chemistry

Sodium bis(carbonato)cuprate(II)

Sodium bis(carbonato)cuprate(II) 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 Sodium bis(carbonato)cuprate(II) rather than just read about it. In short: Sodium bis(carbonato)cuprate(II) is a complex compound of copper containing the carbonato ligand, with the chemical formula Na2[Cu(CO3)2]. It forms royal blue, monoclinic crystals.

Key takeaways

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

Reference excerpt

Sodium bis(carbonato)cuprate(II) is a complex compound of copper containing the carbonato ligand, with the chemical formula Na2[Cu(CO3)2]. It forms royal blue, monoclinic crystals. A trihydrate exists.

Occurrence The anhydrous form occurs naturally as the mineral juangodoyite, while the trihydrate is found as chalconatronite. It can also be found as a corrosion product in objects made of copper alloy and formed as an intermediate in the production of Cu/ZnO/Al2O3 catalysts.

Properties The compound decomposes in water but can be recrystallized from a concentrated solution of sodium carbonate containing bicarbonate. Like all other copper(II) compounds, sodium bis(carbonato)cuprate(II) is paramagnetic due to the unpaired electron in its 3d orbital.

Preparation The trihydrate can be prepared by treating a sodium carbonate-bicarbonate solution with aqueous copper(II) acetate dropwise at 50 °C under stirring. A clear, deep blue solution free of basic copper carbonate is obtained. Needle-like crystals of the product form upon cooling. The anhydrous compound can be prepared by heating the trihydrate in boiling saturated aqueous sodium carbonate-bicarbonate solution. Elongated, royal blue insoluble single crystals are obtained.

Related compounds The potassium salt, potassium bis(carbonato)cuprate(II) (K2Cu(CO3)2), has been characterized by single-crystal X-ray diffraction. Sodium salts of carbonato complexes of other metals including magnesium, cobalt, nickel, and zinc have also been investigated.

References

Further reading Gregson, Anthony K.; Moxon, Neville T. (Jan 1981). "Single-crystal magnetic properties of sodium bis(carbonato)cuprate(II): a three-dimensional antiferromagnet". Inorganic Chemistry. 20 (1): 78–81. doi:10.1021/ic50215a019. ISSN 0020-1669.

Illustrations

Worked examples

Example 1 — a first encounter with Sodium bis(carbonato)cuprate(II)

Start with the simplest possible case. Write down what Sodium bis(carbonato)cuprate(II) 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 Sodium bis(carbonato)cuprate(II) 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 Sodium bis(carbonato)cuprate(II) 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 Sodium bis(carbonato)cuprate(II)

In research: Sodium bis(carbonato)cuprate(II) 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 Sodium bis(carbonato)cuprate(II) 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: Sodium bis(carbonato)cuprate(II) is common in secondary-school and first-year university syllabi. It links to neighbouring topics Carbonato complexes, Copper(II) compounds, Sodium compounds, so understanding it makes those chapters shorter.
In everyday life: Look for Sodium bis(carbonato)cuprate(II) 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 Sodium bis(carbonato)cuprate(II) in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Sodium bis(carbonato)cuprate(II) 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 Sodium bis(carbonato)cuprate(II) out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Sodium bis(carbonato)cuprate(II) in simple terms?

Sodium bis(carbonato)cuprate(II) is a complex compound of copper containing the carbonato ligand, with the chemical formula Na2[Cu(CO3)2]. It forms royal blue, monoclinic crystals.

Why does Sodium bis(carbonato)cuprate(II) 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 Sodium bis(carbonato)cuprate(II)?

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 Sodium bis(carbonato)cuprate(II).