Top answers

What is meant by the term amphoteric? and give an example of a reaction using NaOH that could be used to distinguish between a solution of amphoteric AlCl3 and non-amphoteric MgCl2.

The phrase amphoteric describes a compound that reacts with both acids and bases. NaOH can react with both AlCl 3 and MgCl 2 to give a white precipitate but the addition of excess NaOH causes the amphoteric ...
LL
Answered by Lois L. • Chemistry tutor
15362 Views

Which of Na+ and Mg2+ is the smaller ion. Explain your answer. (2 marks)

Mg2+ is the smaller ion. (1 mark) Mg2+ has a larger nuclear charge than Na+ and has the same number of electrons. (1 mark) Further explaination: Magnesium is further along the period than sodium is which mea...
JH
Answered by Joseph H. • Chemistry tutor
9180 Views

(See word doc for complete info) An experiment is carried out whereby the decomposition of hydrogen iodide is observed. Given the equilibrium compositions of each species, calculate the initial mass of hydrogen iodide.

(See word doc for step by step solution)
AL
Answered by Anil L. • Chemistry tutor
2828 Views

What is the definition of 'first ionisation energy'?

The first ionisation energy is the energy required to remove one mole of electrons from one mole of gaseous atoms from its valence shell.
SB
Answered by Shreyas B. • Chemistry tutor
21702 Views

Describe, with the aid of diagrams, what hydrogen bonding is in water.

Hydrogen bonding is a strong dipole-dipole attraction between a lone pair of electrons on a highly electronegative atom, such as oxygen or nitrogen, and a hydrogen atom on another molecule. In the case of wa...
AH
Answered by Anna H. • Chemistry tutor
9596 Views