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
klasskru [66]
3 years ago
14

Classify each of the following as an exothermic or an endothermic reaction:

Chemistry
2 answers:
ira [324]3 years ago
6 0
Equation a. C3H8(g) + O2(g) → CO2(g) + H2O(g) + 2220 kj
is endothermic. + 2220 kj
Equation b. 2 Na(s) + Cl2(g) → 2 NaCl(s) + 819kJ
is also endothermic since the overall energy change is positive. + 819kJ
The equation c. PCl5(g) + 67kj → PCl3(g) + Cl2(g) is endothermic since it requires anergy to proceed.
BigorU [14]3 years ago
5 0

Answer:

Reaction A) is exothermic

Reaction B) is exothermic

Reaction C) is endothermic.

Explanation:

Hi, by definition an exothermic reaction is the one that generates heat as it occurs. An endothermic reaction on the other hand, consumes heat from the environment as it happens.

<u>This can be seen, when energy is put as a reactant in the equation. When it appears as a procuct the reaction is exothermic.</u>

Being all that said:

  • Reaction A) is exothermic
  • Reaction B) is exothermic
  • Reaction C) is endothermic.
You might be interested in
At the boiling point, the vapor pressure of a liquid is equal to the _______.
Marat540 [252]
At the boiling point, the vapor pressure of a liquid is equal to the atmospheric pressure.
6 0
3 years ago
Chemical changes<br> involve the breaking and making of chemical bonds.<br><br> The answer is always
larisa [96]

Answer:

Chemical reactions involve breaking chemical bonds between reactant molecules (particles) and forming new bonds between atoms in product particles (molecules). The number of atoms before and after the chemical change is the same but the number of molecules will change.

Explanation:

6 0
2 years ago
What happened to the celery if you put in food color water ​
mixer [17]

Answer:

the celery would change colour!

Explanation:

8 0
3 years ago
What is the net ionic equation of the reaction of mgso4 with sr(no3)2?
Bad White [126]

Balanced chemical reaction:  

MgSO₄(aq) + Sr(NO₃)₂(aq) → Mg(NO₃)₂(aq) + SrSO₄(s).

Ionic reaction:  

Mg²⁺(aq) + SO₄²⁻(aq) + Sr²⁺(aq) + 2NO₃⁻(aq) → Mg²⁺(aq) + 2NO₃⁻(aq) + SrSO₄(s).

Net ionic reaction:

Sr²⁺(aq) + SO₄²⁻(aq) → SrSO₄(s).

Magnesium sulfate (MgSO₄), strontium nitrate (Sr(NO₃)₂ and magnesium nitrate (Mg(NO₃)₂) are soluble in water. Strontium sulfate (SrSO₄) is not soluble in water.

This chemical reaction is double displacement reaction - cations and anions of the two reactants switch places and form two new compounds.


6 0
3 years ago
Read 2 more answers
Waves move out through the ground from the source of an<br> earthquake.<br> True<br> ► False
goblinko [34]

I believe the answer would be true

3 0
3 years ago
Other questions:
  • 1. Directions: Select each correct answer.
    5·2 answers
  • Which of the following is the largest volume? (B?)
    7·1 answer
  • Which type of radioactive decay only releases energy?
    11·1 answer
  • Calculate the standard entropy of vaporization of ethanol at its boiling point 285 K. The standard molar enthalpy of vaporizatio
    13·2 answers
  • Identify three factors that characterize aquatic systems
    14·1 answer
  • The chemical formula for water is H2O2. True or False
    7·2 answers
  • What is the definition of atomic group
    5·1 answer
  • The density of a 0.75M NaOH solution is 1.1g/ml. Calculate the mass percent of NaOH in the solution
    14·1 answer
  • Name the following inorganic compounds:
    10·1 answer
  • Which has more calories: table sugar or aspartame?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!