I belive the answer to your question would be 0
Answer:
[C] = 0.4248M
Explanation:
A + B ⇄ 2C
C(i) 1.68M 1.68M 0.00
ΔC -x -x +2x
C(eq) 1.68-x 1.68-x 2x
Keq = [C]²/[A][B] = (2x)²/(1.68 - x)²= 8.98 x 10⁻²
Take SqrRt of both sides => √(2x)²/(1.68 - x)² = √8.98 x 10⁻²
=> 2x/1.68 - x = 0.2895
=> 2x = 0.2895(1.68 - x)
=> 2x = 0.4863 - 0.2895x
=> 2x + 0.2895x = 0.4863
=> 2.2895x = 0.4863
=> x = 0.4863/2.2895 = 0.2124
[C] = 2x = 2(0.2124)M = 0.4248M in 'C'
Answer:
Number of Significant Figures: 4
The Significant Figures are 5 4 3 9
Explanation:
<u>Answer:</u> The correct answer is Option A.
<u>Explanation:</u>
pH is defined as negative logarithm of hydronium ion concentration. It is basically defined as the power of hydrogen ions that are present in a solution.
Mathematically,
![pH=-\log[H_3O^+]](https://tex.z-dn.net/?f=pH%3D-%5Clog%5BH_3O%5E%2B%5D)
pH of the solution = 9.11
Putting values in above equation, we get:
![9.11=-\log[H_3O^+]](https://tex.z-dn.net/?f=9.11%3D-%5Clog%5BH_3O%5E%2B%5D)
![[H_3O^+]=antilog(-9.11)](https://tex.z-dn.net/?f=%5BH_3O%5E%2B%5D%3Dantilog%28-9.11%29)
![[H_3O^+]=7.8\times 10^{-10}](https://tex.z-dn.net/?f=%5BH_3O%5E%2B%5D%3D7.8%5Ctimes%2010%5E%7B-10%7D)
Hence, the correct answer is Option A.
