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Name one ore that can be used to commercially extract Zinc metal - Zinc blende (b) The flow chart below illustrates the extraction of zinc and preparation of zinc sulphate crystals.

Chemistry

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Answer

vi

112500 g112500 \text{ g}

Step-by-step solution

2 steps

Huu hapa ni utatuzi wa maswali yako:

Part i

Jina

  • (I) Gesi P: Carbon monoxide (COCO)
  • (II) Kimiminika R: Asidi ya sulfuriki (H2SO4H_2SO_4)
  • (III) Mabaki S: Uchafu usioyeyuka (Insoluble impurities)

Part ii

Jukumu la coke katika mchakato huu ni kama wakala wa kupunguza (reducing agent). Huondoa oksijeni kutoka kwa zinki oksidi (ZnOZnO) na kuibadilisha kuwa zinki (ZnZn).

Part iii

Uchafu mkuu unaoondolewa katika chumba cha kutenganisha ni chuma (iron) au risasi (lead).

Part iv

Andika mlinganyo wa mmenyuko unaotokea katika

  • (I) Tanuru ya kuchoma (Roaster): 2ZnS(s)+3O2(g)→2ZnO(s)+2SO2(g)2ZnS_{(s)} + 3O_{2(g)} \rightarrow 2ZnO_{(s)} + 2SO_{2(g)}
  • (II) Chumba cha Mmenyuko II (Reaction Chamber II): ZnO(s)+C(s)→Zn(g)+CO(g)ZnO_{(s)} + C_{(s)} \rightarrow Zn_{(g)} + CO_{(g)}

Part v

Andika mlinganyo wa mmenyuko unaotokea kati ya chuma cha zinki na kimiminika R

Zn(s)+H2SO4(aq)→ZnSO4(aq)+H2(g)Zn_{(s)} + H_2SO_{4(aq)} \rightarrow ZnSO_{4(aq)} + H_{2(g)}

Part vi

112500 g112500 \text{ g}

Kuhesabu wingi wa zinki sulfidi

  1. Pata wingi wa zinki sulfidi katika madini.

    Wingi wa zinki sulfidi=45%×250 kg\text{Wingi wa zinki sulfidi} = 45\% \times 250 \text{ kg} Wingi wa zinki sulfidi=0.45×250 kg=112.5 kg\text{Wingi wa zinki sulfidi} = 0.45 \times 250 \text{ kg} = 112.5 \text{ kg}

  2. Badilisha wingi kuwa gramu.

    Wingi wa zinki sulfidi=112.5 kg×1000 g/kg=112500 g\text{Wingi wa zinki sulfidi} = 112.5 \text{ kg} \times 1000 \text{ g/kg} = \boxed{112500 \text{ g}}

Part vii

Matumizi moja ya kibiashara ya chuma cha zinki ni

  • Kutengeneza aloi kama vile shaba (brass).
  • Kufanya galvanizing (kufunika chuma na zinki ili kuzuia kutu).
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