3 years ago

NaOH is a strong base. Which two ions do you expect to find in a solution of NaOH?

Chemistry

1 answer:

Elena L [17]3 years ago

5 0

NaOH will dissociate as Na+ and OH- in the solution.

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The origin is what makes it change

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3 years ago

What population would be hurt if the bear population was to increase

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Fish would be hurt because that’s what bears mostly eat

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3 years ago

Be sure to answer all parts. Calculate the pH of the following two buffer solutions: (a) 1.4 M CH3COONa/1.6 M CH3COOH. (b) 0.1 M

aalyn [17]

Answer:

a) pH = 4.68 (more effective)

b) pH =4.44.

Explanation:

The pH of buffer solution is obtained by Henderson Hassalbalch's equation.

The equation is:

$pH =pKa +log\frac{[salt]}{[acid]}$

a) pKa of acetic acid = 4.74

[salt] = [CH₃COONa] = 1.4 M

[acid] = [CH₃COOH] = 1.6 M

$pH = 4.74 + log \frac{1.4}{1.6}= 4.68$

This is more effective as there is very less difference in the concentration of salt and acid.

b) pKa of acetic acid = 4.74

[salt] = [CH₃COONa] = 0.1 M

[acid] = [CH₃COOH] = 0.2 M

$pH = 4.74 + log \frac{0.1}{0.2}= 4.44$

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4 years ago

If the mass of a particular atom is exactly 5 times the mass of an atom of carbon-12, what is its mass

otez555 [7]

The mass is 60 grams.

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4 years ago

A 2.26 M solution of KOH is prepared. Calculate the moles and mass of solute present in a 15.2-mL sample of this solution. The m

kenny6666 [7]

Answer:

0.0344 moles and 1.93g.

Explanation:

Molarity is defined as the ratio between moles of a solute (In this case, KOH), and the volume. With molarity and volume we can solve the moles of solute. With moles of solute we can find mass of the solute as follows:

<em>Moles KOH:</em>

15.2mL = 0.0152L * (2.26mol / L) = 0.0344moles

0.0344 moles * (56.11g/mol) = 1.93g of KOH

7 0

3 years ago