1.2: Chapter 12 (Solutions) (10%) ) which one of the following compounds is leas

Question

1.2: Chapter 12 (Solutions) (10%) ) which one of the following compounds is least soluble in water (H2O)? b) ethanol (CH3CH2OH) 1) a) methanol (CH3OH) c) 1-propanol (CH3CH2CH2OH) d) 1-butanol (CH3CH2CH2CH2OH) e) 1-pentanol (CH3CH2CH2CH2CH2OH) Z) (10%) Choose the aqueous solution with the lowest vapor pressure. These are all solutions of non-volatile solutes (one of solutes is ionic). a) 0.50 m C3H803 b) 0.50 m C2H602 c) 0.50 m C6H1206 d) 0.50 m C12H22011 e) 0.50 m NaCI 3: Chapter 13 (Kinetics) 3) (10%) Give the characteristic of a second order reaction having only one reactant. a) The rate of the reaction is not proportional to the concentration of the reactant. b) The rate of the reaction is proportional to the square of the concentration of the reactant. c) The rate of the reaction is proportional to the square root of the concentration of the reactant d) The rate of the reaction is proportional to the natural logarithm of the concentration of the reactan e) The rate of the reaction is directly proportional to the concentration of the reactant 4 5: Chapter 14 (Equilibrium) 4) (10%) Give the direction of the reaction, if K

Explanation / Answer

1] ANswer is e --> 1 pentanol

due to the presence of long hydrocarbon it is less soluble compared to others

H2O is polar and hydrocarbon is non polar ...they repel each other

2] Answer is e --> 0.5 m NaCl

NaCl can dissociate to Na+ and Cl- in aqueous solution

delta Tb = i*kf*m

Tb --> elevation in boiling point

kf and m are same to all

i =number of particles =2 for NaCl

for all others it is 1

lower pressure means higher boiling point

3] Answer is b

Rate = k [Reactant]^2

4] Answer is b

if K <<1 ---> the reverse reaction is slightly favoured it mean mixture contains more amount of reactants

5] Answer is d

Keq = [H2]^3 [N2] / [NH3]^2

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.