Equilibrium
What is the definition of a reversible reaction?
It has forward and reverse reactions
What is the product of haber process?
ammonia?
What is one use of water at home?
Washing
Cooking
What is the toxic gas produced by incomplete combustion?
Carbon Monoxide
What is Mr Kim's favourite colour?
Blue
What is the definition of a dynamic equilbrium?
rate forward reaction = rate of reverse reaction
What is one use of sulfuric acid?
Fertilisers, paints, pigments, dyestuffs, chemical manufacture, soaps and detergentsFibres
What is the colour change of cobalt chloride when water is present?
blue to pink
What is greenhouse effect?
trapping of heat by greenhouse gases which increases the temperature of the planet
What is Tuesday in Te reo Maori?
Ratu
What is the affect of catalyst on equilibrium?
No yield
What is the catalyst of haber process?
iron
What are the three special features of water?
1.High melting and boiling point
2.Less dense when in ice form
3.Universal solvent
What makes noble gases inert?
Full valence shell
Who was the last air bender in the show "Avatar the last air bender"?
Aang
Fe3+(aq) + SCNˉ (aq) ⇌ [FeSCN]2+ (aq)
oragne blood red
The solution becomes darker blood red when temperature is decreased.
What does this observation tell us about the reaction?
Forward reaction is exothermic
Reverse reaction is endothermic
Why is 400-450C used for haber process?
Compromise between rate and yield.
What are the two main features of water purification process?
Filtration and chlorination
Explain galvanising
the zinc atoms react before the iron
Who was the second female prime minister of NZ?
Helen Clark
CH3COOH + H2O ⇌ CH3COO- + H3O+
ΔH= negative
What changes can be made to make the solution more acidic?
Decrease temperature
Increase the concentration of reactants
What is the formula of oleum?
H2S2O7
What is the percentage of water in human body?
75%
What is the nitrogen containing products of catalytic converter?
Nitrogen gas
On what floor is the main observation deck on Sky tower in Auckland?
Level 51