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makvit [3.9K]
3 years ago
8

(a) Define the following terms

Chemistry
1 answer:
Leni [432]3 years ago
6 0

Explanation:

i.Periodic table:It is a chart or table of the elements arranged into columns and rows according to their physical and chemical properties.

ii.Period on the periodic table:The horizontal rows of elements

iii.Column on the periodic table:The vertical representation of elements

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exis [7]

Answer:

Answer is explained in the explanation section below.

Explanation:

Solution:

Note: This question is incomplete and lacks very important data to solve this question. But I have found the similar question which shows the profiles about which question discusses. Using the data from that question, I have solved the question.

a) We need to find the major species from A to F.

Major Species at A:

1. Na_{2} CO_{3}

Major Species at B:

1. Na_{2} CO_{3}

2. NaHCO_{3}

Major Species at C:

1. NaHCO_{3}

Major Species at D:

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Major Species at E:

1. H_{2}CO_{3}

Major Species at F:

1. H_{2}CO_{3}

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pH = pKa_{1} + log[CO_{3}.^{-2}]/[HCO_{3}.^{-1}]

pH = pKa_{1} = 6.35

Similarly, at halfway point D.  

At point D,

pH = pKa_{2} + log [HCO_{3}.^{-1}]/[H2CO_{3}]

pH = pKa_{2} = 10.33

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