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
KatRina [158]
3 years ago
11

The reaction of hydrogen bromide(g) with chlorine(g) to form hydrogen chloride(g) and bromine(g) proceeds as follows: 2HBr(g) +

Cl2(g)2HCl(g) + Br2(g) When 23.9 g HBr(g) reacts with sufficient Cl2(g), 12.0 kJ is evolved. Calculate the value of rH for the chemical equation given.
Chemistry
1 answer:
VladimirAG [237]3 years ago
8 0

Answer:

The enthalpy of reaction per mole of HBr for this reaction = ΔrH = -40.62 kJ/mole.

Explanation:

2HBr(g) + Cl2(g) → 2HCl(g) + Br2(g)

When 23.9 g HBr(g) reacts with sufficient Cl2(g), 12.0 kJ of heat is evolved, calculate the value of ΔrH for the chemical reaction.

Note that ΔrH is the enthalpy per mole for the reaction.

Molar mass of HBr (g) = 80.91 g/mol.

Hence, 1 mole of HBr = 80.91 g

23.9 g of HBr led to the reaction giving off 12.0 kJ of heat

80.91 g of HBr will lead to the evolution of (80.91 × 12/23.9) = 40.62 kJ heat is given off.

Hence, 40.62 kJ of heat is given off per 80.91 g of HBr.

This directly translates to that 40.62 kJ of heat is given off per 1 mole of HBr

Hence, the heat given off per mole of HBr for this reaction is 40.62 kJ/mole.

But since the reaction liberates heat, it means the reaction is exothermic and the enthalpy change for the reaction (ΔHrxn) is negative.

Hence, ΔrH = -40.62 kJ/mole.

Hope this Helps!!!

You might be interested in
An atom has three shells with 3 electrons in the last shell. This atom could be.....
Oksana_A [137]
Since the total amount of valence electrons is 3, it is in group 13 in the periodic table..therefore, it is specified as Boron.✅
4 0
3 years ago
Helpl asap nowwww bc i dont understand
dimaraw [331]

Answer: kinetic energy

Explanation: kenitic energey is answer1 Awnser2 potentialand 3 is friction

6 0
3 years ago
Please show steps Thanks
Debora [2.8K]

Answer:

chuma ya ndoshi.............

Explanation:

.

kwenda ukalale .............

6 0
2 years ago
The rays produced in a cathode tube are
wel

Answer:

Electrons

Explanation:

Cathode rays carry electronic currents through the tube. Electrons were first discovered as the constituents of cathode rays. J.J. Thomson used the cathode ray tube to determine that atoms had small negatively charged particles inside of them, which he called “electrons.”

7 0
3 years ago
Read 2 more answers
The ____________________ is done first so that you know how you want to go about your ____________________.
N76 [4]
We need a photoooooooo
8 0
2 years ago
Read 2 more answers
Other questions:
  • Match the term with its description. Match Term Definition Chloroplast A) An organelle that contains chlorophyll and in which ph
    13·2 answers
  • Someone Help me please
    5·1 answer
  • Definition for outcome variable
    7·1 answer
  • In very early human history, complex sanitation systems were not needed because settlements were usually very small, like the vi
    13·1 answer
  • Athy online
    13·1 answer
  • What is the box notation for chlorine
    11·1 answer
  • Reduction occurs at which electrode?
    8·1 answer
  • Calculate the energy of a photon emitted when an electron in a hydrogen atom undergoes a transition from =3 to =1.
    15·1 answer
  • Calculate the molarity of 0.060 moles NaHCO3 in 1500. mL of solution
    14·1 answer
  • Which type of chemical reaction is represented by this equation
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!