B) 0.86 s or the reaction -CO₂) C+1/2020 Cay+ O₂ C) 0.69 s¹ AG=?? AG-454.4 kJ AG=-257.2 kJ C) 197.2 kJ B)-265.8 kJ D) 651.6 kJ ample of nitrogen N: is 9 L at 31°C and 732 torr. What volume will it occupy at ST C) 6.90 L B) 7.18 L D) 7.78 L D) 0.32 s¹ owing pure substances exhibits hydrogen bonding? B) H₂S C) CH₁ gar solution has a H₂O concentration of 0.0185 M W D) H₂O
Ideal and Real Gases
Ideal gases obey conditions of the general gas laws under all states of pressure and temperature. Ideal gases are also named perfect gases. The attributes of ideal gases are as follows,
Gas Laws
Gas laws describe the ways in which volume, temperature, pressure, and other conditions correlate when matter is in a gaseous state. The very first observations about the physical properties of gases was made by Robert Boyle in 1662. Later discoveries were made by Charles, Gay-Lussac, Avogadro, and others. Eventually, these observations were combined to produce the ideal gas law.
Gaseous State
It is well known that matter exists in different forms in our surroundings. There are five known states of matter, such as solids, gases, liquids, plasma and Bose-Einstein condensate. The last two are known newly in the recent days. Thus, the detailed forms of matter studied are solids, gases and liquids. The best example of a substance that is present in different states is water. It is solid ice, gaseous vapor or steam and liquid water depending on the temperature and pressure conditions. This is due to the difference in the intermolecular forces and distances. The occurrence of three different phases is due to the difference in the two major forces, the force which tends to tightly hold molecules i.e., forces of attraction and the disruptive forces obtained from the thermal energy of molecules.
![Hint: (molar mass of H-1, N-14g/mol), (R-0.0821 L.atm/K.mol), (The specific heat of water is 4.184J/g. C)
.
1) Estimate the temperature where AG=0 for the following reaction: (Given: AH--195 kJ and
AS-284.5 J/K) CAUTION: Beware of units.NH3(g) + HCl(g)->NH4Cl(s)
A) 685 K
B) 467 K
C) 582 K
D) 634 K
2) Consider the reaction represented by the equation: N₂(g) + 3H₂(g) <-> 2NH3(g) Calculate the
equilibrium pressures at a certain temperature: PNH,-3.7 x 10 atm, PN-8.9x10 atm, PH:-2.9x 10 atm
A) 6.3x10*
B) 2.9x104
C) 5.3x10
D) 4.9 x10
3) Consider the following reaction:
2 N₂O(g)
If the half-life for the reaction is 0.810 s, the rate constant is:
A) 1.1 s¹¹
B) 0.86 s¹
4) Calculate AG for the reaction
->
COⓇ
CO₂(g)
CO
C) + 1/202)
Ca) + O₂
+1/202- CO₂(g)
A) 523 kJ
2 NO(g) + O₂(g); rate=1
C) 0.69 s¹
AG=??
AG°-454.4 kJ
AG=-257.2 kJ
C) 197.2 kJ
k[N₂0]
B)-265.8 kJ
D) 651.6 kJ
5) The volume of a sample of nitrogen N₂ is 9 L at 31°C and 732 torr. What volume will it occupy at STP?
A) 6.59 L
B) 7.18 L
C) 6.90 L
D) 7.78 L
6)
Which of the following pure substances exhibits hydrogen bonding?
A) HCI
B) H₂S
C) CH₂
D) 0.32 s¹
D) H₂O
7)
A particular vinegar solution has a H₂O* concentration of 0.0185 M. What is the pOH of the solution?
A) 10.7
B) 17.3
C) 12.3
D) 15.8
8)
What mass of ethylene glycol (M.W. = 62.1 g/mol) antifreeze must be added to 8.0 liters of water to
produce a solution that freezes at -23.3 C degrees. Density of water is 1 g/ml and Kr-186° C/m.
A) 3.41 g
B) 6.22 Kg
C) 7.81 kg
=
D) 0.78 kg
11) The OH concentration in a 0.09M of Ca(OH)2 solution is
A) 0.0075 M
B) 0.18 M
9) How much heat is required to raise the temperature of 1.5 g of water from 25°C to 27°C?
A) 12.55 kJ
B) 6.27 kJ
C) 1.55 kJ
D) 40.5 kJ
10) Calculate the osmotic pressure associated with 90.0 g of an enzyme of molecular weight 98,000 g/mol
dissolved in 2900 mL of benzene at 30.0 °C.
A) 5.99 torr
B) 1.96 torr
C) 0.484 torr
D) 2.48 torr
C) 1.3x10-12 M
D) 1x107 M
12) A solution of 7.00 MHCHO2 is 0.57% ionized in water. Calculate the Ka value for the acid (HCHO₂).
A) 2.5x10-³
B) 0.2x10-³
C) 2.3x104
D) 0.23](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F48079d7c-7248-4f29-b2fc-02e5764ca6aa%2Fb6de5dda-8a3d-443e-ad52-7657d05404c1%2F9ye03w_processed.jpeg&w=3840&q=75)
Ideal gas equation is a equation which obese gas laws under all conditions of temperature and pressure.
Given Volume of sample = 9 L
Given pressure of sample = 732 torr
Given temperature of sample = 31° C
We have to calculate volume at STP
Step by step
Solved in 3 steps with 1 images
