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
andreev551 [17]
3 years ago
10

Which of the following statements is true for an exothermic reaction?

Chemistry
2 answers:
shutvik [7]3 years ago
6 0
The enthalpy change for an exothermic reaction is negative because heat is being released, so that takes out two of the responses. Since energy is being released into the surroundings due to the exothermic reaction, the potential energy of the products is lower than that of the reactants. Energy is being put in to make the reaction occur, but then that energy is all being released into the surroundings thus a lower potential energy level for the products
Natalija [7]3 years ago
5 0

<u>Ans: The products have lower potential energy than the reactants, and the enthalpy change is negative. </u>

In general, chemical reactions can be broadly classified into two categories:

1) Exothermic

2) Endothermic

Exothermic reactions proceed with the evolution of heat. Here, the reactants have a higher potential energy which is released as the reaction progresses to form products. Consequently, the products are in a lower energy state. Since energy is released, the enthalpy change will be negative.

In contrast, endothermic reactions proceed with the absorption of heat. Here,the products will be in a higher energy state. Since energy is absorbed, the enthalpy change will be positive.

You might be interested in
when an electron gets closer to the nucleus does the attraction or repulsion grow weaker or stronger?
klasskru [66]

Answer:

Weaker

Explanation:

Since the charges on nucleus and electron are opposite in nature, an attractive force exists between them. It is true in generally, that when objects are made to move closer together in the direction of an attractive force, potential energy decreases (and increases whenever attracting objects are force to move apart).

6 0
3 years ago
How much sucrose can dissolve in 200g of water at 70 °C?​
valentinak56 [21]
Is 320 g per 100 g of water.
6 0
2 years ago
Read 2 more answers
How could natural selection lead to speciation?
Harlamova29_29 [7]

Answer:

Speciation can be driven by evolution, which is a process that results in the accumulation of many small genetic changes called mutations in a population over a long period of time. ... Natural selection can result in organisms that are more likely to survive and reproduce and may eventually lead to speciation.

I hope it's helpful!

6 0
3 years ago
Density of 30.00 mL of H2O
ohaa [14]

its not possible sorry

6 0
3 years ago
Classify each salt as acidic, basic, or neutral? -nh4cl -ca(no32
vichka [17]
The pH of salt depends on the component acid and base that comprise them. For example, if the salt is made up of strong acid and weak base then, the salt is acidic. If the salt is formed from strong base and weak acid then, the salt is basic. For this item, NH4Cl is acidic and also Ca(NO3)2 is acidic. 
3 0
3 years ago
Other questions:
  • To find the number of neutrons in To find the number of neutrons in and <br> you would subtract
    15·1 answer
  • If each vitamin has <br> 0.8 grams<br> of calcium, how much calcium will <br> 2.6<br> vitamins have?
    5·1 answer
  • Radio waves travel at the speed of light, which is 3X10^8 m/s. How many minutes does it take for a radio message to reach earth
    13·1 answer
  • Which of the following regions of the periodic table tends to prefer a –1 charge and occupies Group 17?
    8·1 answer
  • How many atoms are in CeCL3
    7·2 answers
  • Protein structure characterized by the combination of different proteins that all together are required for protein function in
    5·1 answer
  • If a 520 mg sample of technetium-99 is used for diagnostic procedure, how much of Tc-99 remains after 30.0h? Half life of Tc-99
    15·1 answer
  • 4. The speed of a wave is 75m/s. If the wavelength of the wave is 5m, what is the frequency of the
    15·2 answers
  • Calculate the density of the red block. Round your answer to the nearest hundredth.
    13·1 answer
  • Assuming that the smallest measurable wavelength in an experiment is 0.830 fm , what is the maximum mass of an object traveling
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!