
Concept explainers
(a)
Interpretation:
The statement that one mole of
(a)

Answer to Problem 3RQ
The statement is correct.
Explanation of Solution
The given balanced equation is,
In the mole ratio, the coefficients of the balanced equation are used. Therefore the mole ratio is
The number of moles of phosphine can be calculated as,
The statement that one mole of
(b)
Interpretation:
The statement that one gram of
(b)

Answer to Problem 3RQ
The statement is incorrect.
Explanation of Solution
Given,
The mass of
The mass of phosphine is
The molecular weight of phosphine is
The molecular weight of
The given balanced equation is,
In the mole ratio, the coefficients of the balanced equation are used. Therefore the mole ratio is
The number of grams of phosphine can be calculated as,
The statement one gram of
(c)
Interpretation:
The statement that three moles of
(c)

Answer to Problem 3RQ
The statement is correct.
Explanation of Solution
The given balanced equation is,
In the mole ratio, the coefficients of the balanced equation are used. Therefore the mole ratio is
The statement that three moles of
(d)
Interpretation:
The statement that the mole ratio between phosphine and calcium phosphide is
(d)

Answer to Problem 3RQ
The statement is correct.
Explanation of Solution
The given balanced equation is,
In the mole ratio, the coefficients of the balanced equation are used. Therefore the mole ratio is
The statement is correct statement.
(e)
Interpretation:
The statement
(e)

Answer to Problem 3RQ
The statement is incorrect.
Explanation of Solution
The given balanced equation is,
In the mole ratio, the coefficients of the balanced equation are used. Therefore the mole ratio is
The number of moles of phosphine produced from water can be calculated as,
(f)
Interpretation:
The statement
(f)

Answer to Problem 3RQ
The statement is correct.
Explanation of Solution
The given balanced equation is,
In the mole ratio, the coefficients of the balanced equation are used. Therefore the mole ratio is
The number of moles of
(g)
Interpretation:
The possibility of limiting agent being
Concept Introduction:
The limiting reactant of the reaction is the reactant that is completely used during the reaction. Using the mole ratio and starting amounts of the reactants limiting reactant can be determined.
Example:
Consider a reaction starts with
(g)

Answer to Problem 3RQ
The statement is incorrect.
Explanation of Solution
Given,
The mass of
The mass of
The molecular weight of phosphine is
The molecular weight of
The molecular weight of
The given balanced equation is,
The amount of water needed to react with
The amount of water present is less than needed to react with
(h)
Interpretation:
The theoretical yield of
(h)

Answer to Problem 3RQ
The statement is incorrect.
Explanation of Solution
Given,
The mass of
The mass of
The molecular weight of phosphine is
The molecular weight of
The molecular weight of
The given balanced equation is,
The theoretical yield of phosphine from
The theoretical yield of phosphine from
The theoretical yield of phosphine is
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Chapter 9 Solutions
EBK FOUNDATIONS OF COLLEGE CHEMISTRY
- 111 Carbonyl Chem Choosing reagants for a Wittig reaction What would be the best choices for the missing reagents 1 and 3 in this synthesis? 1. PPh3 3 1 2 2. n-BuLi • Draw the missing reagents in the drawing area below. You can draw them in any arrangement you like. Do not draw the missing reagent 2. If you draw 1 correctly, we'll know what it is. • Note: if one of your reagents needs to contain a halogen, use bromine. Explanation Check Click and drag to start drawing a structure. × ©2025 McGraw Hill LLC. All Rights Reserved. Terms of Usearrow_forwardA student proposes the transformation below in one step of an organic synthesis. There may be one or more reactants missing from the left-hand side, but there are no products missing from the right-hand side. There may also be catalysts, small inorganic reagents, and other important reaction conditions missing from the arrow. • Is the student's transformation possible? If not, check the box under the drawing area. . If the student's transformation is possible, then complete the reaction by adding any missing reactants to the left-hand side, and adding required catalysts, inorganic reagents, or other important reaction conditions above and below the arrow. • You do not need to balance the reaction, but be sure every important organic reactant or product is shown. + T X O O лет-ле HO OH HO OH This transformation can't be done in one step.arrow_forwardDetermine the structures of the missing organic molecules in the following reaction: X+H₂O H* H+ Y OH OH Note: Molecules that share the same letter have the exact same structure. In the drawing area below, draw the skeletal ("line") structures of the missing organic molecules X and Y. You may draw the structures in any arrangement that you like, so long as they aren't touching. Click and drag to start drawing a structure. X Sarrow_forward
- Predict the major products of this organic reaction. If there aren't any products, because nothing will happen, check the box under the drawing area instead. No reaction. HO. O :☐ + G Na O.H Click and drag to start drawing a structure. XS xs H₂Oarrow_forwardWhat are the angles a and b in the actual molecule of which this is a Lewis structure? H H C H- a -H b H Note for advanced students: give the ideal angles, and don't worry about small differences from the ideal groups may have slightly different sizes. a = b = 0 °arrow_forwardWhat are the angles a and b in the actual molecule of which this is a Lewis structure? :0: HCOH a Note for advanced students: give the ideal angles, and don't worry about small differences from the ideal that might be caused by the fact that different electron groups may have slightly different sizes. a = 0 b=0° Sarrow_forward
- Determine the structures of the missing organic molecules in the following reaction: + H₂O +H OH O OH +H OH X Note: Molecules that share the same letter have the exact same structure. In the drawing area below, draw the skeletal ("line") structure of the missing organic molecule X. Click and drag to start drawing a structure.arrow_forwardIdentify the missing organic reactant in the following reaction: x + x O OH H* + ☑- X H+ O O Х Note: This chemical equation only focuses on the important organic molecules in the reaction. Additional inorganic or small-molecule reactants or products (like H₂O) are not shown. In the drawing area below, draw the skeletal ("line") structure of the missing organic reactant X. Click and drag to start drawing a structure. Carrow_forwardCH3O OH OH O hemiacetal O acetal O neither O 0 O hemiacetal acetal neither OH hemiacetal O acetal O neither CH2 O-CH2-CH3 CH3-C-OH O hemiacetal O acetal CH3-CH2-CH2-0-c-O-CH2-CH2-CH3 O neither HO-CH2 ? 000 Ar Barrow_forward
- What would be the best choices for the missing reagents 1 and 3 in this synthesis? 1. PPh3 2 2. n-BuLi 3 Draw the missing reagents in the drawing area below. You can draw them in any arrangement you like. • Do not draw the missing reagent 2. If you draw 1 correctly, we'll know what it is. • Note: if one of your reagents needs to contain a halogen, use bromine. Explanation Check Click and drag to start drawing a structure.arrow_forwardPredict the products of this organic reaction: NaBH3CN + NH2 ? H+ Click and drag to start drawing a structure. ×arrow_forwardPredict the organic products that form in the reaction below: + OH +H H+ ➤ ☑ X - Y Note: You may assume you have an excess of either reactant if the reaction requires more than one of those molecules to form the products. In the drawing area below, draw the skeletal ("line") structures of the missing organic products X and Y. You may draw the structures in any arrangement that you like, so long as they aren't touching. Click and drag to start drawing a structure. Garrow_forward
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