Skip to main content
Ch.22 - The Main Group Elements
McMurry - Chemistry 8th Edition
McMurry8th EditionChemistryISBN: 9781292336145Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoMcMurry 8th EditionCh.22 - The Main Group ElementsProblema 21
Capitolo 22, Problema 21

Look at the location of elements A, B, C, and D in the following
periodic table:
(c) Which hydrides react with water to give H2 gas? Write a balanced net ionic equation for each reaction.

Guida verificata passo dopo passo
1
Identify the elements A, B, C, and D on the periodic table. Determine their group and period.
Recognize that elements in groups 1 and 2 (alkali and alkaline earth metals) typically form hydrides that react with water to produce hydrogen gas.
For each element that forms a hydride reacting with water, write the general reaction: MH_x + H_2O \(\rightarrow\) M(OH)_x + H_2, where M is the metal and x is the number of hydrogens in the hydride.
Convert the general reaction into a net ionic equation by removing spectator ions. For example, for a group 1 metal hydride, the net ionic equation is: MH + H_2O \(\rightarrow\) M^+ + OH^- + H_2.
Ensure the net ionic equations are balanced in terms of both mass and charge.

Risposta video verificata per un problema simile:

Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.

Concetti chiave

Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.

Hydrides

Hydrides are compounds formed between hydrogen and another element. They can be classified into different types, such as ionic, covalent, and metallic hydrides. The reactivity of hydrides with water varies based on their composition; for instance, alkali metal hydrides typically react vigorously with water to produce hydrogen gas and a corresponding hydroxide.
Video consigliato:
Percorso guidato
02:00
Ionic Hydrides

Net Ionic Equations

A net ionic equation represents the chemical species that are involved in a reaction, excluding spectator ions that do not participate in the reaction. This type of equation is useful for simplifying reactions in aqueous solutions, allowing chemists to focus on the actual chemical changes occurring. To write a net ionic equation, one must first write the balanced molecular equation and then remove the spectator ions.
Video consigliato:
Percorso guidato
00:51
Net Ionic Equations

Reactivity of Elements in Water

The reactivity of elements with water is influenced by their position in the periodic table. Alkali metals and some alkaline earth metals readily react with water, often producing hydrogen gas and a hydroxide. Understanding the trends in reactivity, such as increasing reactivity down a group, is essential for predicting which hydrides will react with water to release hydrogen gas.
Video consigliato:
Percorso guidato
02:35
Elemental Forms of Elements
Pratica correlata
Domanda del libro di testo

Look at the location of elements A, B, C, and D in the following periodic table:

(d) Which hydrides react with water to give an acidic solution, and which give a basic solution?

102
views
Domanda del libro di testo

Look at the location of elements A, B, C, and D in the following periodic table:

(a) Write the formula of the simplest binary hydride of each element.

81
views
Domanda del libro di testo

GeCl4 reacts with Cl- to give GeCl62-, but CCl4 does not react with excess Cl-. Explain.

97
views
Domanda del libro di testo

Compare some of the physical properties of H2S, NaH, and PdHx.

84
views
Domanda del libro di testo

The following models represent the structures of binary hydrides

of second-row elements:

(a) Identify the nonhydrogen atom in each case, and write the molecular formula for each hydride.

106
views