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
enyata [817]
3 years ago
15

Enthalpy of combustion of ethyl alcohol, C2 H5 OH, is – 950 kJ mol–1. How much heat is evolved when one gram of ethyl alcohol bu

rns?​
Chemistry
1 answer:
melomori [17]3 years ago
7 0
<h3>Answer:</h3>

20.62 Kilo-joules

<h3>Explanation:</h3>
  • The Enthalpy of combustion of ethyl alcohol is -950 kJ/mol.
  • This means that 1 mole of ethyl alcohol evolves a quantity of heat of 950 Joules when burned.

Molar mass of ethyl ethanol = 46.08 g/mol

Therefore;

46.08 g of  C₂H₅OH evolves heat equivalent to 950 kilojoules

We can calculate the amount of heat evolved by 1 g of C₂H₅OH

Heat evolved by 1 g of C₂H₅OH  = Molar enthalpy of combustion ÷ Molar mass

                                      = 950 kJ/mol ÷ 46.08 g/mol

                                      = 20.62 Kj/g

Therefore, a gram of C₂H₅OH  will evolve 20.62 kilo-joules of heat

You might be interested in
Whats the Boiling point of a Solution made by dissolving 31 g of NaCl of Water?
Anna11 [10]
101° C is the answer.
5 0
3 years ago
AP CHEMISTRY -If any of these questions in the image (NET IONIC BALANCED EQUATIONS w/ states of matter) can be answered, especia
OLga [1]

3) CH₃-COOH + NH₃ → CH₃-COO⁻NH₄⁺

4) 2 FeCl₃ + 3 Ag₂SO₃ → Fe₂(SO₃)₃ + 6 AgCl

5) 2 Al + 3 NiCl₂ → 2 AlCl₃ + 3 Ni

6) 4 LiCl + Pb(NO₂)₄ → 4 LiNO₂ + PbCl₄

7) 3 H₂SO₄ + 2 Al(OH)₃ → Al₂(SO₄)₃ + 6 H₂O

8) Cd(NO₃)₂ + Na₂S → CdS + 2 NaNO₃

9) Cr₂(SO₄)₃ + 3 (NH₄)₂CO₃ → Cr₂(CO₃)₃ + 3 (NH₄)₂SO₄

5 0
3 years ago
What energy occurs when a plant uses energy from the sun to make surgar stored in fruit?
Anarel [89]
The energy change? from light energy to chemical energy 
6 0
3 years ago
Read 2 more answers
Which set of substances is used for photosynthesis and released by cellular respiration?
disa [49]

A. Oxygen is produced during cellular respiration and stored during photosynthesis. B. Carbon dioxide and water released by cellular respiration are used in photosynthesis. C. Photosynthesis releases the energy that is stored during the process of cellular respiration


hope it helps

7 0
3 years ago
Read 2 more answers
How many atoms are in 1.7 mols of CHF3
erastovalidia [21]

Given :

Number of moles of CHF₃ is 1.7 .

Solution :

We know, 1 mole of any complex contains 6.022 × 10²³ molecules.

Let, 1.7 moles of CHF₃ contains n numbers of molecules.

So, n = 1.7 × 6.022 × 10²³ molecules

n = 10.2374 × 10²³ molecules

n = 1.0237 × 10²³ molecules

Hence, this is the required solution.

5 0
2 years ago
Other questions:
  • Carbon-12 and carbon-13 are isotopes of carbon. Which of the following statements is correct?
    7·1 answer
  • Compounds formed from only non-metals consist of particles called
    13·1 answer
  • Drug testing if a person do not use drugs how cam he test positive on hair drug test
    7·1 answer
  • Determine whether each of the following is exothermic or endothermic and indicate the sign of ΔH.
    10·1 answer
  • Uranium-238 decays to Lead-206. Both Rock X and Rock Y initially had a ratio of 100%. Uranium-238 to 0% Lead-206. Today, Rock X
    12·1 answer
  • Are parts of the circulatory system<br> .The<br> , and
    10·1 answer
  • Students were asked to place a mint in their mouths and determine how long it took for the mint to dissolve. The
    9·1 answer
  • What is the identity of the atom shown?
    10·2 answers
  • What is the formula for Tetrachlorine pentaiodide
    7·1 answer
  • What is created when an acid is mixed with a base?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!