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Give 2 examples each of oxidation reactions and reduction reactions in daily
life.
Differentiate oxidation reactions from reduction reactions
2. Calculate the ΔHoformethanegas,CH4,producedfromgraphiteandhydrogengasaccording
tothefollowingreaction:C(graphite)+2H2(g)CH4(g)
Data given:
a. C(graphite)+O2(g)CO2(g)
ΔHo=-393.5kJ
b.H2(g)+½O2(g)H2O(l)
ΔHo=-285.8kJ
c.CH4(g)+2O2(g)CO2(g)+2H2O(l)
ΔHo=-890.4kJ
C6H12O6(s)+6O2(g)=6H2O(g) + 6 CO2 (g)
1. What happens to the concentrations of :
a . C6H12O6 and the reaction proceeds ?
b . H2O + CO2 as the reaction proceeds?
2. According to the collision theory , what 3 circumstances are needed for C6H12O6 & O2 to react?
Repeatable entity of a crystal structure is known as
A gas absorbs 32.5 KJ of heat when 18.2 kJ of work was done on it.
The reactant concentration in a second-order reaction was 0.670mol L
after 205 s and 5.00×10−2 mol L after 900 s
. What is the rate constant for this reaction?
The reactant concentration in a first-order reaction was 9.70×10−2mol L
after 25.0 s and 5.70×10−3 mol L after 85.0 s
. What is the rate constant for this reaction?
The composition of PBS is 0.137M NaCl, 0.012M Phosphate, 0.0027M KCl, pH 7.4. Below is the protocol to make 1 liter of 10x concentrate PBS.
Combine the following:
A sample of flammable liquid is placed into an enclosed cylinder which is then fitted with a movable piston. Initially the cylinder contains a volume of 3.70 L. The sample is ignited producing gas and releasing 569.9 J of energy. To what volume will the cylinder expand to if it must expand against a pressure of 816.9 mmHg. Assume all the energy released is converted to work used to push the piston?
