Answer:
- option B
- option A
Explanation:
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Answer:
Concentration of product at equilibrium ;
![[H^+]=0.0000229 M](https://tex.z-dn.net/?f=%5BH%5E%2B%5D%3D0.0000229%20M)
![[CN^-]=0.0000229 M](https://tex.z-dn.net/?f=%5BCN%5E-%5D%3D0.0000229%20M)
Explanation:
![HCN(aq)\rightleftharpoons H^+(aq) + CN^-(aq)](https://tex.z-dn.net/?f=HCN%28aq%29%5Crightleftharpoons%20H%5E%2B%28aq%29%20%2B%20CN%5E-%28aq%29)
initially
0.85 M 0 0
(0.85-x)M x x
The equilibrium constant of reaction = ![K_c= 6.17\times 10^{-10}](https://tex.z-dn.net/?f=K_c%3D%206.17%5Ctimes%2010%5E%7B-10%7D)
The expression of an equilibrium cannot can be written as:
![K_c=\frac{[H^+][CN^-]}{[HCN]}](https://tex.z-dn.net/?f=K_c%3D%5Cfrac%7B%5BH%5E%2B%5D%5BCN%5E-%5D%7D%7B%5BHCN%5D%7D)
![6.17\times 10^{-10}=\frac{x\times x}{(0.85-x)}](https://tex.z-dn.net/?f=6.17%5Ctimes%2010%5E%7B-10%7D%3D%5Cfrac%7Bx%5Ctimes%20x%7D%7B%280.85-x%29%7D)
Solving for x:
x = 0.0000229
Concentration of product at equilibrium ;
![[H^+]=0.0000229 M](https://tex.z-dn.net/?f=%5BH%5E%2B%5D%3D0.0000229%20M)
![[CN^-]=0.0000229 M](https://tex.z-dn.net/?f=%5BCN%5E-%5D%3D0.0000229%20M)
Answer:
B
Explanation:
living things are not required to move
Explanation:
The standard entropy change of a reaction has a positive value. This reaction results in an increase in entropy.
Positive entropy means the system has increased its degree of disorderness.
Answer:
I believe the answer isT 2.
Explanation:
he formula for IMA of a first-class lever is effort-distance/resistance-distance.