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
7nadin3 [17]
4 years ago
9

One application of Hess's Law (which works for ΔH, ΔS, and ΔG) is calculating the overall energy of a reaction using standard en

ergies of formation of products and reactants. What is the standard change in free energy for the reaction: 4 KClO3(s) → 3 KClO4(s) + KCl(s)? Use the following standard gibbs energies of formation: ΔGf(KClO3(s)) = -290.9 kJ/mol; ΔGf(KClO4(s)) = -300.4 kJ/mol; ΔGf(KCl(s)) = -409 kJ/mol
Chemistry
1 answer:
VikaD [51]4 years ago
3 0

Answer:

The standard change in free energy for the reaction =  - 437.5 kj/mole

Explanation:

The standard change in free energy for the reaction:

                              4 KClO₃ (s) → 3 KClO₄(s) + KCl(s)

Given that   ΔGf(KClO3(s)) = -290.9 kJ/mol;

                    ΔGf(KClO4(s)) = -300.4 kJ/mol;

                    ΔGf(KCl(s)) = -409 kJ/mol

According to Hess's law

ΔGr (Free energy change of reaction)= ∑(Product free energy - reactant free energy)

               ⇒ ΔGr⁰ = {3 x (-300.4) + (-409)} - {3 x (- 290.9)}

                            = - 901.2 - 409 + 872.7

                            =  - 437.5 kj/mole

You might be interested in
Maximum number of possible structural of C7H9N
MrRissso [65]

There are 5 possible structural isomers with the molecular formula C₇H₉N.

Explanation:

You may find the chemical diagrams of the structural isomers in the attached picture.

Learn more about:

structural isomers

brainly.com/question/4812147

#learnwithBrainly

3 0
3 years ago
How does food waste contribute to climate change?
m_a_m_a [10]

Answer:

When we waste food, we also waste all the energy and water it takes to grow, harvest, transport, and package it. And if food goes to the landfill and rots, it produces methane—a greenhouse gas even more potent than carbon dioxide.

Explanation:

3 0
4 years ago
HELP QUICK I HAVE A QUIZ ITS JUST MULTIPLE CHOICE
melamori03 [73]

Answer:

i think its A

Explanatio

5 0
4 years ago
What is the first step in nucleophilic addition under acidic conditions?
damaskus [11]

Answer:

A nucleophile view the full answer Question 3 (1 point) What is the first step in nucleophilic addition under acidic conditions? Protonation of the nucleophile Addition of the nucleophile Loss of water Protonation of the carbonyl

Explanation:

5 0
3 years ago
Read 2 more answers
Which pair of atoms has the highest electronegativity difference?
zavuch27 [327]
The best way to accurately determine the pair with the highest electronegativity difference is by using their corresponding electronegativity values. For the each of the choices, the difference is:

A. H-S = 2.5 - 2.1 = 0.4
B. H-Cl = 3 - 2.1 = 0.9
C. N-H = 3 - 2.1 = 0.9
D. O-H = 3.5 - 2.1 = 1.4
E. C-H = 2.5 - 2.1 = 0.4

As show, D. has the highest difference. Without looking at their values, you can also determine the pair with the highest difference by taking note of the trend of electronegativity on the periodic table. Electronegativity increases as you go right a group and up a period. This makes oxygen the most electronegative element among the other elements paired with hydrogen.
4 0
3 years ago
Other questions:
  • What elements have configurations that end in ns2np2?
    14·1 answer
  • What are the 4 things attached to the center carbon in all amino acids?
    6·1 answer
  • AL2O3 and ZNO are which oxides​
    5·1 answer
  • To make a table of elements, dmitri
    9·1 answer
  • Determine the number of constitutional isomers for Hexane and draw the structure for Hexane?​
    14·1 answer
  • For each of the following compounds, decide whether the compound's solubility in aqueous solution changes with pH. If the solubi
    13·1 answer
  • What is formula iron metal?
    13·2 answers
  • 2H2 + O2 2H20<br> How many moles of oxygen are consumed if 8 moles H2 are used?
    9·1 answer
  • What is the total number of moles of oxygen atoms present in one mole of Mg(CIO3)2?
    8·2 answers
  • Plz helpppppppppppppppppp
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!