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A 20cm³ sample of lithium hydroxide solution of unknown concentration is neutralised by 12.25cm³ of 0.15mol/dm³ of sulfuric acid. Calculate the concentration of the lithium hydroxide solution.

0.184mol/dm³

Answered by Sithhipratha A. • Chemistry tutor

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Hydrogen chloride (HCl) has a melting point of -114.2 °C. Sodium chloride (NaCl) has a melting point of 801 °C. Explain in terms of structure and bonding why these substances have such different melting points?

Hydrogen chloride has a simple molecular structure. The atoms within the molecule are held together by strong covalent bonds. However, for simple covalent molecules to melt only the weak intermolecular f...

Answered by Alexander J. • Chemistry tutor

26641 Views

How do you determine the shape of molecule?

Molecular shape is based on VSEPR Theory which states that electrons in lone pairs repel other electrons in lone pairs the most. Electrons in lone pairs repel electrons in bonding pairs less and electrons...

Answered by Daniel S. • Chemistry tutor

5265 Views

What is meant by a strong acid?

When the acid is completely or fully ionised in aqueous solution or if it is dissolved in water.

Answered by Isabelle L. • Chemistry tutor

1784 Views

What does ‘aromatic’ mean?

In A Level Chemistry, the word aromatic means a molecule’s structure contains at least one cyclic ring which has a delocalised pi electron cloud above and below it. This occurs from unbonded P orbital ele...

Answered by Sam L. • Chemistry tutor

2387 Views