2 have zero value

From the available data: Hf (kJ / mol) C2 H2 (g)=  226.73

then

(ΔH) reaction = ΔH) C2H2 - ((ΔH) C + (ΔH) H2)

(ΔH) reaction = 226.73 - (0 + 0)

(ΔH) reaction = 226.73 (answer C)

<h3>Learn more</h3>

(ΔH) reaction

brainly.com/question/1889660

Keywords : (ΔH) reaction, C2H2

spayn [35]3 years ago
5 0

Answer:

C. 226.73 kJ

Explanation:

this is correct on ed-genuity, hope this helps! :)

You might be interested in
Name the parts of an electromagnet
Oxana [17]

Answer:

The iron core, copper wire, and an electricity source.

Explanation: Me

7 0
3 years ago
Temperature of the water to the nearest degree:___ °C
forsale [732]

Answer:

From the image the answer is 24.

8 0
3 years ago
Read 2 more answers
What are the characteristics of an experiment? What are key parts of an experiment?
Alecsey [184]

Answer:

independent variable - the thing you change

dependent variable - the thing you measure

control variables - the things you keep the same

6 0
4 years ago
The big bang theory is one of the most accepted theories on the origin of the universe because of scientific evidence, such as _
mafiozo [28]
C left over heat from the explosion was found
4 0
4 years ago
Which one of the following statements is FALSE? a In a neutralization reaction, an acid reacts with base to produce a salt and H
pishuonlain [190]

Answer: Option (c) is the correct answer.

Explanation:

HF is a weak acid and not a strong acid. This is because fluorine is a highly electronegative atom and when it combines with a hydrogen atom then it will attract the valence electron of hydrogen atom more towards itself.

As a result, it will not dissociates easily to give hydrogen ion. Hence, it acts as a weak acid.

A neutralization reaction is defined as a reaction in which an acid reacts with a base to give salt and water. For example, HCl + NaOH \rightarrow NaCl + H_{2}O

It is true that, spectator ions "appear in the total ionic equation for a reaction, but not in the net ionic equation".

Titration is defined as a process in which concentration of an unknown solution is determined using a solution of known concentration.

Thus, we can conclude that the statement HF, HCl, and HNO3 are all examples of strong acids, is false.

7 0
3 years ago
Other questions:
  • Seven vans each hold 6 passengers. Each passenger is carrying 20 candies divided equally among 5 small boxes. How many candies a
    5·1 answer
  • What is the pH of a solution formed at the neutralization point by the reaction of 25.0 mL of 0.180 molar acetic acid (Ka = 1.8
    6·1 answer
  • Which of the following explains the conservation of mass during cellular respiration?
    11·1 answer
  • If the pressure, volume, and temperature of a gas are known, which can most likely be found by using the ideal gas law
    10·2 answers
  • Be sure to answer all parts.
    12·1 answer
  • Which pair of elements can be used to determine the age of a fossil that is over one billion years old?
    13·3 answers
  • How much solar radiation is reflected back by clouds? 5 percent
    14·2 answers
  • At 258C, Kp 5 2.9 3 1023 for the reactionNH4OCONH21s2m 2NH31 g21 CO21 g2In an experiment carried out at 258C, a certain amount o
    11·1 answer
  • Lennon-7<br> which cell is known as active cell<br>-​
    6·1 answer
  • 100 POINTS FOR QUESTION
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!