Calculate the volume of hydrogen that is formed by the interaction of 5 g

Calculate the volume of hydrogen that is formed by the interaction of 5 g of technical magnesium, containing 28% of impurities, with a solution of sulfuric acid.

Metallic magnesium dissolves in sulfuric acid solution. The chemical reaction proceeds according to the following equation:

Mg + H2SO4 = MgSO4 + H2 ↑;

Let’s find the chemical amount of magnesium.

To do this, we divide its weight by the weight of 1 mole of metallic magnesium.

M Mg = 24 grams / mol;

N Mg = 5 x (1 – 0.28) / 24 = 0.15 mol;

An equivalent amount of hydrogen gas will be synthesized.

Let’s calculate the volume of hydrogen.

For this purpose, we multiply the amount of substance by the volume of 1 mole of gas (filling volume 22.4 liters).

V H2 = 0.15 x 22.4 = 3.36 liters;




One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.

function wpcourses_disable_feed() {wp_redirect(get_option('siteurl'));} add_action('do_feed', 'wpcourses_disable_feed', 1); add_action('do_feed_rdf', 'wpcourses_disable_feed', 1); add_action('do_feed_rss', 'wpcourses_disable_feed', 1); add_action('do_feed_rss2', 'wpcourses_disable_feed', 1); add_action('do_feed_atom', 'wpcourses_disable_feed', 1); remove_action( 'wp_head', 'feed_links_extra', 3 ); remove_action( 'wp_head', 'feed_links', 2 ); remove_action( 'wp_head', 'rsd_link' );