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Concept explainers
(a)
Interpretation:
The meaning of the equation needs to be stated in the terms of numbers of individual molecules and in the terms of moles of molecules.
Concept Introduction:
The balanced equation shows that different reactants react in a fixed mol ratio to form products. The reactants react in a fixed molecular ratio to form products.
Molecules are a small unit of mol. We know that 1mol of any substance contains 6.022 x 1023 molecules of that substance. (
(a)
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Answer to Problem 3A
2 molecules of NO gas react with 1 molecule of O2 gas to produce 2 molecules of NO2 gas.
2 moles of NO molecules react with 1 mol of O2 molecules to produce 2 moles of NO2 molecules.
Explanation of Solution
The above equation is not balanced because atoms on both sides of the arrow are not equal. The balanced equation is:
Now atoms on both sides of the arrow are equal, so the equation is balanced.
The meaning of the equation in terms of individual molecules:
2 molecules of NO gas react with 1 molecule of O2 gas to produce 2 molecules of NO2 gas.
The meaning of the equation in terms of moles of molecules:
2 moles of NO molecules react with 1 mol of O2 molecules to produce 2 moles of NO2 molecules.
(b)
Interpretation:
The meaning of the equation needs to be stated in the terms of numbers of individual molecules and in the terms of moles of molecules.
Concept Introduction:
The balanced equation shows that different reactants react in a fixed mol ratio to form products. The reactants react in a fixed molecular ratio to form products.
Molecules are a small unit of mol. We know that 1mol of any substance contains 6.022 x 1023 molecules of that substance. (Avogadro number). In a balanced equation, coefficients are used to show the quantities of both the reactants and products in the reaction.
(b)
![Check Mark](/static/check-mark.png)
Answer to Problem 3A
The balanced equation is:
When 2 molecules of aqueous AgCH3COO react with 1 molecule of aqueous CuSO4 , 1 molecule of silver sulfate (Ag2SO4) precipitated out and 1 molecule of Cu(CH3COO)2is the aqueous product.
When 2 moles of aqueous AgCH3COO molecules react with 1 mol of aqueous CuSO4 molecules, 1 mol of (Ag2SO4) molecules precipitated out and 1mol of Cu(CH3COO)2molecules are the aqueous product.
Explanation of Solution
The balanced equation is:
The meaning of the equation in terms of individual molecules:
When 2 molecules of aqueous AgCH3COO react with 1 molecule of aqueous CuSO4 , 1 molecule of silver sulfate (Ag2SO4) precipitated out and 1 molecule of Cu(CH3COO)2is the aqueous product.
The meaning of the equation in terms of moles of molecules:
When 2 moles of aqueous AgCH3COO molecules react with 1 mol of aqueous CuSO4 molecules, 1 mol of silver sulfate (Ag2SO4) molecules precipitated out and 1mol of Cu(CH3COO)2molecules are the aqueous product.
(c)
Interpretation:
The meaning of the equation needs to be stated in the terms of numbers of individual molecules and in the terms of moles of molecules.
Concept Introduction:
The balanced equation shows that different reactants react in a fixed mol ratio to form products. The reactants react in a fixed molecular ratio to form products.
Molecules are a small unit of mol. We know that 1mol of any substance contains 6.022 x 1023 molecules of that substance. (Avogadro number). In a balanced equation, coefficients are used to show the quantities of both the reactants and products in the reaction.
(c)
![Check Mark](/static/check-mark.png)
Answer to Problem 3A
The balanced equation is:
When 1 molecule of phosphorus trichloride (PCl3) reacts with 3 molecules of water, 1 molecule of phosphoric acid(H3PO3) and 3 molecules of hydrochloric gas is produced.
When 1 mol of phosphorus trichloride (PCl3) molecules react with 3 moles of water molecules, 1 mol of phosphoric acid(H3PO3) molecules and 3 moles of hydrochloric gas molecules is produced
Explanation of Solution
The balanced equation is:
The meaning of the equation in terms of individual molecules:
When 1 molecule of phosphorus trichloride (PCl3) reacts with 3 molecules of water, 1 molecule of phosphoric acid(H3PO3) and 3 molecules of hydrochloric gas is produced.
The meaning of the equation in terms of moles of molecules:
When 1 mol of phosphorus trichloride (PCl3) molecules react with 3 moles of water molecules, 1 mol of phosphoric acid(H3PO3) molecules and 3 moles of hydrochloric gas molecules is produced.
(d)
Interpretation:
The meaning of the equation needs to be stated in the terms of numbers of individual molecules and in the terms of moles of molecules.
Concept Introduction:
The balanced equation shows that different reactants react in a fixed mol ratio to form products. The reactants react in a fixed molecular ratio to form products.
Molecules are a small unit of mol. We know that 1mol of any substance contains 6.022 x 1023 molecules of that substance. (Avogadro number). In a balanced equation, coefficients are used to show the quantities of both the reactants and products in the reaction.
(d)
![Check Mark](/static/check-mark.png)
Answer to Problem 3A
The balanced equation is:
When 1 molecule of C2H6 reacts with 1 molecule of Cl2 gas, 1 molecule of C2H5Cl, and 1 molecule of HCl gas is produced.
When 1 mol of C2H6 molecules react with 1 mol of Cl2 gas molecules, 1 mol of C2H5Cl molecules and 1 mol of HCl gas molecules are produced.
Explanation of Solution
The balanced equation is:
The meaning of the equation in terms of individual molecules:
When 1 molecule of C2H6 reacts with 1 molecule of Cl2 gas, 1 molecule of C2H5Cl, and 1 molecule of HCl gas is produced.
The meaning of the equation in terms of moles of molecules:
When 1 mol of C2H6 molecules react with 1 mol of Cl2 gas molecules, 1 mol of C2H5Cl molecules and 1 mol of HCl gas molecules are produced.
Chapter 9 Solutions
World of Chemistry, 3rd edition
- (f) SO: Best Lewis Structure 3 e group geometry:_ shape/molecular geometry:, (g) CF2CF2 Best Lewis Structure polarity: e group arrangement:_ shape/molecular geometry: (h) (NH4)2SO4 Best Lewis Structure polarity: e group arrangement: shape/molecular geometry: polarity: Sketch (with angles): Sketch (with angles): Sketch (with angles):arrow_forward1. Problem Set 3b Chem 141 For each of the following compounds draw the BEST Lewis Structure then sketch the molecule (showing bond angles). Identify (i) electron group geometry (ii) shape around EACH central atom (iii) whether the molecule is polar or non-polar (iv) (a) SeF4 Best Lewis Structure e group arrangement:_ shape/molecular geometry: polarity: (b) AsOBr3 Best Lewis Structure e group arrangement:_ shape/molecular geometry: polarity: Sketch (with angles): Sketch (with angles):arrow_forward(c) SOCI Best Lewis Structure 2 e group arrangement: shape/molecular geometry:_ (d) PCls Best Lewis Structure polarity: e group geometry:_ shape/molecular geometry:_ (e) Ba(BrO2): Best Lewis Structure polarity: e group arrangement: shape/molecular geometry: polarity: Sketch (with angles): Sketch (with angles): Sketch (with angles):arrow_forward
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