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
What is the ground-state electron configuration of the sulfide ion s2− in condensed form?
SIZIF [17.4K]

S^{2-}: [Ar]

5 0
3 years ago
When discussing acids and bases any substance that accepts a patron by definition is considered an
vredina [299]

Brønsted-Lowry acid.

8 0
3 years ago
Sugar is...
Leya [2.2K]

Answer:

B. a type of carbohydrate

Explanation:

Sugar is a type of carbohydrate.

Hope it helped brainiest plz

5 0
3 years ago
1. What is the relationship between pressure and volume?
MariettaO [177]

Answer:

An increase in pressure would cause less volume and vice versa. They are inversely proportional.

Explanation:

This is due to Boyle's Law (and because an increase in pressure would increase the force on the container, however, if it's a closed container, it would burst)

<em>Feel free to mark it as brainliest :D</em>

5 0
3 years ago
Read 2 more answers
6.626 × 10⁻³⁴ × 7.08× 10¹⁴
PolarNik [594]

The answer is 4.69 x 10⁻¹⁹  I hope this helped!

3 0
3 years ago
Other questions:
  • The nutrition label on a bottle of cola reports that a 8.0 fl oz serving contains 25 g of sugar. How many kilograms of sugar are
    5·1 answer
  • If 56 J of heat is added to an aluminum can with a mass of 23.6 g , what is its temperature change? Specific heat capacity of al
    8·1 answer
  • An atom of aluminum (Al) has an atomic number of 13 and a mass number of 27. How many neutrons does it have? O A. 27 O B. 40 O C
    9·1 answer
  • Which of the following is an example of inertia?
    6·1 answer
  • Which of these characteristics differentiate electrons from protons and neutrons
    15·1 answer
  • Calculate the relative rate of effusion for the orange to blue spheres. The root-mean-square speed for the orange spheres is 565
    10·2 answers
  • In an isotope, which subatomic particle varies in number ?
    11·1 answer
  • Determine the molecular formula of a compound having an empirical formula of CH and an experimental molar mass of 78 g/mol. Expl
    7·1 answer
  • The greater the resistance, the less current there is for a given voltage.
    12·1 answer
  • What is an oxidizing agent?​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!