
Cinetica chimica
Quiz
•
Chemistry
•
1st Grade
•
Practice Problem
•
Medium
Elena Sunca
Used 3+ times
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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Prin cresterea suprafetei de contact dintre reactanti intr-o reactie chimica
viteza nu se schimba
viteza creste
viteza scade
reactia nu are loc
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In graficul alaturat , diferenta de inaltime Ea corespunde:
pt energia de activare
pentru viteza de reactie
energia dezvoltată de reacșie
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
prin creșterea temperaturii, viteza de reacție :
întotdeauna crește
mereu scade
poate crește
poate scădea
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
În 10secunde se consumă 30 moli de Mg în reacția :
Mg + 2HCl -> MgCl2 + H2
v= 3o moli/s
v= 3 moli/s
v=0
v= 3 moli/ h
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Prin creșterea temperaturii viteza de reacție crește deoarece
crește energia tututror particulelor
scade Ea
crește viteza particulelor reactante
creșterea temperaturii nu influențează viteza de reacșie
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Influența temperaturii asupra vitezei de reacție se regăsește în :
concentrația reactanților
în produșii de reacție
constanta de viteză
nu se regăsește
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
În care situație viteza de reacție este mai mare, când reactanții sunt:
sub formă de pulbere
în soluție
nu contează
sub formă de cristale
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