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Giáo án Hóa 12 cơ bản Soạn chuẩn theo chủ đề 5 bước (2017)

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CO 2 + Ca(OH) 2 CaCO 3 ↓ + H 2 O (3)<br />

Theo (1), (2), (3) ta cã:<br />

n<br />

CO 2<br />

= n<br />

MgCO<br />

+ n<br />

3 BaCO<br />

= 0,2 mol<br />

3<br />

§Ó l−îng kÕt tña B lín nhÊt ta cã:<br />

28,1. a 28,1.(100 − a)<br />

+ = 0,2<br />

100.84 100.197<br />

Gii ph−¬ng tr×nh trªn ta ®−îc a = 29,89%.<br />

4. Cñng cè: GV hÖ thèng ho¸ kiÕn thøc c¬ bn ®· häc.<br />

5. H−íng dÉn vÒ nhµ: HS chuÈn bÞ bµi 27.<br />

Duyệt của tổ CM<br />

Ngày 29 /1/2018<br />

Vũ Đức Đạt<br />

113

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