Answer:
The dissociation constant of phenol from given information is 
.
Explanation:
The measured pH of the solution = 5.153
Initially c
At eq'm c-x x x
The expression of dissociation constant is given as:
![K_a=\frac{[C_6H_5O^-][H^+]}{[C_6H_5OOH]}](https://tex.z-dn.net/?f=K_a%3D%5Cfrac%7B%5BC_6H_5O%5E-%5D%5BH%5E%2B%5D%7D%7B%5BC_6H_5OOH%5D%7D)
Concentration of phenoxide ions and hydrogen ions are equal to x.
![pH=-\log[x]](https://tex.z-dn.net/?f=pH%3D-%5Clog%5Bx%5D)
![5.153=-\log[x]](https://tex.z-dn.net/?f=5.153%3D-%5Clog%5Bx%5D)
The dissociation constant of phenol from given information is .
I'm not sure but I think it is C. CrO3
Answer:
Explanation:
The law of multiple proportions states that if two elements X and Y combine together to form more than one compound, then the several masses of X which chemically combine with a fixed mass of Y is in simple ratio.T
FIRST CASE ;
- Molar mass of Nitrogen gas = 28 g/mol
- Number of moles of Nitrogen gas = Mass/molar mass = 3.50/28 = 0.125 moles
- Number of moles of Oxygen gas = Mass/molar mass = 2.00/32 = 0.0625 moles
- Hence the ratio of number of moles of N2 to O2 will be 0.1295 : 0.0625 or 2:1
- Similarly for the SECOND CASE ;
- Molar mass of Nitrogen gas = 28 g/mol
- Number of moles of Nitrogen gas = Mass/molar mass = 0.875/28 = 0.03125 moles
- Number of moles of Oxygen gas = Mass/molar mass = 1/32 = 0.03125 moles
- Hence the ratio of number of moles of N2 to O2 will be 0.03125 : 0.03125 or 1:1
Answer:
b is the answer because ionic bonds are weaker than covalent forces
Answer:
Silicon Tetrachloride:Explanation:
Silicon tetrachloride has the formula SiCl4. It is a covalent compound, which means that electrons are shared between the silicon atom and the chlorine atoms. The bond angles between the chlorine atoms and the silicon depend on the molecule's shape.
