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What 2 reagents are required to form NO2+ (state conditions)? Write an equation for this reaction.

Concentrated sulphuric acid (H₂SO₄) and concentrated nitric acid (HNO₃).H₂SO₄ + HNO₃ -> HSO₄^- + H₂NO

Answered by Eleanor C. • Chemistry tutor

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How can potassium form an ionic compound with sulphur?

An ionic compound is formed from positive and negative ions which have balanced and opposite charges.K has 1 electron in it's outer shell. S has 6 electrons in it's outer shell. S needs 2 more electrons t...

Answered by Molly T. • Chemistry tutor

4069 Views

Explain why diamond cannot conduct electricity but graphite can.

In the atomic structure of diamond, each carbon is bonded to four other carbons using all of its outer electrons, leaving none free to carry a charge. In graphite not all of the electrons are used in bond...

Answered by Lucy B. • Chemistry tutor

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The rate of the reaction between magnesium ribbon and hydrochloric acid can be increased by increasing the concentration of the acid. State two other ways of increasing the rate of this reaction

Increase the surface area of the magnesium, for example by using a powder.Increase the temperature of the reaction.Add a catalyst

Answered by Aleks H. • Chemistry tutor

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BeCl2 has a linear shape with a bond angle of 180 degrees, where as H2O has a bent shape with a bond angle of 104.5 degrees. Explain why these molecules have different shapes despite having the same general formula of AB2.

BeCl2 contains 2 bonding pairs of electrons which arrange themselves as far away as possible to minimise the electron repulsion between them, giving a bond angle of 180 degrees and a linear shape. H2O als...

Answered by Sam R. • Chemistry tutor

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