Termoķīmiski vienādojumi _pašpārbaudes uzdevumi

Quiz
•
Chemistry
•
10th Grade
•
Hard
Jekaterina Romanenko
Used 2+ times
FREE Resource
6 questions
Show all answers
1.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Lai sadalītu 420 g kalcija karbonāta, izlietoja (uzņēma) 630,15 kJ siltuma.
Aprēķini reakcijas siltumefektu! Atbildi noapaļo ar diviem cipariem aiz komata!
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kurš atbilžu variants apraksta kalcija karbonāta termoķīmisko vienādojumu?
CaCO3 = CaO + CO2
CaCO3 (c) = CaO(c) + CO2 (g)
CaCO3 (c) = CaO(c) + CO2 (g) +150,03kJ
CaCO3 (c) = CaO(c) + CO2 (g) -150,03kJ
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kalcija karbonāta sadalīšanas reakcija ir
eksotermiskā reakcija
endotermiskā reakcija
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Aprēķini siltuma daudzumu, kas izdalās, ja pilnīgi sadeg 8,9 L sērūdeņraža un reakcijas siltumefekts ir 530,4kJ/mol!
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sērūdeņraža termoķīmiskais vienādojums ir
H2S + O2 = 2S + H2O
2H2S + O2 = 2S + 2H2O +106,08 kJ
2H2S + O2 = 2S + 2H2O
2H2S + O2 = 2S + 2H2O -106,08 kJ
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sērūdeņraža degšanas process ir
endotermiskā reakcija
eksotermiskā reakcija
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