Answer:
pH = 2.03
Explanation:
The pH can be calculated using the following equation:
![pH = -log [H_{3}O^{+}]](https://tex.z-dn.net/?f=%20pH%20%3D%20-log%20%5BH_%7B3%7DO%5E%7B%2B%7D%5D%20)
(1)
The concentration of H₃O⁺ is calculated using the dissociation constant of the next reaction:
CH₃COOH + H₂O ⇄ CH₃COO⁻ + H₃O⁺
1.00 M
![K_{a} = \frac{[CH_{3}COO^{-}][H_{3}O^{+}]}{[CH_{3}COOH]}](https://tex.z-dn.net/?f=%20K_%7Ba%7D%20%3D%20%5Cfrac%7B%5BCH_%7B3%7DCOO%5E%7B-%7D%5D%5BH_%7B3%7DO%5E%7B%2B%7D%5D%7D%7B%5BCH_%7B3%7DCOOH%5D%7D%20)
Solving the above equation for H₃O⁺, we have:
![[H_{3}O^{+}] = \frac{Ka*[CH_{3}COOH]}{[CH_{3}COO^{-}]}](https://tex.z-dn.net/?f=%20%5BH_%7B3%7DO%5E%7B%2B%7D%5D%20%3D%20%5Cfrac%7BKa%2A%5BCH_%7B3%7DCOOH%5D%7D%7B%5BCH_%7B3%7DCOO%5E%7B-%7D%5D%7D%20)
(2)
The dissociation constant is equal to:
Now, by solving the equation of the solubility product for Herbigon, we can find [CH₃COO⁻]:
CH₃COOX ⇄ CH₃COO⁻ + X⁺
5.00x10⁻³ M
![K_{sp} = [CH_{3}COO^{-}][X^{+}]](https://tex.z-dn.net/?f=%20K_%7Bsp%7D%20%3D%20%5BCH_%7B3%7DCOO%5E%7B-%7D%5D%5BX%5E%7B%2B%7D%5D%20)
![[CH_{3}COO^{-}] = \frac{K_{sp}}{[X^{+}]} = \frac{9.40 \cdot 10^{-6}}{5.00 \cdot 10^{-3}} = 1.88 \cdot 10^{-3} M](https://tex.z-dn.net/?f=%5BCH_%7B3%7DCOO%5E%7B-%7D%5D%20%3D%20%5Cfrac%7BK_%7Bsp%7D%7D%7B%5BX%5E%7B%2B%7D%5D%7D%20%3D%20%5Cfrac%7B9.40%20%5Ccdot%2010%5E%7B-6%7D%7D%7B5.00%20%5Ccdot%2010%5E%7B-3%7D%7D%20%3D%201.88%20%5Ccdot%2010%5E%7B-3%7D%20M)
By entering the values of [CH₃COO⁻] and Ka, into equation (2) we can calculate [H₃O⁺]:
![[H_{3}O^{+}] = \frac{1.74 \cdot 10^{-5}*[1.00]}{[1.88 \cdot 10^{-3}]} = 9.26 \cdot 10^{-3} M](https://tex.z-dn.net/?f=%5BH_%7B3%7DO%5E%7B%2B%7D%5D%20%3D%20%5Cfrac%7B1.74%20%5Ccdot%2010%5E%7B-5%7D%2A%5B1.00%5D%7D%7B%5B1.88%20%5Ccdot%2010%5E%7B-3%7D%5D%7D%20%3D%209.26%20%5Ccdot%2010%5E%7B-3%7D%20M)
Hence, the pH is:
![pH = -log [H_{3}O^{+}] = -log [9.26 \cdot 10^{-3}] = 2.03](https://tex.z-dn.net/?f=%20pH%20%3D%20-log%20%5BH_%7B3%7DO%5E%7B%2B%7D%5D%20%3D%20-log%20%5B9.26%20%5Ccdot%2010%5E%7B-3%7D%5D%20%3D%202.03%20)
Therefore, the pH must be 2.03 to yield a solution in which the concentration of X⁺ is 5.00x10⁻³M.
I hope it helps you!
Answer: B!
Explanation: In the direction opposite of the direction of the applied force.There is no force in the other side being applied.
Answer:inform the lab instructor and get instructions
Explanation:
If you come across a chemical in the laboratory which has been wrongly labelled, do not be quick to dilute it or take any further action. The laboratory instructor who may have prepared the reagent himself or has better knowledge about the reagent should be contacted immediately so that he/she can give you instructions about what to do with the wrongly labelled reagent.
Answer:
It will be a pure substance (compound) because chemical composition of sugar crystals will be the same whether obtained from sugarcane or from beet root.
<h3>hope it's help you </h3><h3>plz mark as brain list ...!!</h3>
Methane CH
does not have ionic bonds. Because of the close value of electronegativity of the carbon and hydrogen atoms the electrons are shared forming covalent bonds.
