
Consultație CFC

Quiz
•
Chemistry
•
1st Grade
•
Hard
Violeta Barnaciuc
Used 7+ times
FREE Resource
16 questions
Show all answers
1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
După criteriul fizic reacţiile se clasifică în:
Reacţii omogene şi eterogene;
Reacţii rapide și lente;
Reacţii exoterme şi endoterme;
Reacţii de neutralizare şi hidroliză;
Reacții de oxidare și reacții de ardere.
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Pentru o reacție de tipul aA+bB=cC+dD, ce decurge în faza gazoasă, care dintre relaţiile constantei de echilibru sunt incorecte?
a) Kc= Kp(RT) Δn ;
b) Kp= PcC*PdD / PaA *PbB;
c) Kp= Kc(RT) Δn ;
d) Kp= Kx(RT) Δn .
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Considerând reacţia: 2NO2(g ) ⇔ N2O4(g), ΔH = -58,5 kJ/mol. Care afirmaţii sunt corecte?
a) Este o reacţie de dimerizare;
b) Reacţia de formare a N2O4 este favorizată de scăderea temperaturii;
c) Reacţia de dimerizare este o reacţie exotermă;
d) Reacţia de dimerizare este o reacţie endotermă;
e) Reacţia de dimerizare este o reacţie succesivă.
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
............ este un bun solvent pentru foarte mulți compuși organici și anorganici.
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Sistemul de tip ........................ nu schimbă cu mediul extern substanță și energie.
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
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