Criterion of course of chemical process at entropy and volume constancy is

A) DU;

B) DH;

C) DG;

D) DA;

E) DS;

 

183. Criterion of direction of chemical process at P=const, S=const is …

A) DH;

B) DA;

C) DG;

D) DU;

E) DS;

184. Criterion of direction of chemical process at V=const, T=const is …

A) DA;

B) DU;

C) DS;

D) DG;

E) DH;

 

185. At what values of thermodynamic potentials process goes spontaneously:

A) ΔG<0

B) ΔG>0

C) ΔH>0

D) ΔH<0

E) ΔA>0

 

186. Criterion of direction of chemical process at P=const, T=const is …

A) DG;

B) DA;

C) DU;

D) DS;

E) DH

 

187. Energy of Gibbs in spontaneous process …

A) Decreases;

B) Increases;

C) Remains on the same place;

D) All answers are correct;

E) All answers are not correct;

 

188. Indicate changes of Gibbs's energy:

A) DG=DH-TDS;

B) DG=-DH×TDS;

C) DG=DH+TDS;

D) DG=DH-DU;

E) DG=DH / TDS;

 

189. Mendeleyev-Klayperon equation for 1 mole ideal gas:

190. Sedimentation, colour changing at adding of electrolyte to colloid are signs …

A) Coagulation;

B) Flocculation;

C) Stabilization;

D) Dialysis;

E) Osmosis

 

191. Passing through disperse system, light is absorbed, reflected or dissipated by particles. Dispersion of light most typical for systems …

A) colloid;

B) harddispers;

C) molecular;

D) ionic;

E) macroheterogeneous.

192. A coagulation rule: among organic ions coagulate action increases with increase... abilities.

A) sorb;

B) diffuse;

C) absorb;

D) electro kinetic;

E) electro foretic

 

The dispersive environment - gas, a disperse phase - a liquid.

A) Fog;

B) emulsion;

C) suspension;

D) solid sol;

E) smoke;

 

The dispersive environment - gas, a disperse phase – solid substance.

A) smoke

B) solid sol;

C) solid foam

D) suspension

E) fog

 

The dispersive environment - liquid, a disperse phase - a liquid.

A) emulsion;

B) sol;

C) fog;

D) smoke;

E) suspension;

 

The dispersive environment - liquid, a disperse phase - solid substance.

A) suspension;

B) smoke;

C) dust;

D) fog;

E) emulsion;

 

The dispersive environment -solid, a disperse phase - solid.

A) solid sol;

B) suspension;

C) smoke;

D) dust;

E) fog;

 

The dispersive environment - liquid, a disperse phase - solid.

A) without name;

B) sol;

C) smoke;

D) D)fog;

E) E)suspension;

 

The dispersive environment - gas, a disperse phase - liquid.

A) without name;

B) fog;

C) smoke;

D) dust;

E) sol;

The dispersive environment - solid, a disperse phase - gas.

A) solid foam;

B) smoke;

C) dust;

D) fog;

E) suspension;

 

The dispersive environment - liquid, a disperse phase - gas.

A) foam;

B) smoke;

C) dust;

D) fog;

E) sol;

 

202. Faraday and Tindal have described the phenomenon observed at missing of light through colloid solution, named...

A) Opalescence,

B) Extinction,

C) Diffraction,

D) Reflexion,

E) Absorption

 

203. Faraday and Tindal have described the phenomenon observed at missing of light through colloid solution, named...

A) Opalescence,

B) Extinction,

C) Diffraction,

D) Reflexion,

E) Absorption

 

204. The system consisting of several phases is called:

A) Heterogeneous,

B) homogeneous,

C) uniform,

D) phase, u

E) nicomponent

 

205. The solid substance on which surface there is an adsorption, is …

A) adsorbent;

B) adsorbate;

C) adsorbtive;

D) sorbat;

E) sorbent;

 

206. Spontaneous transition of substance from volume of environment in a phase is named...

A) Adsorption;

B) hemosorption;

C) desorption;

D) sorption;

E) Absorption;

 

207. Absorption of substance from the environment by volume of a phase of disperse system name …

A) Absorption,

B) Adsorption,

C) hemosorption,

D) desorption,

E) sorption

 

208. Unilateral diffusion of the dispersive environment in porous systems is called:

A) osmosis,

B) electrophoresis,

C) Dialysis,

D) electroocmosis,

E) Electrodialysis.

 

Directed moving of particles of disperse phase under the influence of the enclosed potential difference.

A) Electrophoresis;

B) Electrodialysis,

C) Electroosmosis;

D) Dialysis;

E) Electrolysis

 

210. The phenomena of electrophoresis and electroosmosis is... in a science and the technician.

A) Useful,

B) Harmful,

C) Indifferent,

D) Negative,

E) useless

 

The general formula of alkanes

A) C_nH_2n+2

В) C_nH_2n

С) C_nH_2n-2

D) C_nH_2n-6

Е) C_nH_2n-4

 

The general formula of alkenes

A) C_nH_2n

В) C_nH_2n+2

С) C_nH_2n-2

D) C_nH_2n-6

Е)C_nH_2n-4

 

The general formula of alkadienes

A) C_nH_2n-2

В) C_nH_2n-6

С) C_nH_2n

D) C_nH_2n-4

Е) C_nH_2n+2