Chemistry is easy

Chemistry is easy

2nd Grade

10 Qs

quiz-placeholder

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Chemistry is easy

Chemistry is easy

Assessment

Quiz

Chemistry

2nd Grade

Medium

Created by

Dorothy Siringoringo

Used 11+ times

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

Boru apakah Bu Dorothy

Siregar

Siringoringo

Simamora

Situmorang

2.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

Cara pemisahan fraksi fraksi minyak bumi dilakukan dengan cara

Destilasi bertingkat

Cracking

Treating

Penyaringan

3.

MULTIPLE CHOICE QUESTION

45 sec • 5 pts

Cara mengetahui kualitas bensin adalah

Bilangan oktan

Bilangan heptana

Bilangan dekana

Bilangan butan

4.

MULTIPLE CHOICE QUESTION

3 mins • 5 pts

1.    ∆H reaksi C2H2 →2C +H2 berdasarkan persamaan termokimia berikut:

C +O2 →CO2                                 ∆H= -A kJ/mol

H2 + 1/2O2 →H2O                         ∆H=-B kJ/mol

C2H2 +5/2O2 →2CO2 +H2O            ∆H = -CkJ/mol

Adalah....

2B+C-A

A-2B-C

A+2B+C

 2A+B-C

5.

MULTIPLE CHOICE QUESTION

3 mins • 5 pts

2C+2O2 → 2CO2               ∆H=-790kJ

CO +1/2O2 →CO2             ∆H = -98,5kJ

Maka entalpi reaksi: C+1/2O2 →CO

-1970 kJ

-296,5 kJ         

-593 kJ

 593 kJ

6.

MULTIPLE CHOICE QUESTION

2 mins • 5 pts

Diketahui reaksi: 2HCl --> H2 + Cl2 entalpi = +184 kJ, maka perubahan entalpi pada pembentukan 1 mol HCl adalah 

92

82

-92

-82

7.

MULTIPLE CHOICE QUESTION

1 min • 5 pts

Persamaan reaksi termokimia berikut yang merupakan reaksi penguraian standar adalah

H2 + ½ O2→ H2O ∆H = -242 kJ

CO2 → CO + ½O2 ∆H = +283 kJ

LiOH → Li+ + OH- ∆H = -20 kJ

NH3 → 1/2N2+ 3/2 H2 ∆H = +92 kJ

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