Which of the following elements is only made in laboratories?sbcmtetb
1 answer:
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<u>Answer:</u> The value of for the given acid is
<u>Explanation:</u>
To calculate the molarity of solution, we use the equation:
Initial mass of weak monoprotic acid = 1.00 g
Molar mass of weak monoprotic acid = 180 g/mol
Volume of solution = 300 mL
Putting values in above equation, we get:
To calculate the hydrogen ion concentration for given pH of the solution, we use the equation:
We are given:
pH = 2.62
Putting values in above equation, we get:
The chemical equation for the dissociation of weak monoprotic acid (HA) follows:
<u>Initial:</u> 0.0185
<u>At eqllm:</u> 0.0185-x x x
Evaluating the value of 'x'
So, equilibrium concentration of HA = (0.0185 - 0.0024) = 0.0161 M
Equilibrium concentration of = x = 0.0024 M
The expression of for above equation follows:
Putting values in above equation, we get:
Hence, the value of for the given acid is