Ions Flashcards
(7 cards)
1
Q
Acid + base
A
Salt + water
2
Q
Acid + carbonate
A
Salt + water + carbon dioxide
3
Q
Acid + metal
A
Salt + hydrogen
4
Q
Explain van deer waals force
A
Uneven distribution of charge induces a dipole in neighbouring atoms
Symmetrical distribution of charge
Dipole cancel out
5
Q
Why does CBr4 have a higher boiling point than CHBr3
A
CBr has van der waals forces
CHBr has van der waals and dipole dipole
Cbr has more intermolecular forces due to its larger mass
6
Q
Why the value of the standard enthalpy of formation for Na ( l) is not zero
A
Because its in its standard state
7
Q
What is mean bond enthalpy
A
Enthalpy change to break one mole of a covalent bond average across many compounds containing the bond
