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
lukranit [14]
3 years ago
6

HQ5.49 Use standard enthalpies of formation to calculate the standard enthalpy of reaction for the following reaction: 2 H 2 ​ S

(g) + 3 O 2 ​ (g) → 2 H 2 ​ O(l) + 2 SO 2 ​ (g) ΔH ∘ rxn ​
Chemistry
1 answer:
weqwewe [10]3 years ago
5 0
Answer is: <span>the standard enthalpy of reaction is</span> -1124,2 kJ/mol.
ΔHf(H₂S) = -20.5 kJ/mol
ΔHf(O₂)=0 kJ/mol.
ΔHf(H₂O) = -285.8 kJ/mol.
ΔHf(SO₂) = -296.8 kJ/mol.
ΔHrxn = ∑ΔHf (products of reaction) - ∑ΔHf (reactants).<span>
ΔHrxn - enthalpy change of chemical reaction.
<span>ΔHf - enthalpy of formation of reactants or products.
</span></span>ΔHrxn = (2 · (-285,8) + 2 · (-296,8)) - (2 · (-20,5)) · kJ/mol.
ΔHrxn = -1124,2 kJ/mol.

You might be interested in
A sample of water and alcohol are mixed. What method should be used to separate them?
Margaret [11]

Fractional Distillation is the answer


6 0
3 years ago
A 50.00 g sample of an unknown metal is heated
aleksley [76]
The water and heathfshiccu
8 0
3 years ago
which of the following is a product formed whrb NO2 and H2O react together A O2 B HNO3 C H2 D P(OH)2
marshall27 [118]
The answer to your question is HNO3
8 0
3 years ago
Read 2 more answers
When there are more electrons than protons an object has an overall<br> charge.
azamat

Answer:it would have a negative charge because  electrons are negative

Explanation:

7 0
3 years ago
The most simple level of organization in living things is the tissue level.
murzikaleks [220]
<span>The simplest level of organization for living things is a single organelle, which is composed of aggregates of macromolecules. so it is false</span>
3 0
3 years ago
Read 2 more answers
Other questions:
  • Thomson's experiments were significant in that they questioned
    13·2 answers
  • What three parts make up an atom?
    11·2 answers
  • MATH. Tom bought 15 party hats priced at 3 for $0.65 and 56 noisemakers priced at 7 for $1.25. What was the total cost of the ha
    9·2 answers
  • Describe the process of evaporation.
    7·1 answer
  • Early Earth was largely anoxic with very little oxygen present in the atmosphere. However, approximately 2 billion years ago, a
    14·1 answer
  • Draw structural formula of a cyclic secondary alcohol with the molecular formula c3h6o.
    5·1 answer
  • The free energy change for the following reaction at 25 °C, when [Cd2+] = 1.20 M and [Fe2+] = 1.40×10-3 M, is -23.9 kJ: Cd2+(1.2
    8·1 answer
  • Which of the following lists stars in order of increasing size?
    5·2 answers
  • That do you know about gravity
    10·2 answers
  • 6.11C In 1976, the Viking I Lander was sent to Mars to analyze atmospheric gases and soil samples. The Viking I Lander was most
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!