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What is the most effective way to balance redox equations which include hydrogen and oxygen?

The first thing you must do is balance all atoms on either side of the equation besides hydrogen and oxygen. Secondly add water to the side which is oxygen defecient to balance out the atoms of oxygen on ...

Answered by Euan C. • Chemistry tutor

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What are 3 characteristics of Benzene that go against the proposed Kekule model?

The Kekule model states Benzene consists of 3 pairs of alternating double C=C and single C-C bonds. A typical C=C bond would readily react with bromine to produce a dibromo-alkane and therefore would reac...

Answered by Chris G. • Chemistry tutor

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Draw the structure, name the shape and show bond angles of the molecules XeF4 and SbF4-. In your answer explain why each structure is different, despite both having a central atom, surrounded by 4 fluorine atoms.

Xe is in group 8, the noble gases. Therefore it has 8 electrons in its outer shell. Fluorine atoms have 7 electrons, yet one is an unpaired electron, so this is the electron in fluorine that gets involved...

Answered by George J. • Chemistry tutor

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By considering the mechanism of the two step reaction of butanone and NaBH4 followed by dilute acid, explain why the product has no effect on plane polarised light.

CH₃-CO-CH₂-CH₃ + 2[H] --> CH₃-CHOH-CH₂-CH₃ NaBH₄ is a reducing agent that effectively produces an H^- ion to act a...

Answered by Alex J. • Chemistry tutor

15035 Views

State and explain the general trend in the first ionisation energy across a period.

First, let's check we understand the concept of the first ionisation energy. The term is defined as 'the energy required to remove a mole of electrons from a mole of gaseous atoms'. That is, for ea...

Answered by Ben M. • Chemistry tutor

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