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yanalaym [24]
3 years ago
11

23 When the pH of a buffer is equal to its pKa, what is the amount of dissociation that has occurred?

Chemistry
1 answer:
Gemiola [76]3 years ago
3 0
The correct answer is 50%.
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What is the molarity of 2.00 L of a solution that contains 14.6 g NaCl?
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Answer: The molarity of the solution is 0.125 M

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

Molarity=\frac{n}{V_s}

where,

n = moles of solute

V_s = volume of solution in L

moles of NaCl = \frac{\text {given mass}}{\text {Molar mass}}=\frac{14.6g}{58.5g/mol}=0.250mol

Now put all the given values in the formula of molality, we get

Molarity=\frac{0.250mol}{2.00L}=0.125M

Therefore, the molarity of the solution is 0.125 M

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During an experiment a thermometer was placed in a beaker containing hydrogen peroxide. The following observations were recorded
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What is the approximate mass of one mole of oxygen gas (O2)?
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