Reacții de precipitare
Quiz
•
Chemistry
•
8th Grade
•
Practice Problem
•
Medium
Ianculescu Florina
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10 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Produșii reacției dintre un acid și o bază sunt:
oxid si apă
sare și apă
sare și hidrogen
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Nu se formează precipitat la tratarea unei soluții de NaOH cu:
clorură de sodiu
sulfat de cupru
clorură ferică
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Se formează precipitat la tratarea unei soluții de acid sulfuric cu:
clorură de calciu
clorură de bariu
clorură de natriu
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Se identifică acidul clorhidric cu ajutorul unei soluții de:
azotat de plumb
clorură de argint
azotat de argint
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Se identifică ionii Cu+2 folosind reacția sulfatului de cupru cu:
NaOH
Cu SO4
Cu(OH)2
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Din reacția clorurii ferice cu hidroxidul de natriu rezultă un precipitat:
alb-brânzos
verde
brun
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Carbonații se identifică cu ajutorul reacție cu acidul clorhidric deoarece apare:
eflorescență
efervescență
euforie
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