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
stepan [7]
3 years ago
14

Despite not knowing mechanistic details of the adsorption of water onto silica gel, from the information provided, you should be

able to make an educated guess about the thermodynamic characteristics of the process. Predict the signs of ΔG, ΔH, and ΔS.
Chemistry
1 answer:
navik [9.2K]3 years ago
8 0

Answer:

G<0, spontanteous

H<0, from equation

S>0, gas to solid

Explanation:

The small bags of silica gel you often see in a new shoe box are placed there to control humidity. Despite its name, silica gel is a solid. It is a chemically inert, highly porous, amorphous form of SiO2. Water vapor readily adsorbs onto the surface of silica gel, so it acts as a desiccant. Despite not knowing mechanistic details of the adsorption of water onto silica gel, from the information provided, you should be able to make an educated guess about the thermodynamic characteristics of the process. Predict the signs of ΔG, ΔH, and ΔS.

G<0, spontanteous

H<0, from equation

S>0, gas to solid

You might be interested in
3. Describe como se comparan las fuerzas intermoleculares.
Dafna1 [17]

Answer:

Donde sea que vayas, yo iré

Sombras en la luz de la cámara

Y no quieres tomarlo con calma, así que no lo hagas

Sabes que eres mi favorito, ¿verdad?

Golpearte con algo de verdad

Eres como un sueño

Quiero creer

Golpearte con algo de verdad

Cuando estamos juntos

Ni siquiera puedo mentir

Tu y yo tenemos quimica

Tengo, tengo química

Tengo química

Siéntelo cuando estás cerca de mí

Y fuera de alcance

Y en el medio

Tenemos la la la, muchas buenas vibraciones

Tenemos la la la, tenemos la la la

Tu y yo tenemos quimica

Tengo, tengo química

Tengo química

En cualquier momento o lugar, no hay vergüenza

Tu tienes mi atencion ahora

¿Alguien puede montar mi ola de la misma manera?

Sabes de lo que estoy hablando

Golpearte con algo de verdad

Eres como un sueño

Quiero creer

Golpearte con algo de verdad

Cuando estamos juntos

Ni siquiera puedo mentir

Tu y yo tenemos quimica

Tengo, tengo química

Tengo química

Siéntelo cuando estás cerca de mí

Y fuera de alcance

Y en el medio

Tenemos la la la, muchas buenas vibraciones

Tenemos la la la, tenemos la la la

Tu y yo tenemos quimica

Tengo, tengo química

Tengo química

Tu y yo tenemos, tu y yo tenemos

Tú y yo tenemos química, tenemos, tenemos química

Tengo química

Siéntelo cuando estás cerca de mí

Y fuera de alcance

Y en el medio

Oh, tenemos química

Siéntelo cuando estás cerca de mí

Y fuera de alcance

Y en el medio

Ohh, tenemos la, la, la, tenemos muchas buenas vibraciones

Tenemos la, la, la, tenemos la, la, la

Tú y yo tenemos química, tenemos, tenemos química

Tengo química

Oh, no, oh, si

Oh no no no

Oh, si lo hacemos

Si

Porque tu y yo tenemos

7 0
3 years ago
The matter through which waves travel is called a/an​
sweet [91]

Answer:

A medium.

<h3>Explanation:</h3>

It's the material the wave is travelling through.

5 0
3 years ago
Which contains elements with similar properties in the periodic table? A.) a period B.) a column C.) a row
zysi [14]

b............................................

3 0
3 years ago
Read 2 more answers
Picture has the question
xenn [34]

Answer:I believe it is 5

Explanation:

8 0
3 years ago
Read 2 more answers
An analytical chemist is titrating of a solution of propionic acid with a solution of 224.9 ml of a 0.6100M solution of propioni
Svetllana [295]

<u>Answer:</u> The pH of acid solution is 4.58

<u>Explanation:</u>

To calculate the number of moles for given molarity, we use the equation:

\text{Molarity of the solution}=\frac{\text{Moles of solute}\times 1000}{\text{Volume of solution (in mL)}}    .....(1)

  • <u>For KOH:</u>

Molarity of KOH solution = 1.1000 M

Volume of solution = 41.04 mL

Putting values in equation 1, we get:

1.1000M=\frac{\text{Moles of KOH}\times 1000}{41.04}\\\\\text{Moles of KOH}=\frac{1.1000\times 41.04}{1000}=0.04514mol

  • <u>For propanoic acid:</u>

Molarity of propanoic acid solution = 0.6100 M

Volume of solution = 224.9 mL

Putting values in equation 1, we get:

0.6100M=\frac{\text{Moles of propanoic acid}\times 1000}{224.9}\\\\\text{Moles of propanoic acid}=\frac{0.6100\times 224.9}{1000}=0.1372mol

The chemical reaction for propanoic acid and KOH follows the equation:

                 C_2H_5COOH+KOH\rightarrow C_2H_5COOK+H_2O

<u>Initial:</u>          0.1372         0.04514  

<u>Final:</u>           0.09206          -                0.04514

Total volume of solution = [224.9 + 41.04] mL = 265.94 mL = 0.26594 L     (Conversion factor:  1 L = 1000 mL)

To calculate the pH of acidic buffer, we use the equation given by Henderson Hasselbalch:

pH=pK_a+\log(\frac{[\text{salt}]}{[acid]})

pH=pK_a+\log(\frac{[C_2H_5COOK]}{[C_2H_5COOH]})

We are given:  

pK_a = negative logarithm of acid dissociation constant of propanoic acid = 4.89

[C_2H_5COOK]=\frac{0.04514}{0.26594}

[C_2H_5COOH]=\frac{0.09206}{0.26594}

pH = ?  

Putting values in above equation, we get:

pH=4.89+\log(\frac{(0.04514/0.26594)}{(0.09206/0.26594)})\\\\pH=4.58

Hence, the pH of acid solution is 4.58

7 0
3 years ago
Other questions:
  • Fter a radioactive atom decays, it is the same element that it was before with no measurable change in mass. Which kind of decay
    8·2 answers
  • A sample of a gas originally at 29 °c and 1.25 atm pressure in a 3.0 l container is allowed to contract until the volume is 2.2
    8·1 answer
  • 2,2-dimethyl-4-propyloctane has how many secondary carbons? view available hint(s) 2,2-dimethyl-4-propyloctane has how many seco
    8·1 answer
  • Match each word to it's correct meaning.
    11·1 answer
  • In the reaction HCl + NaOH → NaCl (aq) + H2O , if 45.0 milliliters of a 2.0 M HCl react in an excess of NaOH, how many grams of
    7·1 answer
  • What is the chemical name of the compound. Cu2CO3
    13·1 answer
  • A certain hybrid car has a mileage rating of 47 miles per gallon. If the car makes a trip of 279 miles, how many gallons of gaso
    15·2 answers
  • If element x has 20 protons, how many electrons does it have
    10·1 answer
  • A golf ball has more mass than a tennis ball because it ____.
    14·1 answer
  • If you diluted 120 mL of 1,049 M NaCl to 1,920 mL, what would
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!