AS Chemistry
Why does methane have lower boiling point than water?
weaker intermolecular attraction
What is the trend of solubility of group 2 sulfates?
decreases down the group
pale blue ppt
What is the reagent required to make acyl chloride from carboxylic acid?
SOCl2, PCl5 and PCl3
What is the most popular baby boy's name in NZ 2017?
Oliver
Which hybridisation of orbital will Carbon in ethanol have?
sp3
Which electrode is used in standard hydrogen electrode?
Platinum
What is needed for a ligand to form a dative bond?
lone pair
Where is the second substituted group added on a phenol?
2,4 and 6 Carbon
In which year was Treaty of Waitangi signed?
1840
What is a weak acid?
Acid which partially dissociates in water.
What is the equation for gibbs free energy?
Change in enthalpy- Temp X Change in entropy
What is the shape of the complex ion cis[Ni(CN)4]2-?
Square planar
Why is amino acid called zwitter ion?
Which animal has the longest spine?
Blue whale
What are the two products formed when carbon monoxide and nitrogen oxide in the catalytic converter?
Carbon dioxide and nitrogen gas
What is the equation for change in entropy of the surrounding?
-Change in enthalpy/Temperature
What causes complex ion to have various colours?
non-degenerate energy levels
What is the link found in non-solvent based adhesives ?
Si-O-Si link
What is the date for A2 Chemistry paper 4?
19th October
What are the three products formed when chlorine reacts with cold alkali?
NaCl, NaClO and water
A--> B
B + C --> D
IF the second step is rate limiting step, what is the rate law?
RATE= K[A][C]
How many ammonia molecules replace water in the copper-water complex ion when excess ammonia is added to copper sulfate solution?
4
What is the reagent needed to make amine from amide?
LiAlH4 in dry ether
Who was NZ's first prime minister?
Jenny Shipley