chemistry

Karl Albert Hasselbalch

Karl Albert Hasselbalch 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 Karl Albert Hasselbalch rather than just read about it. In short: Karl Albert Hasselbalch (Danish pronunciation: [ˈkʰɑˀl ˈælˀpɐt ˈhæsl̩ˌpælˀk]; 1 November 1874 – 19 September 1962) was a Danish physician and chemist known for his work on the Henderson–Hasselbalch equation. Early life and education Hasselbalch was born in Åstrup, near Hjørring, Denmark, on 1 November 1874.

Key takeaways

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

Reference excerpt

Early life and education Hasselbalch was born in Åstrup, near Hjørring, Denmark, on 1 November 1874. His parents were landowner and lawyer Hans Peter Jansen Hasselbalch (1843–1916) and Hedevig Alberta Rebekka Spärck (1845–1876). In 1879, his father remarried to Wilhelmine Marie Koppel (1858–1950). Hasselbalch received his medical degree in 1898 and his doctorate in 1899 for his thesis on the respiratory metabolism in the chicken embryo.

Career Hasselbalch was a pioneer in the use of pH measurement in medicine (with Christian Bohr, father of Niels Bohr), and he described how the affinity of blood for oxygen was dependent on the concentration of carbon dioxide. He was also the first to determine the pH of blood. In 1916, he converted the 1908 equation of Lawrence Joseph Henderson to logarithmic form, which is now known as the Henderson–Hasselbalch equation.

Personal life Hasselbalch married Nanna Ida Elisabeth Heerfordt on July 26, 1904, in Hjørring. He remarried Antonie Sophie Hagemann, daughter of Gustav Adolph Hagemann, on December 5th of 1906. Through this marriage, he inherited Hagemann's Borupgård at Snekkersten. Together, they had six children, including Danish director Hagen Hasselbalch and Anders Hasselbalch, who died in 1929 and in whose honor Hasselbalch created the Anders Hasselbalch Fund to Fight Leukemia. Hasselbalch purchased Grønnessegaard in 1921. Eight years later, he bought Heimdal near Sønder Omme.

References

Worked examples

Example 1 — a first encounter with Karl Albert Hasselbalch

Start with the simplest possible case. Write down what Karl Albert Hasselbalch 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 Karl Albert Hasselbalch 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 Karl Albert Hasselbalch 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 Karl Albert Hasselbalch

In research: Karl Albert Hasselbalch 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 Karl Albert Hasselbalch 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: Karl Albert Hasselbalch is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1874 births, 1962 deaths, 20th-century Danish farmers, so understanding it makes those chapters shorter.
In everyday life: Look for Karl Albert Hasselbalch 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.

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How to study Karl Albert Hasselbalch in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Karl Albert Hasselbalch 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 Karl Albert Hasselbalch out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Karl Albert Hasselbalch in simple terms?

Karl Albert Hasselbalch (Danish pronunciation: [ˈkʰɑˀl ˈælˀpɐt ˈhæsl̩ˌpælˀk]; 1 November 1874 – 19 September 1962) was a Danish physician and chemist known for his work on the Henderson–Hasselbalch equation. Early life and education Hasselbalch was born in Åstrup, near Hjørring, Denmark, on 1 Novem…

Why does Karl Albert Hasselbalch 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 Karl Albert Hasselbalch?

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 Karl Albert Hasselbalch.