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
Anna35 [415]
3 years ago
7

What is the change in enthalpy for the single replacement reaction between solid zinc and Cs2SO4 in solution to produce cesium a

nd ZnSO4? Zn + Cs2SO4 → 2Cs + ZnSO4 Given: `"Cs"_2"SO"_4(aq): DeltaH_f °= –1,400 "kJ"` `"ZnSO"_4(aq): DeltaH_f °= –1,063 "kJ"`
Chemistry
1 answer:
Digiron [165]3 years ago
4 0

The change in enthalpy refers to the amount of heat absorbed or heat evolved in a reaction which is carried out at constant pressure.

The change in enthalpy of a reaction is equal to the sum of formation of products minus sum of formation of reactants. It is denoted by \Delta H.

The given reaction is:

Zn + Cs_{2}SO_{4} \rightarrow 2Cs + ZnSO_{4}

\Delta H = \Delta H_{f}^{0}(products))-\Delta H_{f}^{0}(reactants))

Substitute the given values \Delta H_{f}^{0}(products)  and \Delta H_{f}^{0}(reactants) in above formula, we get

\Delta H = -1,063 kJ -(-1,400 kJ)

= + 337 kJ

Thus, change in enthalpy for the single replacement reaction is + 337 kJ


You might be interested in
If a 1.00 mL sample of the reaction mixture for the equilibrium constant experiment required 32.40 mL of 0.258 M NaOH to titrate
andrey2020 [161]

Answer:

The concentration of acetic acid is 8.36 M

Explanation:

Step 1: Data given

Volume of acetic acid = 1.00 mL = 0.001 L

Volume of NaOH = 32.40 mL = 0.03240 L

Molarity of NaOH = 0.258 M

Step 2: The balanced equation

CH3COOH + NaOH → CH3COONa + H2O

Step 3: Calculate the concentration of the acetic acid

b*Ca*Va = a*Cb*Vb

⇒with b = the coefficient of NaOH = 1

⇒with Ca = the concentration of CH3COOH = TO BE DETERMINED

⇒with Va = the volume of CH3COOH = 1.00 mL = 0.001L

⇒with a = the coefficient of CH3COOH = 1

⇒with Cb = the concentration of NaOH = 0.258 M

⇒with Vb = the volume of NaOH = 32.40 mL = 0.03240 L

Ca * 0.001 L = 0.258 * 0.03240

Ca = 8.36 M

The concentration of acetic acid is 8.36 M

6 0
3 years ago
Elements consist of tiny particles called
Nutka1998 [239]
The answer is atoms good luck
4 0
3 years ago
Quincy wants to see a real example of rock weathering. Where would be the best place for him to go? A. up on the roof of his hou
zhannawk [14.2K]

Answer:

Option (D)

Explanation:

Weathering is usually defined as the disintegration of rocks at the surface of the earth. This break down of rocks is mainly caused by the geological processes that occur on the earth's surface. This process results in the formation of sediments that are transported and deposited in a new environment.

This weathering process primarily takes place in three different ways such as-

  • Physical weathering- Here, the rocks are broken down by the physical agents such as wind, water, ice.
  • Chemical weathering- Here the rocks are broken down when interacts with the chemical containing water.
  • Biological weathering- here, the rocks are broken down due to the activities done by organisms such as plants and animals.

In the given condition, Quincy can see a real example of rock weathering in the high mountainous region, as in the mountainous region the rocks are frequently weathered and eroded by the agents such as wind, water, and ice.

Thus, the correct answer is option (D).

4 0
3 years ago
Which property determines an atom's ability to attract electrons shared in a chemical bond?
ASHA 777 [7]
It is electronegativity.
4 0
3 years ago
15 points!
Alex_Xolod [135]

Answer:

C: It is the difference between the total kinetic and potential energy in a system.

Explanation:

6 0
3 years ago
Other questions:
  • The transfer of energy from place to place or particle by direct contact is what
    8·1 answer
  • Which element has atoms that can form halide atoms?
    7·1 answer
  • Ammonia (NH3) boils at -33∘C; at this temperature it has a density of 0.81 g/cm3. The enthalpy of formation of NH3(g) is -46.2 k
    11·1 answer
  • How many grams of hydrogen gas would be needed to form 8.0 grams of water? H2+O2=H2O
    5·1 answer
  • Which statement describes the valence electrons in metallic bonds? a)They are shared equally between two atoms. b)They are share
    7·2 answers
  • If a parent cell has 23 chromosomes and reproduces asexually through mitosis,how many chromosomes will each of its daughter cell
    7·1 answer
  • Which of the following could be a benefit of climate change?
    15·1 answer
  • Which two changes in state are most represented in water cycle
    12·1 answer
  • How can radioisotopes help in promoting clean technology in the mitigation of the effect of climate change? What are the challen
    11·1 answer
  • Calculate the pH of a solution with an H+ ion concentration of 9.36 x 10-3 M ?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!