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33. Consider the following reaction : CO(g)+2H 2 (g) CH 3 OH(liq.) Given : Delta f G^ (CO)=-137 kJ.mol^ -1 , Delta f G^ (CH 3 OH)=-166 kJ.mol^ -1 Calculate Delta_{r}*G at 25 degrees * C for the following pressures : P(CO) = 5 atm and P(H_{2}) = 3atm .
Carbonic acid ionizes in water to produce hydronium and bicarbonate ions. It can also decompose into carbon dioxide and water. With this information, explain why drinking carbonated drinks, like soft drink, results in burping.
Draw the Lewis structures of the following ions giving all the steps.
(i) S2
2- (ii) OCl- (iii) CN
A cardinal flies east for 2.9 s in a horizontal plane
for a distance of 22 m from a fence post to a bush.
It then flies north another 11 m to a bird feeder
for 1.5 s. T/I
(a) Calculate the total distance travelled.
(b) Calculate the cardinal’s average speed.
(c) Calculate the cardinal’s average velocity.
Acetone, C3H6, is the main ingredient of nail polish remover. A solution is made up
by adding 35.OmL of acetone (d=0.790g/mL) to 50.0mL of ethyl alcohol, C2H60
(d=0.789g/mL). Assuming volumes are additive, calculate (a) the mass percent of
acetone in the solution. (b) the volume percent of ethyl alcohol in the solution. (c) the
mole fraction of acetone in the solution.
Calculate the gross calorific value of coal
having the following composition: C= 80%, H = 85-10-3%, N=1% and ash = 7% using Dulong's formula
In a titration, you found that 50.0ml HCl solution requires 25.00ml of 1.00M NaOH. What is the concentration of the hydrochloric acid solution?
Define equilibrium constant and for the following reaction
2NH3(g) ⇌ 2N2(g) +3H2 (g)
i. Write the expression for Kc.
ii. Relate Kc to Kp, and
iii. Relate Kc
to Kx
Reaction of Br2 and Fe with toluene (methylbenzene) can lead to one to more of three substitution products. Show the structure of each.
Write the products from the reaction of the following reagents with p-xylene (p-dimethylbenzene).
A. Br2 and Fe
B. HNO3 and H2SO4
C. SO3 and H2SO4
