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2 years ago

A buffer solution is 0.310 M in H2SO3 and 0.304 M in NaHSO3. If Ka1 forH2SO4 is 1.7e-2 , what is the pH of this buffer solution

Chemistry

1 answer:

natka813 [3]2 years ago

4 0

Answer:

pH of the buffer solution is 1.76

Explanation:

To find the pH of a buffer we can use Henderson-Hasselbalch equation:

pH = pKa + log [A⁻] / [HA]

Where pKa is -log Ka= 1.77 And [A⁻] is molar concentration of conjugate base, NaHSO₃ and [HA] molar concentration of weak acid, H₂SO₃

Replacing values of the problem:

pH = 1.77 + log [0.304M] / [0.310M]

pH = 1.76

<h3>pH of the buffer solution is 1.76</h3>

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The cis and trans geometric isomers of a compound have different chemical and physical properties. Draw the structure of the geo

frutty [35]

Answer: The structure of the geometrical isomers are attached below.

Explanation:

Cis- and Trans- isomers are the geometrical isomers which have same chemical formula but different structural formula

According to CIP rule, the groups on the doubly bonded carbon atoms are given priorities based on the the atomic masses of first connected atom.

If the highest priority groups are on the same side, it is known as cis-form and if the highest priority groups are on opposite side, it is known as trans-form.

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2 years ago

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Answer:

False

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Science is not based on primarily on peoples opinions and views of the subject matter whereas science is based on empirical observations and research for its validity.

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Science can change people's opinions regarding the natural world with valid proof and observational theories but science is not based on people's opinion.

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2 years ago

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Answer:

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2 years ago

Which of the following is not a correct chemical equation for a double displacement reaction?

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Answer:

B. CaCl + LiCO3 yields CaCO3 + LiCl is not correct

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Explanation:

For a reaction to be double displacement reaction there are two things we need to look for

1) There must be an interchange of the group of ions

2) The reactants must dissolve in water to release ions

A. 2RbNO3 + BeF2 yields Be(NO3)2 + 2RbF

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This is correct

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This is not correct

The correct equation is:

CaCl2 + Li2CO3 → Ca2+ + 2Cl- + 2Li+ + CO3^2- → 2LiCl + CaCO3

C. Na3PO4 + 3KOH yields 3NaOH + K3PO4

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This is correct

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2 years ago