chemistry

Lev Pisarzhevsky

Lev Pisarzhevsky is a chemistry topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Lev Pisarzhevsky rather than just read about it. In short: Lev Vladimirovich Pisarzhevsky (also transliterated as Pisarzhevskii: Russian: Лев Влади́мирович Писарже́вский; 13 February 1874 – 23 March 1938) was a Ukrainian Soviet chemist who studied peroxides, peracids, and solutions. His contribution to the theory of catalysis is best known for his attempt to relate the catalytic properties of solids to their electronic properties.

Key takeaways

Lev Pisarzhevsky belongs to chemistry; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Lev Pisarzhevsky to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Lev Pisarzhevsky from memory before moving on to harder problems.

Reference excerpt

Lev Vladimirovich Pisarzhevsky (also transliterated as Pisarzhevskii: Russian: Лев Влади́мирович Писарже́вский; 13 February 1874 – 23 March 1938) was a Ukrainian Soviet chemist who studied peroxides, peracids, and solutions. His contribution to the theory of catalysis is best known for his attempt to relate the catalytic properties of solids to their electronic properties.

Biography Lev Vladimirovich Pisarzhevsky was born on 13 February 1874 in Chișinău in the Bessarabia Governorate of the Russian Empire (now Moldova). His mother relocated the family to Odesa following his father's death, where Lev Pisarzhevsky worked to support the family and studied at a school of classical education. He graduated from Novorossiysky University (now Odesa National University) in 1896 and proceeded to work on inorganic peroxides with his university instructor P. Melikishvili. He spent the period from 1900 to 1903 abroad, where he worked in Germany with Wilhelm Ostwald in 1900-1902 and also became acquainted with such leading Western European contributors to physical chemistry as Jacobus Henricus van 't Hoff, Svante Arrhenius, and Walther Nernst. The young Pisarzhevsky succeeded Gustav Tammann as professor of chemistry at Yuryev University (now University of Tartu) after being recommended by Dmitry Mendeleyev in 1904. His Tartu work contributed to the formulation of the Walden-Pisarzhevsky rule. Pisarzhevsky lectured in St. Petersburg between 1911 and 1913 and was awarded a doctoral degree for a dissertation entitled Thee Free Energy of Chemical Reaction and the Solvent in 1913. He subsequently taught in Yekaterinoslav (now Dnipro; in 1926-2016 Dnipropetrovsk) and was a founder of the Ukrainian Institute of Physical Chemistry (now the L. V. Pisarzhevsky Institute of Physical Chemistry of the National Academy of Sciences of Ukraine) in 1927. He was elected a corresponding member of the Academy of Sciences of the USSR in 1928 and a full member in 1930. He died in Dnipropetrovsk on 23 March 1938 after a period of deteriorating health.

References

External links Media related to Lev Pisarzhevsky at Wikimedia Commons

A profile on the Russian Academy of Sciences website (in Russian)

Illustrations

Worked examples

Example 1 — a first encounter with Lev Pisarzhevsky

Start with the simplest possible case. Write down what Lev Pisarzhevsky claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Lev Pisarzhevsky before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Lev Pisarzhevsky ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Lev Pisarzhevsky

In research: Lev Pisarzhevsky appears in chemistry research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Lev Pisarzhevsky in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Lev Pisarzhevsky is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1874 births, 1938 deaths, 20th-century Russian chemists, so understanding it makes those chapters shorter.
In everyday life: Look for Lev Pisarzhevsky outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Lev Pisarzhevsky” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Lev Pisarzhevsky in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Lev Pisarzhevsky means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Lev Pisarzhevsky out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Lev Pisarzhevsky in simple terms?

Why does Lev Pisarzhevsky matter?

Because it connects several chemistry ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Lev Pisarzhevsky?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Lev Pisarzhevsky.