Tugas Pengganti Kuliah Minggu Ke-3

Operasi Teknik Kimia 2 (A dan B)

Ketentuan pengerjaan:

Setiap mahasiswa mengerjakan 2 soal yang terdiri dari 1 soal umum dan 1 soal khusus.

Soal dan hasil pengerjaan harap di-upload via klasiber sebagai pengganti absen minggu ke-3

Batas waktu upload adalah mulai dari hari Kamis, 28 Maret 2013 jam 15 WIB sampai dengan hari

Kamis, 4 April 2013 jam 12 WIB.

Tidak ada toleransi untuk pengumpulan di luar batas waktu upload.

Soal Umum (dikerjakan oleh semua mahasiswa)

The 1993 Environmental Protection Agency (EPA) regulation contains standards for 84 chemicals

and minerals in drinking water. According to the EPA one of the most prevalent of the listed

contaminants is naturally occuring antimony. The maximum contaminant level for antimony and

nickel has been set at 0,006 mg/L and 0,1 mg/L respectively.

A laboratory analysis of your household drinking water shows the antimony concentration to be 4

ppb (parts per billion) and that of nickel to be 60 ppb. Determine if the drinking water is safe with

respect to the antimony and nickel levels.

Assume density of water to be 1,00 g/cm3

Soal Khusus: dikerjakan sesuai aturan berikut:

Soal nomor 1 untuk presensi nomor 1-10

Soal nomor 2 untuk presensi nomor 11-20

Soal nomor 3 untuk presensi nomor 21-30

Soal nomor 4 untuk presensi nomor 31-40

1. Liquified natural gas, LNG, is to be shipped from the Kenai Peninsula in Alaska by an ocean carrier

to a location on Yaquina Bay, Oregon. The molar composition of the commercial LNG is:

Methane, CH4 94,9 % Ethane, C2H6 4 % Propane, C3H8 0,6% Carbon dioxide, CO2 0,5%

Determine

a) weight fraction of methane

b) average molecular weight of the LNG mixture

c) partial pressure of methane when the total pressure on the system is 1,013 x 105 Pa

d) mass fraction of propane in parts per million

2. A natural gas is analyzed as: CO2, 4%; CH4, 77%; C2H6, 5%; and N2, 14%. Determine the following

properties of the gas mixture:

a) mole fraction of C2H6

b) weight fraction of N2

c) average molecular weight of the natural gas mixture

d) partial pressure of each component if the total pressure is 1500 mmHg

3. Air is contained in a 30 m3 container at 400 K and 1,013 x 105 Pa. Determine the following

properties of the gas mixture:

a) mole fraction O2

b) weight of mixture

c) average molecular weight of mixture

d) partial pressure of N2

4. Mixture of gases is analyzed and found to have the following composition: CO2, 12%; CO, 6%; CH4,

27,3%; H2, 9.9%; N2, 44.8%. Determine the following properties of the gas mixture:

a) weight fraction CO

b) average molecular weight of the gas mixture

c) mass fraction of H2 in parts per million

d) partial pressure of CO2 when the total pressure on the system is 1,013 x 105 Pa

Catatan:

Daftar presensi dapat dilihat di lampiran

Materi kuliah minggu ke-3 dapat di-download di klasiber.

LAMPIRAN

PRESENSI OTK 2 A

NO NAMA MAHASISWA

1 SOFIA ZULAIKHA

2 ANDI WIBOWO

3 EKA JULIANA PUTERI

4 KHAIRUL HILMI

5 RIDHO EDISTYO RAMADHAN

6 BIMO SETIONO

7 RACHMAT BAYU NUGRAHA

8 AURORA FALAH

9 LAILY ISNA RAMADHANI

10 MUHAMMAD HAEKAL ARKAN

11 HENDRO EKOSARWONO

12 AHMAD PRASETIO

13 ENDHIKA YASA PRADIKTA

14 KHOIRUZZAKI AL HUSSEIN P

15 BAGUS ARDHIANTORO

16 SUCHI LESTARI

17 DIAN AYUMIA

18 ARI AHMAD IZZAH

19 SONIA FALAH BAHARIVA

20 NAMLI HABI HURAIRA

21 WAHYU HIDAYAT

22 MOCHAMMAD FEBRILIANTSYAH

23 ROHMAN WIDODO MULYO

24 ANDRY SEPTIAN

25 MUH. YUSUP SUPYANDI NUR OSRIA

26 CHASNA ATIKA

27 MUZAINI

PRESENSI OTK 2B

NO NAMA MAHASISWA

1 WENDY ARNNOU DAMARRA

2 NOVIA NUR FITRIANA SARI

3 ARDENIA VANESSA

4 PRASDA AFRIN HAMBARA

5 SUSANA AYU PRISTIANTI

6 ADI YUSUF DARMAWAN

7 IFFA NURSYIDA ROCHANDINI

8 ANDRYAN SETYA RAMADHAN

9 KHAIRUN NISA

10 DEWI PURNAMA SARI

11 AYU PRATIWI

12 NINDITA NOVITASARI

13 RIZKA LESTARI

14 MARISAH EL MAWADDAH

15 AMANDA HANNA AFIFAH

16 NANDIA YOSHI INTAN NAUMI

17 M. KHOIRUL UMMAM

18 RIZAL BASYIR

19 BUDI HARTO

20 DADI HARYOSIDHARTO S

21 SUMRINGAH MIGUNANI

22 SANTI RAHMA SARI

23 RAMA WIRAWAN

24 HAICE IRMA

25 SITI ROHANA

26 WINDIA HANIFAH

27 AGUS KURNIAWAN

28 HILDA ARTA APRILISAH

29 ZIADATURROHMAH

30 TANTRA DIWA LARASATI

31 DENNY NOVIYANTO

32 TARLIM

33 RIA ARIANI

34 ANGGI PERMATA SARI

35 RETNO ELAKADESCI

36 MATSWA AKRIMI

37 FIRDA MAHIRA ALFIATA CHUSNA

38 ROFIATUN NURFAIZA

39 AYATULLAH