CHEMISTRY HIGH SCHOOL

What is the ∆G for the following reaction under standard conditions (T = 298 K) for the formation of NH4NO3(s)? 2NH3(g) + 2O2(g) NH4NO3(s) + H2O(l)Given:
NH4NO3(s): ∆Hf = -365.56 kJ ∆Sf = 151.08 J/K.
NH3(g): ∆Hf = -46.11 kJ ∆Sf = 192.45 J/K.
H2O(l): ∆Hf = -285.830 kJ ∆Sf = 69.91 J/K.
O2(g): ∆Hf = 0.00 kJ ∆Sf = 205 J/K.

Answers

Answer 1
Answer: ∆G =  ∆H - T∆S

NH3: ∆G = -46.11x10^3 - (298)(192.45) = -103460.1 J
O2: ∆G = 0 - (298)(205) = -61090 J
NH4NO3: ∆G = -365.56x10^3 - (298)(151.08) = -410581.84 J
H2O: ∆G = -285.830x10^3 - (298)69.91) = -306663.18 J

∆Grex = ∆Gproducts - ∆Greactants
∆Grex = (-410581.84 +  -306663.18) - (-103460.1/2 + -61090/2)
∆Grex =-634969.97 J/mol = -634.97 kJ/mol

Related Questions

The distance from Earth to the Sun is 1.0 _____.
Disccuss what happens to copper in photochromic lenses from a redox perspective.
According to the FDA, products labeled gluten-free must contain less than _______ of gluten.a. 5 milligramsb. 10 gramsc. 20 milligramsd. 50 grams
If a gas is heated from 263 to 298 k, the volume is 24 l to 35 l at 1.00 atm pressure. what is the final pressure?
How many kilojoules are equivalent to 10 joules?

What is the element Ar classified as in the periodic table?

Answers

Ar is classified as Argon in the periodic table it is a Noble gas having atomic number 18
Me not looking at periodic table i believe its Argon.

Which of the following elements is an example of a metalloid? Silicon

Sodium

Silver

Platinum

Answers

Sodium is an earth-metal (group one), sliver and platinum are d-block metals.... Thus silicon is the metalloid and that is true because it looks like a metal being shiny blue-gray but it exhibit non-metal characteristics, except the fact that it can conduct electricity in a heated state.
The group of metalliods in the periodic table include: antimony, arsenic, boron, silicon, germanium, polonium all display semi-metal properties. So the answer would be Silicon.

How many days are really in a year

Answers

Its actually 356 and 1/4 days. thats why we have leap year!
Day of year is a number between 1 and 365 (January 1 is day 1).

Which of the following has the most electrons?A) Sr^{2+}
B) Rb
C) Cl^{-}
D) Kr

Answers

Sr^(2+) = 36
Rb = 37
Cl^(-) = 18
Kr = 36

So the one with the most is (B) Rb

During the 1920s, the trial of Sacco and Vanzetti,the Palmer raids, and the revival of the Ku Klux
Klan demonstrate that
(1) nativist sentiments were on the rise
(2) cultural values were similar between urban
and rural Americans
(3) popular support for international involvement
was increasing
(4) public support for limiting immigration was
declining

Answers

The right answer for the question that is being asked and shown above is that: "(2) cultural values were similar between urban and rural Americans." During the 1920s, the trial of Sacco and Vanzetti, the Palmer raids, and the revival of the Ku Klux Klan demonstrate that cultural values were similar between urban and rural Americans

What is the difference between a crystalline material and an amorphous material? Give an example of each type.

Answers

Answer :

As we know that there are two types of solids.

(1) Amorphous Solids

(2) Crystalline Solids

Amorphous Solids : It is a type of solids in which the constituent particles of the matter are arranged in the random manner.

That means there is no proper arrangement of atoms in solid lattice but the atoms or molecules are closely spaced that means they can move freely from one place to another.

The examples of amorphous solid are, plastics, glass, rubber, metallic glass, polymers, gel, fused silica, pitch tar, thin film lubricants, wax.

Crystalline Solids : It is a type of solids where the constituent particles of the matter are arranged in the specific manner.

That means there is a proper arrangement of atoms in solid lattice. They do not have space between the molecules or atoms and they can not move freely from one place to another.

The examples of crystalline solids are, quartz, calcite, sugar, mica, diamonds, snowflakes, rock, calcium fluoride, silicon dioxide, alum.
Other Questions
Which of the following is an example of radiation?A. boiling water on the stove B. sun bathing outside on a sunny day C. touching a stove and getting burned D. warm and cool water currents in the ocean
What is the name of a neutral group of atoms that are held together by covalent bond (this word has 8 letters)
To make a 2.0-mole solution, how many moles of solute must be dissolved in 0.50 liters of solution?0.25 moles solute 0.50 moles solute 1.0 mole solute 2.0 moles solute
When an oxygen atom forms an ion, it gains two electrons. What is the electrical charge of the oxygen ion? A. +2 B. -1 C. +1 D. -2