if gas is sealed container has a pressure of 50 kpa at 300k, what will the pressure be if the temperature rises to 360 k

Help please ? Thank you

olasank [31]

Answer:

40J

Explanation:

I think about that why I don't know what is the answer

3 0

3 years ago

For the gaseous reaction of carbon monoxide and chlorine to form phosgene (COCL2)

Natasha_Volkova [10]

This is an incomplete question, here is a complete question.

For the gaseous reaction of carbon monoxide and chlorine to form phosgene (COCl₂)

Perform the following calculations:

A) Calculate ΔS at 298 K (ΔH= -220 kJ/mol and ΔG= -206 kJ/mol

B) Assuming that ΔS and ΔH change little with temperature, calculate ΔG at 450 K.

Answer :

(a) The value of ΔS at 298 K is, -0.0469 kJ/mol.K

(b) The value of ΔG at 450 K is, -199 kJ/mol

Explanation :

(a) According to Gibb's equation:

$\Delta G=\Delta H-T\Delta S$

$\Delta G$ = Gibbs free energy = -206 kJ/mol

$\Delta H$ = enthalpy change = -220 kJ/mol

$\Delta S$ = entropy change = ?

T = temperature in Kelvin = 298 K

Now put all the given values in the above formula, we get:

$-206kJ/mol=-220kJ/mol-298K\times \Delta S$

$\Delta S=-0.0469kJ/mol.K$

Thus, the value of ΔS at 298 K is, -0.0469 kJ/mol.K

(b) According to Gibb's equation:

$\Delta G=\Delta H-T\Delta S$

$\Delta G$ = Gibbs free energy = ?

$\Delta H$ = enthalpy change = -220 kJ/mol

$\Delta S$ = entropy change = -0.0469 kJ/mol.K

T = temperature in Kelvin = 450 K

Now put all the given values in the above formula, we get:

$\Delta G=-220kJ/mol-450K\times -0.0469 kJ/mol.K$

$\Delta G=-198.895kJ/mol\approx -199kJ/mol$

Thus, the value of ΔG at 450 K is, -199 kJ/mol

6 0

2 years ago

1) When chromium chloride, CrCl2, is dissolved in water, the temperature of the water decreases. a) Is the heat of solution exot

Mandarinka [93]

Answer:

Explanation: It has been given that the temperature of the water decreases when chromium chloride is dissolved in water. Thus fall in the temperature explains the fact that the bond energies of the reactants have more energy rather than the products.

a) Thus the heat of the solution is endothermic in nature as more energy is needed to break the reactant molecules.

b) The combined ionic bond strength of CrCl2 and inter molecular forces between water molecules must be stronger than the attractive forces between the water molecules and chromium and chloride ions as the reaction is endothermic in nature thus more energy would be required to break the bonds between the reactants hence making them more stronger.

3 0

2 years ago

Consider the reaction 3CH4(g)→C3H8(g)+2H2(g).

padilas [110]

From the calculations performed, the free energy change for the reaction is 72 kJ/mol.

<h3>What is the equilibrium constant?</h3>

The equilibrium constant is a value that shows the extent to which reactants have been converted to products.

Given that the equation of the reaction is;

3CH4(g)→C3H8(g)+2H2(g)

Then;

PC3H8 = 0.013 atm

PH2 = 2.3×10−2 atm

PCH4 = 41 atm

Now;

ΔG = ΔG° + RTlnQ

ΔG°reaction = ΔG°products - ΔG°reactants

ΔG°reaction = [( -23.4) +2(0)] - 3(-50.8)

ΔG°reaction = 129 kJ/mol

Q = PC3H8 * PH2^2/PCH4^3

Q = 0.013 * (2.3×10−2)^2/( 41)^3

Q = 6.877 * 10^-6/68921

Q= 9.9* 10^-11

Hence;

ΔG = 129 * 10^3 + [8.314 * 298 * (ln 9.9* 10^-11 )]

ΔG = 129 * 10^3 - 57073

ΔG = 72 kJ/mol

Learn more about free energy change: brainly.com/question/14143095

6 0

2 years ago

20)

anyanavicka [17]

Answer:

D

Explanation:

7 0

3 years ago