Search our library of Chemistry questions

Top answers

Chemistry

All levels

Explain how the structure of metals allow them to form metallic bonds.

A giant metallic lattice – the crystal lattice of metals consists of regularly arranged ions (NOT atoms) surrounded by a ' delocalised sea of electrons' that form the giant lattice.

The...

Answered by Karishma D. • Chemistry tutor

29384 Views

What factors affect the rate of a reaction?

i) Concentration of reactants, or pressure for gases- As there are more particles in a certain volume, they collide more often so there is a greater chance of successful collisions per unit timeii) Press...

Answered by Alexandra B. • Chemistry tutor

2320 Views

Calculate pH of 0.1M NaOH

pH=14-pOHpOH=-log([OH(-)])NaOH-> Na(+)+OH(-)[NaOH]=[OH(-)]=0.1MpOH=-log(0.1)=1pH=14-1=13

Answered by Laura K. • Chemistry tutor

26465 Views

Write an expression and units for equilibrium constant for this reaction: 2SO2(g)+O2(g)<-->2SO3(g)

Kc=[SO3]^2/([O2][SO2]^2)Units M-molar concentration mol/lM^2/(M*M^2)=1/M=l/mol

Answered by Laura K. • Chemistry tutor

11174 Views

Describe how you test for an aldehyde or ketone and distinguish between the two.

To test for an aldehyde or ketone you would use 2,4-dinitrophenylhydrazine (2,4-DNP). 2,4-DNP mixed with methanol and sulphuric acid is knows as Brady's reagent. If a yellow/orange precipitate is forme...

Answered by Shivali J. • Chemistry tutor

36760 Views