Top answers

Chemistry
A Level

How does hydrogen bonding work?

Hydrogen bonding is a relatively strong inter-molecular force, caused by strong dipole-dipole interactions between an electron-deficient H atom and a lone pair of electrons...

Answered by Anna T. Chemistry tutor
1773 Views

How does acidic buffer work?

Acidic buffer is solution which containing high concentration of weak acid and its conjugate base. Its pH would remain relatively constant when adding small amount of acid or base.i.e. CH3COOH...

Answered by Xin H. Chemistry tutor
1891 Views

Does Mg or Al have the higher first ionisation energy? Explain your answer.

Al has the higher first ionisation energy. Mg electronic configuration is [Ne]3s2 whereas Al configuration is [Ne]3s23p1. To remove the electron from Al, it has to be remo...

Answered by Kathryn R. Chemistry tutor
3119 Views

which element has a lower first ionisation energy, Magnesium or Aluminium?

Ionisation energy is the energy required to remove one electron from an isolated gaseous atom (in its ground state). This generates a cation (ion with a positive charge).
Both Mg and Al are in period...

Answered by Hajra A. Chemistry tutor
3366 Views

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
3929 Views

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