"What was the Chemistry Nobel Prize given for? | Explained"
Chirality
a molecule's property of not being superimposable on its mirror image, like left and right hands
Enantiomers
a pair of molecules that are mirror images of each other but not identical
Chemical molecules can have a property called chirality (from the Greek word for hand). This means a molecule and its mirror image cannot be placed on top of each other. It is like a left hand that cannot fit into a right-hand glove. These mirror-image pairs are called enantiomers. Many organic molecules exist in these paired left and right-handed forms. These molecules build DNA and proteins. In 1848, French chemist Louis Pasteur first observed that natural molecules often prefer one handedness over the other. This puzzle has shaped chemistry ever since.
Living organisms display homochirality. This means they are built almost entirely from the 'L' form of amino acids and the 'D' form of sugars. They do not use a random 50:50 mix of both forms. This is unusual. A molecule's two mirror forms usually have identical chemical stability. Why biology chose one handedness only, instead of a mix, remains an open and important question. It connects chemistry to the origin of life itself. This question also matters for medicine. Two enantiomers of the same drug can have very different effects on the human body. A well-known example is a drug whose two forms once showed sharply different safety profiles. This pushed the pharmaceutical industry toward producing medicines in a single pure chiral form.
The 2026 Nobel Prize in Chemistry was awarded jointly to Henri Kagan and Kenso Soai. They explained how a single-handed form of a molecule can be reliably and efficiently produced in the laboratory. Kagan worked in the 1980s. He showed that a chiral catalyst's own purity and the purity of the product it creates are related in a non-linear way. This means a catalyst with only partial chiral purity could still yield a product that is almost completely of one handedness. This insight made industrial production of single-handed molecules far more practical and efficient than earlier methods. Earlier methods often needed catalysts that were already near-perfectly pure. …
The 2026 Nobel Prize in Chemistry was awarded for work related to which of the following?
With reference to 'chirality' in chemistry, consider the following statements:
1.Chiral molecules are mirror images of each other that cannot be superimposed.
2.Living organisms typically use an equal (50:50) mixture of both mirror-image forms of amino acids.
Which of the statements given above is/are correct?
Which of the following statements about the contributions of the 2026 Nobel Chemistry laureates is/are correct?
1.One laureate showed that a chiral catalyst's purity and its product's purity are related in a non-linear way.
2.The other laureate designed a self-amplifying (autocatalytic) reaction that increases chiral purity over successive cycles.
Select the correct answer using the code below:
Why does the chirality of a drug molecule matter for pharmaceutical safety and effectiveness?
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