tugas ddka pertemuan 5 amaliah berly sri

Tugas Dasar-dasar Kimia Analisa Pertemuan 5

Kelompok 7 : Amaliah Agustina

Berly Dwikaryani

Sri Dwiwati

No. Pertanyaan Jawaban

1. Tuliskanlah reaksi reaksi kation No

1 sd 6!

1. Perak (Ag+)a. AgNO3(aq) + HCl(aq) AgCl(s) + HNO3(aq)

AgCl(s) + NH4OH(aq) Ag(OH)(aq) + NH4Cl(aq)

b. AgNO3(aq) + HCOOH(aq) HCOOAg(s) + HNO3(aq)

c. AgNO3(aq) + KI(aq) AgI(s) + KNO3(aq)

d. 2AgNO3(aq) + K2CrO4(aq) Ag2CrO4(s) + 2KNO3(aq)

2. Raksa I (Hg+)a. Hg(NO3)2(aq) + 2HCl(aq) Hg2Cl2(s) + 2HNO3(aq)

b. 2HgNO3(aq) + Cu(s) Cu(NO3)2(aq) + 2Hg(s)

2HgNO3(aq) + Zn(s) Zn(NO3)2(aq) + 2Hg(s)

3. Raksa II (Hg+)a. HgCl2(aq) + Na2S(aq) HgS(s) + 2NaCl(aq)

b. HgCl2(aq) + 2NaOH(aq) HgO(s) + H2O(l) + 2NaCl(aq)

c. HgCl2(aq) + Zn(s) ZnCl2(aq) + Hg(s)

HgCl2(aq) + Cu(s) CuCl2(aq) + Hg(s)

4. Timbal Nitrat (Pb2+)a. Pb(NO3)2(aq) + 2HCl(aq) PbCl2(s) + 2HNO3(aq)

b. Pb(NO3)2(aq) + K2CrO4(aq) PbCrO4(s) + 2KNO3(aq)

c. Pb(NO3)2(aq) + H2SO4(aq) PbSO4(s) + 2HNO3(aq)

d. Pb(NO3)2(aq) + 2KI(aq) PbI2(s) + 2KNO3(aq)

5. Bismut (Bi3+)a. 2Bi(NO3)3(aq) + 3NaCO3(aq) Bi2(CO3)3(s) + 6NaNO3(aq)

b. Bi(NO3)3(aq) + 3NaOH(aq) Bi(OH)3(s) + 3NaNO3(aq)

c. 2Bi(NO3)3(aq) + 3Zn(s) 3Zn(NO3)2(s) + 2Bi(s)

2Bi(NO3)3(aq) + 3Cu(aq) 3Cu(NO3)2(aq) + 2Bi(s)

d. 2Bi(NO3)3(aq) + 3K2Cr2O7 Bi2(Cr2O7)3(s) + 6KNO3(aq)

6. Tembaga II (Cu2+)a. CuSO4(aq) + 2NaOH(aq) Cu(OH)2(s) + Na2SO4(aq)

CuSO4(aq) + H2C4H4O6(aq) 2NaOH(aq) + H2SO4(aq) + 2H2O(aq) + Cu(Na)2

b. CuSO4(aq) + 2NH4(aq) Cu(OH)2(s) + (NH4)2SO4(aq)

c. CuSO4(aq) + 2KI(aq) CuI2(s) + K2SO4(aq)

2. Tuliskanlah reaksi reaksi kation No

7 sd 12!

1. Cadnium nitrat (Cd2+) a. (CH3COO)2 Cd (aq) + 2NaOH (aq) → 2CH3COONa (aq) + Cd(OH)2 (s)

(bening TB) (bening) (bening) (TB)

b. (CH3COO)2 Cd (aq) + 2NH4OH (aq) → 2CH3COONH4 (aq) + Cd(OH)2 (s)

(bening TB) (putih)c. (CH3COO)2 Cd (aq) + K2CO3 (aq) → CdCO3 (s) + 2CH3COOK (aq)

(bening TB) (putih) (putih keruh)

8. Arsen III (As3+), Arsen V (As5+)a. As2O5 (aq) + 10HNO3 (aq) → 2As(NO3)5 (aq) +3H2O (l)

As2O5 (aq) + 10HNO3 (aq) + 5(NH4)2MoO4 (aq) → As2(MoO4)5 (aq) + 10NH4(NO +5H2O(l)

(kunning)

b. As2O3 (aq) + 3Na2S (aq) → As2S3 (s) + 3Na2O (aq)

(kuning) c. CHCl3 (aq) + As2O5 (aq) + 10HCl (aq) + 10 KI (aq) → 2AsI3 (aq) +10 KCl (aq) +CHCl3(aq) +

2I2 (s) + 5H2O(l)

d. As2O5 (aq) + 6Zn (s) + 6H2SO4 (aq) → 2AsH3(g) + ZnSO4 (aq) + 3H2O(l)

(bening) (abu-abu) (bening TB) AsH3 (g) + 6AgNO3 (aq) + 3H2O (aq) → 6Ag(s) + 6HNO3(aq) + H3AsO3 (aq)

(coklat)9. Antimon (III), Antimon (V)

a.2SbCl3 (aq) + 3Na2S (aq) → Sb2S3 (s) + 6NaCl (aq)

(merah jingga)

b. SbCl3 (aq) + 2KI (aq) + HCl (aq) +CHCl3 (aq) → SbCl3 (s) + I2 (aq) + 2KCl(aq)+ HCl (aq) + CHCl3 (aq)

c. 2SbCl5 (aq) + 5Zn (s) → 2Sb (s) + 5ZnCl2 (aq)

10. Timah II (Sn2+), Timah IV (Sn4+)a. SnCl2 (aq) + 2NaOH (aq) → Sn(OH)2 (s) + 2NaCl (aq)

(putih susu) (bening TB) (putih susu) (bening TB) b. SnCl2 (aq) + 2 HgCl2 (aq) → SnCl4 (aq) + Hg2CL2 (s)

(bening TB) (putih susu) (bening) c. SnCl4 (aq) + 2Zn(OH)2 (aq) → Sn(OH)2 (s) + 2ZnCl2 (aq)

11. Aluminium (Al3+)a. AlCl3 (aq) + 3NH4OH (aq) → Al(OH)3 (s) + 3NH4Cl (aq)

(bening TB) (bening TB) (putih) (bening TB)b. AlCl3 (aq) + 3CH3COONa (aq) → Al(CH3COO)3 (s) + 3NaCl (aq)

(bening TB) (putih)12. Krom (Cr3+)

a. CrCl3 (aq) + 3NH4OH (aq) → Cr(OH)3 (s) + 3NH4Cl (aq)

(hijau tua) (bening TB) (hijau) (hijau keruh)b. CrCl3(aq) + 4NaOH ( aq) → NaCr(OH)4 (aq) + 3 NaCl (aq)

(bening TB) (larutan hijau)

3. Tuliskanlah reaksi reaksi anion no 1 1. Klorida (Cl-)

2NaCl (aq) +H2SO4(aq) → Na2SO4(s) ↓ + 2HCl(aq)

2Na+ + 2Cl- + 2H+ + SO42- → Na2SO4 + 2H+ + 2Cl-

2HCl(aq) + H2SO4(aq) → Cl2(g) ↑ + SO2(g) ↑ + 2H2O(I)

NaCl(aq) + AgNO3(aq) → NaNO3(aq) + AgCl(s)↓Na+ + Cl- + Ag+ + NO3

- → Na+ + NO3- + AgCl↓

AgCl(s)↓ + 2NH4OH(aq) → [Ag(NH3)2]Cl(aq) + 2H2O(I)

10NaCl(aq) + 8H2SO4(aq) + 2KMnO4(aq) → K2SO4(s)↓+ 2MnSO4(aq)+5NaSO4(aq)+8H2O(I)+5Cl2(g)↑4. Tuliskanlah reaksi reaksi anion no 2 Bromida (Br-)

2KBr(aq) + H2SO4(aq) K2SO4(aq) + 2HBr(aq)

2HBr(aq) + H2SO4(aq) Br2(g) +SO2(g) + 2H2O(l)

2KBr(aq) + 2H2SO4(aq) K2SO4(aq) + Br2(g) + SO2(g) + 2H2O(l)

KBr(aq) + HNO3(aq) HBr(s) + KNO3(aq)

K+ + Br- + H+ +NO3 - HBr(s) + K+ + NO3 –

HBr(s) + 2NH4OH(aq) [H(NH3)2]Br(aq) + 2H2O(l)

KBr(aq) + Cl2(aq) 2KCl(aq) + Br2(g)

K + + Br- + 2Cl- 2K + + 2Cl- +2Br-

5. Tuliskanlah reaksi reaksi anion no 3 Iodida (I-)2Kl (aq)+ H2SO4(aq) K2SO4(aq) + 2HI (g)

2k+ + 2I- + 2H+ + SO4 2- 2k+ + SO4

2- +2HI2HI(g) )+ H2SO4(aq) I2(g) + SO2(g) + 2H2O(l)

Kl (aq)+ HNO3(aq) KNO3(aq) + HI(s)

HI(s) + 2NH4OH [H(NH3)2 ] (aq) + 2H2O(l)

6. Tuliskanlah reaksi reaksi anion no 4 Timbal Nitrat (Pb 2+)

Pb(NO3)2(aq)+ 2HCl(aq) PbCl2(s) + 2HNO3(aq)

Pb2+ + 2NO3- + 2H+ + 2Cl- Pb2+ +2Cl- + 2H+ + 2HNO3

-

Pb(NO3)2(aq) + K2CrO4(aq) PbCrO4(aq) + 2KNO3(aq)

2PbCrO4(s) + 2HNO3(aq) Pb(NO3)2(aq) + K2CrO7(aq) + H2O(aq)

Pb(NO3)2(aq) + 2H2SO4(aq) PbSO4(s) + 2HNO3(aq)

Pb2+ + 2NO3- + 2H+ + SO42- Pb2++ SO4

2-+ 2H+ + 2NO3-

Pb(NO3)2(aq) + 2KI(aq) PbI2(s) + 2KNO3(aq)

Pb2+ + 2NO3- + 2K+ + 2I- Pb2++ 2I- + 2K+ + 2NO3

-

7. Tuliskanlah reaksi reaksi anion no 5 Bismut (BI3+)2Bi(NO3)3(aq)+ 3Na2CO3(aq) Bi(CO3)3(s) + 6 NaNO3(aq)

2 Bi3+ + 6 NO3- + 6 Na+ + 3 CO3

2-2 Bi3+ + 3 CO32 + 6 Na+ + 6 NO3

-

Bi(NO3)3(aq) + 3 NaOH(aq) Bi(OH)3(s) + 3 NaNO3(aq)

Bi3+ + 3 NO3- + 3 Na+ + 3 OH- Bi3+ + 3 OH- + 3 Na+ + 3 NO3

-

2 Bi(NO3)3(aq) + 3 K2CrO7(aq)

Bi2(Cr2O7)3(s) + 6 KNO3(aq)

Bi(NO3)3(aq) + 3 Cu(s) 2 Bi(s) + 3 Cu(NO3)2(aq)

2 Bi(NO3)3(aq)+ 3 K2CrO7(aq) Bi2(Cr2O7)3(s)+ 6 KNO3(aq)

8. Tuliskanlah reaksi reaksi anion no 6 Tembaga II (Cu 2+)CuSO4(aq) + 2 NaOH(aq) Cu(OH)2(s) + Na2SO4

CuSO4 (aq) + H2C4H6 (aq) H2SO4 (aq)+ 2H2O (aq) + Cu(Na2(COOCHO)2) (aq)

CuSO 4(aq) + 3NH4OH(aq) (Cu(NH3)4SO 4 (aq) + 4 H2O (aq)

2 CuSO4(aq) + 5 KI(aq) 2 CuI (s) + 2K2SO4(aq) + KI 3(aq)

KI 3(aq) + 2Na2S2O3(aq) 2NaI (s) + KI(aq) + Na2S4O6(aq)

9. Tuliskanlah reaksi reaksi anion no 7 Nitrat (NO3)

2NaNO3 (aq) + 8FeSO (aq) + (4H2SO4 (aq) Na2SO4 (aq) + 4H2 (aq)

3Fe2(SO4)3 (aq) + 2Fe(NO)SO4 (aq)

2NaNO3 (aq) + H2SO4 (aq) 2HNO3 (aq) + Na2SO4 (aq)

2HNO3 (aq) + H2O (aq) + 2NO (g) + 3On

2NaNO3 (aq) + H2SO4 (aq) → 2HNO3 (aq) + Na2SO4 (aq)

2HNO3 (aq) → H2O (aq) + 2NO (g) + 3On

10. Tuliskanlah reaksi reaksi anion no 8 Sulfida (S2-)Na2S (aq) + H2SO4 (aq) → Na2SO4 (aq) + H2S (aq)

H2S (aq) + Pb(CH3COO)2 → PbS (aq) + 2CH3COOH (aq)

11. Tuliskanlah reaksi reaksi anion no 9 Sulfit (SO32-)

Na2SO3 (aq) + S(s) → Na2S2O3 (aq)

Na2SO3 (aq) + I2 (aq) + H2O (aq) → Na2SO4 (aq) + 2HI

12. Tuliskanlah reaksi reaksi anion no

10.

Sulfat (SO42-)

Ba(NO3)2 (aq) + Na2SO4 (aq) → BaSO4 (s) ↓ 2NaNO3 (aq)

BaSO4 (s) ↓ + 2HCl (aq) → BaCl2 (aq) + H2SO4 (aq)

Ba2+ + SO2- + 2H+ + Cl- → Ba2+ + Cl2- + 2H+ + SO4

2-


11.

Thiosulfat (S2O32-)

Na2S2O3 (aq) + H2SO4 (aq) → H2S2O3 (aq) + Na2SO4 (aq)

Na2S2O3 (aq) + H2SO4 (aq) → SO2 ↑ + S↓+ H2O + Na2SO4 (aq)

2Na+ + S2O32- + 2H+ + SO4

2- → SO2 ↑ + S↓ + H2O + 2Na+ + SO42-

Na2S2O3 (aq) + I2 (aq) → Na2S4O6 (aq) + 2NaI (aq)

4Na+ + 2S2O32- + I2

- → 2Na+ + 2I- + 2Na+ + S4O62-


12.

Karbonat (CO32-)

Na2CO3(aq) + H2SO4(aq) → CO2(g) ↑ + H2O(l) + Na2SO4(aq) 2Na+ + CO3

2- + 2H+ + SO42- → CO2 ↑ + H2O(l) + 2Na+ + SO4

2-


13.

Arsenit (AsO33-)

Na3AsO3(aq) + I2(aq) + H2O(l) HCl→

Na3AsO4(aq) + 2HI(aq)

3 Na+ + AsO33- + I2(aq) + H2O(l) → 3 Na+ + AsO4

3- + 2 H+ + 2 I-

AsO33- + I2(aq) + H2O(l) HCl

→ AsO4

3- + 2 H+ + 2 I-


14.

Arsenat (AsO43-)

Na3AsO4(aq) + 3 HCl(aq) CHCl→

NaCl(aq) + H3AsO4(aq)

H3AsO4(aq) + 2 KI(aq) + 5 HCl(aq) AsCl3(aq) + KCl(aq) + 4 H2O(l) + I2(aq)

Na3AsO4(aq) + 8 HCl(aq) + 2 KI(aq) 3 NaCl(aq) + AsCl3(aq) + 2 KCl(aq) + 4 H2O(l) + I2(aq)

3 Na+ + AsO43- + 8 H+ + 8Cl- + 2K+ + 2I- 3Na+ + 3 Cl- + As3+ + 3 Cl- + 2K+ + 2 Cl- + 4H2O + I2(aq)


15.

Kromat (CrO42-)

2 K2CrO4(aq) + H2SO4(aq) K2Cr2O7(aq) + K2SO4(aq) + H2O(l)

4K+ + 2CrO42- + 2H+ + SO4

2- 2K+ + Cr2O72- + 2K+ + SO42- + H2O(l)

2CrO42- + 2H+ + SO4

2- Cr2O72- + H2O(l) + SO4

2


16.

Dikromat (Cr2O72-)K2CrO7(aq) + 2NaOH(aq) → Na2CrO4(aq) + K2CrO4(aq) + H2O(l)

2K+ + Cr2O72- + 2Na+ + 2OH- → 2Na+ + CrO4

2- + 2K+ + CrO4 2- + H2O(l)

2OH- + Cr2O72- →H2O(l) + 2CrO4

2-

K2Cr2O7(aq) + H2SO4(aq) → K2SO4(aq) + 2 CrO3(aq) + H2O(l)

2 CrO3(aq) + 6 KI(aq) + 6 H2SO4(aq) → Cr2(SO4)(aq) + 6 H2O(l) + 3 I2(aq) + 3 K2SO4(aq)

K2Cr2O7(aq) + 7 H2SO4(aq) + KI(aq) → 4 K2SO4(aq) + Cr2(SO4)3(aq) + H2O(l)

2 K+ + CrO72- + 14 H+ + 7 SO4

2- + 6 K+ + 6 I- → 8 K+ + 4 SO42- + 3 I2(aq) + Cr2(SO4)3(s)↓ + 7 H2O(l)

Cr2O72- + 14 H+ + 3 SO4

2- + 6 I- → 3 I2(aq) + Cr2(SO4)3(s)↓ + 7 H2O


17.

Permanganat (MnO4)2KMn4 (aq) + 10KI (aq) + 8H2SO4 (aq) → 5I2 (aq) + 8H2O (l) + 2MnSO4 (aq)

2K+ + 2MnO4- + 10K+

+ 10I- + 16H+ + 8SO42- → 10I- + 16H+ + 8O2- + 2MnSO4 + 12K+ + SO4

2-

2MnO4 (aq) + H2SO4 (aq) + Na2SO4 (aq) → K2SO4 (aq) + MnO7 (aq) + H2O(aq) Na2SO4 (aq)

2KMnO4 (aq) + 2H+ + SO42- → MnO4 + 2K+

+ SO42- + H2O (l)

2KMnO4 (aq) + 8H2SO4 (aq) + 5Na2(COO)2 (aq)

→ K2SO4 (aq) + 2MnSO4 (aq) + 8H2O (l) + 10CO2 (g) + 5MnSO4 (aq)

tugas ddka pertemuan 5 amaliah berly sri

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