Answer:
D
Explanation:
depending on the solid the shape will not change.
Some things that can indicate a chemical change are change of odor, change of color, change in temperature or energy, such as the production or loss of heat. An example could be the rusting of metal, there would be a color change of going from a shiny silver to a dirty, splotchy red color. Some things that indicate a physical change are change of appearance like change of shape, etc. It can also be like a change between a solid to liquid to gas. For example, the cutting of a piece of paper.
<u>Answer:</u> The reaction proceeds in the forward direction
<u>Explanation:</u>
For the given chemical equation:
![2NO(g)+Cl_2(g)\rightleftharpoons 2NOCl(g)](https://tex.z-dn.net/?f=2NO%28g%29%2BCl_2%28g%29%5Crightleftharpoons%202NOCl%28g%29)
Relation of
is given by the formula:
![K_p=K_c(RT)^{\Delta n_g}](https://tex.z-dn.net/?f=K_p%3DK_c%28RT%29%5E%7B%5CDelta%20n_g%7D)
where,
= equilibrium constant in terms of partial pressure = ?
= equilibrium constant in terms of concentration = ![6.5\times 10^4](https://tex.z-dn.net/?f=6.5%5Ctimes%2010%5E4)
R = Gas constant = ![0.0821\text{ L atm }mol^{-1}K^{-1}](https://tex.z-dn.net/?f=0.0821%5Ctext%7B%20L%20atm%20%7Dmol%5E%7B-1%7DK%5E%7B-1%7D)
T = temperature = ![35^oC=[35+273]K=308K](https://tex.z-dn.net/?f=35%5EoC%3D%5B35%2B273%5DK%3D308K)
= change in number of moles of gas particles = ![n_{products}-n_{reactants}=2-3=-1](https://tex.z-dn.net/?f=n_%7Bproducts%7D-n_%7Breactants%7D%3D2-3%3D-1)
Putting values in above equation, we get:
![K_p=6.5\times 10^4\times (0.0821\times 500)^{-1}\\\\K_p=1583.43](https://tex.z-dn.net/?f=K_p%3D6.5%5Ctimes%2010%5E4%5Ctimes%20%280.0821%5Ctimes%20500%29%5E%7B-1%7D%5C%5C%5C%5CK_p%3D1583.43)
is the constant of a certain reaction at equilibrium while
is the quotient of activities of products and reactants at any stage other than equilibrium of a reaction.
The expression of
for above equation follows:
![Q_p=\frac{(p_{NOCl})^2}{p_{Cl_2}\times (p_{NO})^2}](https://tex.z-dn.net/?f=Q_p%3D%5Cfrac%7B%28p_%7BNOCl%7D%29%5E2%7D%7Bp_%7BCl_2%7D%5Ctimes%20%28p_%7BNO%7D%29%5E2%7D)
We are given:
![p_{NOCl}=1.76atm](https://tex.z-dn.net/?f=p_%7BNOCl%7D%3D1.76atm)
![p_{NO}=1.01atm](https://tex.z-dn.net/?f=p_%7BNO%7D%3D1.01atm)
![p_{Cl_2}=0.42atm](https://tex.z-dn.net/?f=p_%7BCl_2%7D%3D0.42atm)
Putting values in above equation, we get:
![Q_p=\frac{(1.76)^2}{0.42\times (1.01)^2}=7.23](https://tex.z-dn.net/?f=Q_p%3D%5Cfrac%7B%281.76%29%5E2%7D%7B0.42%5Ctimes%20%281.01%29%5E2%7D%3D7.23)
We are given:
![K_p=1583.43](https://tex.z-dn.net/?f=K_p%3D1583.43)
There are 3 conditions:
- When
; the reaction is product favored. - When
; the reaction is reactant favored. - When
; the reaction is in equilibrium
As,
, the reaction will be favoring product side.
Hence, the reaction proceeds in the forward direction
Answer: Neutron matter is equivalent to a chemical element with atomic number 0, which is to say that it is equivalent to a species of atoms having no protons in their atomic nuclei. Neutron matter decays quickly into hydrogen. Neutron matter has no electronic structure on account of its total lack of electrons.
Explanation: