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
zhuklara [117]
3 years ago
5

2KClO3(s) => 2KCl(s) + 3O2(g) is there an increase or decrease of entropy?

Chemistry
1 answer:
ValentinkaMS [17]3 years ago
3 0

Answer:

Entropy increases

Explanation:

Entropy (S) is a measure of the degree of disorder.  For a given substance - say water - across phases the following is true ...

S(ice) < S(water) << S(steam)

For a chemical process, entropy changes can be related to increasing or decreasing molar volumes of gas from reactant side of equation to product side of equation. That is ...

if molar volumes of gas increase, then entropy increases, and

if molar volumes of gas decrease, then entropy decreases.

For the reaction                  2KClO₃(s) => 2KCl(s) + 3O₂(g)

molar volumes of gas =>       0Vm*            0Vm      3Vm

*molar volumes (Vm) apply only to gas phase substances. Solids and liquids do not have molar volume.

Since the reaction produces 3 molar volumes of O₂(g) product vs 0 molar volumes of reactant, then the reaction is showing an increase in molar volumes of gas phase substances and its entropy is therefore increasing.

You might be interested in
Based on the collision theory, which factors are likely to increase the rate of reaction? Select all that apply.
Alexus [3.1K]

Answer:

Option a

Explanation:

can u mark brainliest?

7 0
2 years ago
The reaction between alcohols and carboxylic acids is called
aleksandrvk [35]

Explanation:

When a carboxylic acid is treated with an alcohol and an acid catalyst, an ester is formed (along with water). This reaction is called the Fischer esterification.

4 0
2 years ago
If a buffer solution is 0.190 m in a weak acid (ka = 8.2 × 10-5) and 0.590 m in its conjugate base, what is the ph?\
Lubov Fominskaja [6]
<span>You use the Henderson - Hasselbalch equation pH = pKa + log ([salt]/[acid]) pKa = -log (8.2*10^-5) = 4.081 pH = 4.081 + (0.590/0.190) pH = 4.081 + log 3.105 pH = 4.081 + 0.49206 pH = 4.573</span>
5 0
3 years ago
An electromagnet works because ________
Gnoma [55]
I believe this answer is A. Moving electrons generate magnetic forces. Hope this helps!!! :)
4 0
3 years ago
Read 2 more answers
How to balance NH3+NO=N2+H2O
Kryger [21]

Explanation:

NH₃+NO=N₂+H₂O;

NH₃+NO=N₂+6H₂O;

NH₃+6NO=N₂+6H₂O;

4NH₃+6NO=N₂+6H₂O;

4NH₃+6NO=5N₂+6H₂O.

3 0
1 year ago
Other questions:
  • A compound contains only nitrogen and oxygen and is 30.5% nitrogen by mass. A gaseous sample of the compound has a density of 3.
    11·1 answer
  • I need help with this question please
    8·1 answer
  • Which chemical reaction falls under the study of electrochemistry?
    5·2 answers
  • The amount of heat required to produce a given change in temperature can be calculated using the following formula:
    13·1 answer
  • If you compare the egg to a cell, what did you learn about how water moves into or out of a cell
    5·1 answer
  • H A and H B are both weak acids in water, and HA is a stronger acid than HB. Which of the following statements is correct? Selec
    14·1 answer
  • What weight of sodium formate must be added to 4.00L of 1.00 M formic acid to produce a buffer solution that has a pH of 3.50?
    11·1 answer
  • How many moles of CaO will be produced from 23.9 g of Ca?<br>2Ca(s) + O2(g) – 20:0(3)<br>mol​
    11·1 answer
  • Answer questions using the two magnetic field models (will mark brainliest)
    12·1 answer
  • What is the resistance of a 150 W lightbulb connected to a 24 V voltage source?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!