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chubhunter [2.5K]
3 years ago
5

Sulfur reacts with oxygen to form sulfur dioxide (SO2(g), mc010-1.jpgHf = –296.8 kJ/mol) according to the equation below. mc010-

2.jpg What is the enthalpy change for the reaction?
–593.6 kJ –296.8 kJ 296.8 kJ 593.6 kJ
Chemistry
2 answers:
Makovka662 [10]3 years ago
7 0

Answer:

b

Explanation:

BlackZzzverrR [31]3 years ago
4 0
We want: 
S(s) + O2(g) --> SO2(g) 
So the following are the given:
1) S(s) + 3/2O2(g) --> SO3(g) ∆H = -395.8 kJ/mole 
2) 2SO2 + O2 --> 2SO3(g) ∆H = -198.2 kJ/mole 
Reverse Equation 2) and then  divide by 2 
SO3(g) --> SO2(s) + 1/2O2(g) ∆H = +99.1 kJ/mole 
Add Equation 1) 
S(s) + O2(g) --> SO2(g) ∆H = -296.7 kJ/mole
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Explain what environmental bias means. What are the categories that
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Explanation:

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3 years ago
Which metal will react spontaneously with Cu2+ (aq) at 25°C?
Gwar [14]

Answer:

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Explanation:

The standard reduction potentials are

                                              <u>E°/V </u>

Au³⁺(aq ) + 3e⁻  ⟶  Au(s);     1.42

Hg²⁺(aq)  + 2e⁻  ⟶  Hg(l);     0.85

Ag⁺(aq)    +   e⁻  ⟶  Ag(s);    0.80

Cu²⁺(aq)   + 2e⁻ ⟶  Cu(s);   0.34

Mg2+(aq) + 2e- ⟶  Mg(s);   -2.38

The more negative the standard reduction potential, the stronger the metal is as a reducing agent.

Mg is the only metal with a standard reduction potential lower than that of Cu, so

Only Mg will react spontaneously with Cu²⁺.

 

5 0
2 years ago
Read 2 more answers
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