What part of the scientific method involves constructing a tentative and testable explanation based on observations and research
2 answers:
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Answer: The equivalent mass of the acid is 83.16 grams
Explanation:
To calculate the number of moles for given molarity, we use the equation:
Molarity of solution = 0.1165 M
Volume of solution = 24.68 mL = 0.02468 L
Putting values in equation 1, we get:
( as acidity of NaOH is 1)
For end point: gram equivalents of acid = gram equivalents of base =
Mass of acid=
Thus equivalent mass of the acid is 83.16 grams
Answer : The equilibrium concentration of will be, (C)
Explanation : Given,
Equilibrium constant = 14.5
Concentration of at equilibrium = 0.15 M
Concentration of at equilibrium = 0.36 M
The balanced equilibrium reaction is,
The expression of equilibrium constant for the reaction will be:
Now put all the values in this expression, we get:
Therefore, the equilibrium concentration of will be, (C)