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Descriptive Inorganic Chemistry

James House, Kathleen A. House

Chapter 6

Hydrogen - all with Video Answers

Educators

Chapter Questions

01:57

Problem 1

Explain why there are more covalent than ionic binary compounds of hydrogen.

Shazia Naz
Shazia Naz
Numerade Educator
17:46

Problem 2

Write balanced equations for the following processes.
(a) Dehydrogenation of pentane
(b) The reaction of carbon with high temperature steam
(c) The reaction of sodium hydride with water
(d) The electrolysis of water
(e) The reaction of zinc with aqueous $\mathrm{HCl}$

Shazia Naz
Shazia Naz
Numerade Educator
03:47

Problem 3

Complete and balance the following.
(a) $\mathrm{Li}+\mathrm{H}_2 \rightarrow$
(b) $\mathrm{Ca}_3 \mathrm{~N}_2+\mathrm{H}_2 \rightarrow$
(c) $\mathrm{CaH}_2+\mathrm{CH}_3 \mathrm{OH} \rightarrow$
(d) $\mathrm{Zn}+\mathrm{NaOH}+\mathrm{H}_2 \mathrm{O} \rightarrow$
(e) $\mathrm{Cd}\left(\mathrm{C}_2 \mathrm{H}_5\right)+\mathrm{LiAlH}_4 \rightarrow$

Crystal Wang
Crystal Wang
Numerade Educator
01:52

Problem 4

Describe the steam reformer process for producing hydrogen.

Crystal Wang
Crystal Wang
Numerade Educator
02:47

Problem 5

Describe some of the major difficulties associated with a hydrogen gas-based energy program.

Angela Deane
Angela Deane
Numerade Educator
02:12

Problem 6

Write the equations to describe the preparation of the following compounds. Give conditions where possible.
(a) $\mathrm{H}_2$ (commercial production)
(b) Diborane starting with magnesium metal and boron
(c) $\mathrm{NaOH}$ (commercial production)
(d) Styrene, $\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}=\mathrm{CH}_2$

Grigoriy Sereda
Grigoriy Sereda
Numerade Educator
02:17

Problem 7

Given the stability of the water molecule, speculate on the type of processes that could be used to produce the large quantities of hydrogen necessary for the gas to serve as the major energy source. Keep in mind that the processes must produce the gas cheaply enough for it to be economically competitive with other energy sources.

Lottie Adams
Lottie Adams
Numerade Educator
01:08

Problem 8

Complete and balance the following.
(a) $\mathrm{LiAlH}_4+\mathrm{SnCl}_4 \rightarrow$
(b) $\mathrm{Ca}+\mathrm{H}_2 \mathrm{O} \rightarrow$
(c) $\mathrm{AlCl}_3+\mathrm{LiH} \rightarrow$
(d) $\mathrm{CaH}_2+\mathrm{H}_2 \mathrm{O} \rightarrow$
(e) $\mathrm{Al}+\mathrm{NaOH}+\mathrm{H}_2 \mathrm{O} \rightarrow$

Ronald Prasad
Ronald Prasad
Numerade Educator
03:45

Problem 9

Using the hard-soft interaction principle, explain why the apparent ionic radius of $\mathrm{H}^{-}$in $\mathrm{LiH}$ is smaller than it is in $\mathrm{KH}$.

Kathryn Rouse
Kathryn Rouse
Numerade Educator
01:58

Problem 10

Which of the following reactions would take place more rapidly if all other conditions are the same? Provide an explanation for your answer.
$$
\begin{aligned}
& \mathrm{CH}_3 \mathrm{COOH}+\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH} \rightarrow \mathrm{CH}_3 \mathrm{COOC}_2 \mathrm{H}_5+\mathrm{H}_2 \mathrm{O} \\
& \mathrm{CH}_3 \mathrm{COOD}+\mathrm{C}_2 \mathrm{H}_5 \mathrm{OD} \rightarrow \mathrm{CH}_3 \mathrm{COOC}_2 \mathrm{H}_5+\mathrm{D}_2 \mathrm{O}
\end{aligned}
$$

Anupa Sharad Medhekar
Anupa Sharad Medhekar
Numerade Educator
02:44

Problem 11

How does the electrolysis of water lead to the production of $\mathrm{D}_2 \mathrm{O}$ ?

Gustavo Aroeira
Gustavo Aroeira
Numerade Educator
01:56

Problem 12

Explain why acetylene, $\mathrm{C}_2 \mathrm{H}_2$, behaves as an acid and reacts with active metals to liberate hydrogen.

Stephen Ho
Stephen Ho
Numerade Educator
01:26

Problem 13

Explain why a linear structure for $\mathrm{H}_3{ }^{+}$would be less stable than a triangular one.

ES
Eugene Schneider
University of Minnesota - Twin Cities
01:30

Problem 14

From the standpoint of structure and bonding, explain why transition metals such as palladium and nickel are often used as catalysts for hydrogenation reactions.

David Collins
David Collins
Numerade Educator
01:02

Problem 15

Explain the following observations.
(a) Interstitial hydrides are less dense than the parent metal.
(b) Interstitial hydrides have variable composition.
(c) Interstitial hydrides are poorer conductors of electricity than the parent metal.
(d) Ionic hydrides are more dense than the parent metal.

Narayan Hari
Narayan Hari
Numerade Educator