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(a)
Interpretation:
The chemical formula and balanced chemical equation of sodium sulphide from sodium and sulphur has to be written.
Concept Introduction:
- 1) The chemical formula of binary compound from a pair of its constituent ion has to be written.
- 2) The coefficients of the ions with the magnitude of the charge on each of the ions have to be crossed multiplied. This is done to neutralize charge on the binary compound.
- 3) The oxidation state of the metal is written in roman numbers in the brackets
(a)
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Answer to Problem 6.23P
The chemical formula is
The balanced chemical equation is
Explanation of Solution
Sodium has a monopositive charge
But sulphur in nature exists as
Sixteen moles of sodium are required in the reactant side and eight moles of sodium sulphide are required in the product side to make the equation a balanced one. The balanced chemical equation is,
(b)
Interpretation:
The chemical formula and balanced chemical equation of calcium bromide from calcium and bromine has to be written.
Concept Introduction:
Refer to part (a).
(b)
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Answer to Problem 6.23P
The chemical formula is
The balanced chemical equation is
Explanation of Solution
Calcium has a dipositive charge
But bromine in nature exists as
The above reaction is self-balanced.
(c)
Interpretation:
The chemical formula and balanced chemical equation of barium oxide from barium and oxygen has to be written.
Concept Introduction:
Refer to part (a).
(c)
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Answer to Problem 6.23P
The chemical formula is
The balanced chemical equation is
Explanation of Solution
Barium has a dipositive charge
But oxygen in nature exists as
Two moles of barium are required in the reactant side and two moles of barium oxide are required in the product side to make the equation a balance one. The balanced chemical equation is,
(d)
Interpretation:
The chemical formula and balanced chemical equation of sulphur trioxide from sulphur dioxide and oxygen has to be written.
Concept Introduction:
Refer to part (a).
(d)
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Answer to Problem 6.23P
The chemical formula is
The balanced chemical equation is
Explanation of Solution
Sulphur dioxide and oxygen exists as gas in nature. They react with each other to form sulphur trioxide. The
Two moles of sulphur dioxide are required in the reactant side and two moles of sulphur trioxide are required in the product side to make the reaction a balanced one. The balanced equation is,
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Chapter 6 Solutions
General Chemistry
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