Question 1 in section B is physical
First question. Applying ideal gas equation PV=nRT, P= 101.3 x 10³Pa = 1atm. therefore, 1 x 260 x 10^-3 = n x 0.082 x 294.( Temperature in kelvin=273+21). n = 0.01 moles. Volume of gas at STP= n x 22.4 = 0.01x22.4 = 0.224L. Hope this helps
Answer:
578.04 °C
Explanation:
The temperature is given in Kelvin which has value = 304.89 K
Kelvin and Celsius are both units of the temperature which can be incontrovertible.
The conversion of T(K) to T( °C) is shown below:
T( °C) = T(K) - 273.15
Given that = T(K) = 304.89
So,
T = (304.89 + 273.15) °C = 578.04 °C
<u>The temperature in degrees Celsius is 578.04 °C . </u>
Answer:
The value of equilibrium constant is 29.45.
Explanation:
Moles of hydrogen gas = 2.00 mol
Concentration of hydrogen gas =![[H_2]= \frac{2.00 mol}{1.00 L}=2.00 M](https://tex.z-dn.net/?f=%5BH_2%5D%3D%20%5Cfrac%7B2.00%20mol%7D%7B1.00%20L%7D%3D2.00%20M)
Moles of iodine gas = 1.00 mol
Concentration of iodine gas =![[I_2]= \frac{I.00 mol}{1.00 L}=1.00 M](https://tex.z-dn.net/?f=%5BI_2%5D%3D%20%5Cfrac%7BI.00%20mol%7D%7B1.00%20L%7D%3D1.00%20M)
![H2(g) + I2(g)\rightleftharpoons 2 HI(g)](https://tex.z-dn.net/?f=H2%28g%29%20%2B%20I2%28g%29%5Crightleftharpoons%202%20HI%28g%29)
initially
2.00 M 1.00 M 1.00 M
At equilibrium:
(2.00-x/2) (1.00-x/2) x
Moles of HI at equilibrium = 1.80 M
Concentration of HI at equilibrium =![[HI]=\frac{1.80 mol}{1.00L} = 1.80M= x](https://tex.z-dn.net/?f=%5BHI%5D%3D%5Cfrac%7B1.80%20mol%7D%7B1.00L%7D%20%3D%201.80M%3D%20x)
The expression of an equilibrium constant is given by ;
![K_c=\frac{[HI]^2}{[H_2][I_2]}](https://tex.z-dn.net/?f=K_c%3D%5Cfrac%7B%5BHI%5D%5E2%7D%7B%5BH_2%5D%5BI_2%5D%7D)
![K_c=\frac{x^2}{(2.00-\frac{x}{2})(1.00-\frac{x}{2})}](https://tex.z-dn.net/?f=K_c%3D%5Cfrac%7Bx%5E2%7D%7B%282.00-%5Cfrac%7Bx%7D%7B2%7D%29%281.00-%5Cfrac%7Bx%7D%7B2%7D%29%7D)
Putting x equal to 1.80 M.
![K_c=\frac{(1.80)^2}{(2.00-\frac{1.80}{2})(1.00-\frac{1.80}{2})}=29.45](https://tex.z-dn.net/?f=K_c%3D%5Cfrac%7B%281.80%29%5E2%7D%7B%282.00-%5Cfrac%7B1.80%7D%7B2%7D%29%281.00-%5Cfrac%7B1.80%7D%7B2%7D%29%7D%3D29.45)
The value of equilibrium constant is 29.45.
Explanation:
One pound is equal to 16 ounces. One pound of jelly beans cost $2.88p