It conducts electricity when dissolved in water.
It is a liquid at room temperature.
It is a gas at room temperature.
It has a low melting point.
Answer:
1) The hydrogen-ion concentration is 0.001 M and pH of the solution is less than 7 which means that the solution is acidic.
2) The acid dissociation constant of a weak monoprotic acid is
.
Explanation:
1) Concentration of hydroxide ions =![[OH^-]=1\times 10^{-11}](https://tex.z-dn.net/?f=%5BOH%5E-%5D%3D1%5Ctimes%2010%5E%7B-11%7D)
The pOH of the solution:
![pOH=-\log[OH^-]](https://tex.z-dn.net/?f=pOH%3D-%5Clog%5BOH%5E-%5D)
![pOH=-\log[1\times 10^{-11}=11](https://tex.z-dn.net/?f=pOH%3D-%5Clog%5B1%5Ctimes%2010%5E%7B-11%7D%3D11)
pH + pOH = 14
pH = 14 - pOH = 14 - 11 = 3
The pH of the solution is given as:
![pH=-\log[H^+]](https://tex.z-dn.net/?f=pH%3D-%5Clog%5BH%5E%2B%5D)
![3=-\log[H^+]](https://tex.z-dn.net/?f=3%3D-%5Clog%5BH%5E%2B%5D)
![[H^+]=10^{-3} M=0.001 M](https://tex.z-dn.net/?f=%5BH%5E%2B%5D%3D10%5E%7B-3%7D%20M%3D0.001%20M)
The hydrogen-ion concentration is 0.001 M and pH of the solution is less than 7 which means that the solution is acidic.
2)
Dissociation on weak monoprotic weak acid is given by :
![HA\rightleftharpoons A^-+H^+](https://tex.z-dn.net/?f=HA%5Crightleftharpoons%20A%5E-%2BH%5E%2B)
Initially
0.5 M 0 0
At equilibrium
(0.5-x) x x
Given , hydrogen ions concentration = ![[H^+]=x=0.0001 M](https://tex.z-dn.net/?f=%5BH%5E%2B%5D%3Dx%3D0.0001%20M)
The expression of a dissociation constant
is given as:
![K_a=\frac{[A^-][H^+]}{[HA]}](https://tex.z-dn.net/?f=K_a%3D%5Cfrac%7B%5BA%5E-%5D%5BH%5E%2B%5D%7D%7B%5BHA%5D%7D)
![=\frac{x\times x}{(0.5-x)}=\frac{0.0001\times 0.0001 }{(0.5-0.0001)}](https://tex.z-dn.net/?f=%3D%5Cfrac%7Bx%5Ctimes%20x%7D%7B%280.5-x%29%7D%3D%5Cfrac%7B0.0001%5Ctimes%200.0001%20%7D%7B%280.5-0.0001%29%7D)
![K_a=2.0\times 10^{-8}](https://tex.z-dn.net/?f=K_a%3D2.0%5Ctimes%2010%5E%7B-8%7D)
The acid dissociation constant of a weak monoprotic acid is
.
Thermoplastics and thermosetting polymers Examples include: polyethylene (PS) and polyvinyl choline (PVC). Common thermoplastics range from 20,000 to 50,000 amu, while thermosets are assumed to have infinite molecular weight.
When u add the solution to the chemical's
The percentage yield of the new production technique is 82.8%
<h3>What is the percentage yield?</h3>
Production is the procedure by which finished products are obtained form the raw materials. The production process involves the passing of raw materials through a certain procedure that involves the use of certain machines and equipment to give us the required products.
We are told in the question that there are three shifts;
Shift 1 produces 4562 grams
Shift 2 produces 5783 grams
Shift 3 produces 5247 grams
Average production from the three shifts = 4562 grams + 5783 grams + 5247 grams/3 = 5197 grams
The theoretical average yield is = 7000 grams + 7000 grams + 7000 grams/3 = 7000 grams
Now the percentage yield = actual yield/ theoretical yield * 100/1
percentage yield = 5197 grams/7000 grams * 100/1
percentage yield = 82.8%
Learn more about percentage yield :brainly.com/question/27492865
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