Hydrogen Properties and Reactions Quiz

The simplest element with a 1s1 electron configuration. Its placement on the Periodic Table is debated - is it an alkali metal, a halogen, or should it be placed above carbon?

The energy required to remove an electron from a gaseous atom in its ground state. It is measured in kJ/mol.

The energy change that occurs when an electron is added to a gaseous atom in its ground state. It is measured in kJ/mol.

A measure of an atom's ability to attract electrons in a chemical bond. It is a relative scale, with fluorine being the most electronegative element.

A reaction that produces hydrogen gas. Common methods include the reaction of zinc with hydrochloric acid (laboratory scale) and the steam reforming of methane (industrial scale).

A method of producing hydrogen gas in the laboratory by reacting zinc with hydrochloric acid. This reaction produces zinc chloride and hydrogen gas as products.

An industrial process that uses methane and steam to produce hydrogen and carbon monoxide as products. The reaction is driven by entropy and occurs at high temperatures.

The tendency of a system to increase its disorder or randomness. In the steam reforming process, the reaction is driven by entropy because the products are more disordered than the reactants.

The change in enthalpy (heat content) that occurs during a chemical reaction. A positive value indicates an endothermic reaction where heat is absorbed, while a negative value indicates an exothermic reaction where heat is released.

The reaction between carbon and steam at high temperatures, which produces carbon monoxide and hydrogen gas as products. This reaction is driven by entropy and is part of the overall steam reforming process.

These compounds are formed when hydrogen combines with other elements.

Metallic hydrides are formed by the reaction of hydrogen with transition metals. They are good conductors of electricity.

These compounds are formed by the reaction of hydrogen with alkali or alkaline earth metals. They are non-conductors of electricity.

These hydrides have a fixed number of electrons that form covalent bonds.

These hydrides have lone pairs of electrons that can accept protons, making them basic.

These hydrides have a central atom surrounded by less than 8 electrons, leading to electron deficiency.

These hydrides are formed by elements that have a high electronegativity difference with hydrogen, making them acidic.

The change in free energy (∆G) associated with the formation of hydrides from their elements.

The process of creating hydrides. It can occur through direct reaction, protonation, or metathesis.

The breaking down of hydrides into other compounds. It can happen through homolytic cleavage, hydride transfer, or proton transfer.

A chemical reaction that involves the conversion of carbon monoxide (CO) and water vapor (H2O) into carbon dioxide (CO2) and hydrogen gas (H2).

A chemical reaction that involves the combination of nitrogen gas (N2) and hydrogen gas (H2) under high temperature and pressure to produce ammonia (NH3).

A chemical reaction that releases or absorbs energy.

A chemical reaction that absorbs energy.

The amount of energy released or absorbed during a chemical reaction.

A hypothetical future energy system based on the production, storage, and use of hydrogen as a primary energy carrier.

A chemical reaction that involves the combustion of hydrogen gas (H2) with oxygen gas (O2) to produce water vapor (H2O) and release a significant amount of energy.

A process that uses fossil fuels to produce hydrogen gas. It involves the reaction of methane with water vapor, producing carbon monoxide and hydrogen.

The total amount of energy released or absorbed during a chemical reaction.

A measure of energy content, often expressed in kilocalories (kcal).

A class of compounds that include crown ethers and cryptands, which can bind to specific cations based on their size and charge.

A crown ether with six oxygen atoms and a cavity size that is best suited for binding potassium cations.

A process that involves the reduction of an arene using an alkali metal as a reducing agent in ethereal solvents.

A type of organometallic compound that is formed by the reaction of an alkyl or aryl halide with lithium metal.

A method of preparing aryl lithium compounds by reacting an aryl halide with an alkyl lithium reagent.

A method of preparing unsaturated organolithium compounds by reacting an organolithium reagent with a vinyl derivative of tin.

A type of organometallic compound that is formed by the reaction of an alkyl or aryl halide with magnesium metal.

The process of forming primary alcohols from Grignard reagents by reacting them with oxygen followed by an acidic workup.

The process of forming substituted alcohols from Grignard reagents by reacting them with ketones or aldehydes followed by an acidic workup.