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
ElenaW [278]
3 years ago
11

1 mol super cooled liquid water transformed to solid ice at -10 oC under 1 atm pressure.

Chemistry
1 answer:
Arada [10]3 years ago
4 0

Answer:

Explanation:

Given that:

number of moles of super cooled liquid water = 1

Melting enthalpy of ice = 6020 J/mol

Freezing point =0 °C = (0 + 273 K)= 273 K

The decrease in entropy of the system during freezing for 1 mol (i.e during transformation from liquid water to solid ice )  = - 6020 J/mol × 1 mol /273 K = -22.051 J/K

Entropy change during further cooling from 0 °C (273 K) to -10 °C (263 K)

\Delta \ S = \int\limits^{T_2}_{T_1}\dfrac{nC_p(s)dT}{T}

\Delta \ S = {nC_p(s)In \dfrac{T_2}{T_1}

\Delta \ S = {(1*37.7)In \dfrac{263}{273}

Δ S = -1.4 J/K

Total entropy change of the system = - 22.05 J/K - 1.4 J/K = - 23.45 J/K

Entropy change of universe = entropy change of the system+ entropy change of the surrounding

According to the second law of thermodynamics

Entropy change of universe  >0

SO,

Entropy change of the system + entropy change in the surrounding > 0

Entropy change in the surrounding > - entropy change of the system

Entropy change in the surrounding > - (- 23.53 J/K)

Entropy change in the surrounding > 23.53 J/K

b) Make some comments on entropy changes from the obtained data.

From the data obtained; we will realize that the entropy of the system decreases as cooling takes place when water is be convert to ice , randomness of these molecules reduces and as cooling proceeds , hence, entropy reduces more as well and the liberated heat will go into the surrounding due to this entropy of the surrounding increasing.

You might be interested in
Explain why it is important not to correct any gas from the first few seconds of the experiment​
Leno4ka [110]

Answer:

gu kha fuschhehdjdvdbeodbr

7 0
3 years ago
What do all the elements in one row of the periodic table have in common?
Hoochie [10]

Answer:

B

Explanation:

This is because the periodic table is designed this way.

5 0
3 years ago
Read 2 more answers
Help me help me help me
PilotLPTM [1.2K]

Answer:

i dont know i do this for points

Explanation:

4 0
2 years ago
How can scientists detect blood doping?
aev [14]

Answer:

There are typically three ways that it is accomplished: use of erythropoietin (EPO) or synthetic oxygen carriers and blood transfusions. While transfusions of large volumes of blood or use of EPO can be detected, microdosing EPO or transfusing smaller volumes of packed red blood cells is much harder to detect.

6 0
2 years ago
Read 2 more answers
a block of iron has the dimensions of 3.00 cm x 3.00 cm x 3.00 cm. it has a mass of 213 g. when placed in water, the block sinks
Art [367]

 When the block  of iron is  placed  in water  the volume of water that   is  displaced is  27.0  cm³


  <u><em> calculation</em></u>

The  volume water that is displaced is equal to volume of block  of the iron


volume of block of iron = length x width x height

   length= 3 cm

   width = 3  cm

 height = 3 cm

volume  is therefore = 3 cm  x  3 cm x  3  cm = 27  cm³   therefore the volume displaced  = 27 cm³  since the volume of water displaced  is equal to  volume of block.

3 0
3 years ago
Read 2 more answers
Other questions:
  • Select the correct answer.
    14·1 answer
  • ____________  was the first chemist to organize elements by atomic number
    9·1 answer
  • Draw the Lewis Structure for NI3.
    10·1 answer
  • PLEASE HELP!!!!!!!! WILL GIVE BRAINLY!!!!!!!!
    11·1 answer
  • In what type of reaction or process does heat flow into the system?
    8·2 answers
  • In your own words, describe what is the role or function of the neutron in the atom's nucleus
    15·2 answers
  • Fuels cell automobiles use__ gas as a fuel
    8·2 answers
  • Which of the following would dissolve in water?<br> CCl4<br> LiCl<br> CH4<br> PCl6
    6·2 answers
  • What is the speed of an electromagnetic wave that has a wavelength of 8.6 x 10-5 m?
    8·1 answer
  • What happens to the following system at equilibrium when it experiences an increase or a decrease in temperature?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!