{"id":4780,"date":"2020-04-23T09:28:12","date_gmt":"2020-04-23T02:28:12","guid":{"rendered":"https:\/\/bacdau.vn\/?post_type=kb&p=4780"},"modified":"2020-04-23T09:32:01","modified_gmt":"2020-04-23T02:32:01","slug":"cong-thuc-hieu-suat","status":"publish","type":"kb","link":"https:\/\/bacdau.vn\/kb\/cong-thuc-hieu-suat\/","title":{"rendered":"C\u00f4ng th\u1ee9c t\u00ednh hi\u1ec7u su\u1ea5t"},"content":{"rendered":"
Khi h\u1ecdc c\u00e1c m\u00f4n t\u1ef1 nhi\u00ean tr\u00ean l\u1edbp bao g\u1ed3m to\u00e1n h\u1ecdc, h\u00f3a h\u1ecdc, v\u1eadt l\u00fd c\u00e1c em s\u1ebd g\u1eb7p kh\u00e1i ni\u1ec7m hi\u1ec7u su\u1ea5t. V\u1eady hi\u1ec7u su\u1ea5t l\u00e0 g\u00ec? <\/span>C\u00f4ng th\u1ee9c t\u00ednh hi\u1ec7u su\u1ea5t<\/b> nh\u01b0 th\u1ebf n\u00e0o? Bacdau.vn s\u1ebd gi\u1ea3i th\u00edch m\u1ecdi th\u1eafc m\u1eafc gi\u00fap em.<\/span><\/span><\/p>\n Tr\u01b0\u1edbc khi \u0111\u1ebfn v\u1edbi <\/span>c\u00f4ng th\u1ee9c t\u00ednh hi\u1ec7u su\u1ea5t<\/b>, c\u00e1c em c\u1ea7n n\u1eafm r\u00f5 v\u1ec1 kh\u00e1i ni\u1ec7m hi\u1ec7u su\u1ea5t.<\/span><\/span><\/p>\n Hi\u1ec7u su\u1ea5t c\u00f3 th\u1ec3 hi\u1ec3u \u0111\u01a1n gi\u1ea3n l\u00e0 kh\u1ea3 n\u0103ng l\u00e0m vi\u1ec7c hi\u1ec7u qu\u1ea3 c\u1ee7a m\u00e1y m\u00f3c ho\u1eb7c con ng\u01b0\u1eddi, \u0111\u1ed9ng v\u1eadt,… trong m\u1ed9t kho\u1ea3ng th\u1eddi gian c\u1ed1 \u0111\u1ecbnh. Hi\u1ec7u su\u1ea5t c\u00e0ng cao th\u00ec ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 hi\u1ec7u qu\u1ea3 l\u00e0m vi\u1ec7c s\u1ebd c\u00e0ng \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 t\u1ed1t.<\/span><\/p>\n Trong ph\u00e2n m\u00f4n h\u00f3a h\u1ecdc, <\/span>c\u00f4ng th\u1ee9c t\u00ednh hi\u1ec7u su\u1ea5t<\/b> \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng ch\u1ee7 y\u1ebfu \u0111\u1ec3 t\u00ednh hi\u1ec7u su\u1ea5t c\u1ee7a m\u1ed9t ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc.<\/span><\/span><\/p>\n <\/p>\n C\u00e1c c\u00e2u h\u1ecfi \u0111\u01b0\u1ee3c \u0111\u01b0a ra th\u01b0\u1eddng l\u00e0: T\u00ednh hi\u1ec7u su\u1ea5t c\u1ee7a ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc gi\u1eefa hai ch\u1ea5t ho\u1eb7c d\u1ef1a v\u00e0o hi\u1ec7u su\u1ea5t c\u1ee7a ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc \u0111\u1ec3 t\u00ecm ra c\u00e1c ch\u1ea5t c\u00f3 tham gia ph\u1ea3n \u1ee9ng. Khi \u0111\u00f3 c\u00e1c em s\u1ebd \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c d\u01b0\u1edbi \u0111\u00e2y:<\/span><\/p>\n B\u00e0i t\u1eadp v\u00ed d\u1ee5: T\u00ednh hi\u1ec7u su\u1ea5t c\u1ee7a ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc khi cho 39 gam b\u1ed9t Zn v\u00e0o ph\u1ea3n \u1ee9ng v\u1edbi 14( l\u00edt) Clo thu \u0111\u01b0\u1ee3c 73,44 gam h\u1ed7n h\u1ee3p k\u1ebft t\u1ee7a.<\/span><\/p>\n \u0110\u00e1p \u00e1n:\u00a0<\/span><\/p>\n – S\u1ed1 mol c\u1ee7a Zn : n Zn =39\/65= 0,6 (mol)<\/span><\/p>\n –\u00a0 S\u1ed1 mol c\u1ee7a Clo : n Cl =14\/22,4= 0,625 (mol)<\/span><\/p>\n – S\u1ed1 mol c\u1ee7a h\u1ee3p ch\u1ea5t t\u1ea1o th\u00e0nh : n ZnCl2= 73,44\u00f7136= 0,54 ( mol)<\/span><\/p>\n – Ta c\u00f3 ph\u01b0\u01a1ng tr\u00ecnh h\u00f3a h\u1ecdc l\u00e0 : <\/span>n Cl2+ n Zn —-> n ZnCl2<\/span><\/p>\n S\u1ed1 Mol c\u1ee7a Zn nh\u1ecf h\u01a1n s\u1ed1 Mol c\u1ee7a Cl v\u1eady, Cl c\u00f2n d\u01b0 n\u00ean ta t\u00ednh theo s\u1ed1 mol c\u1ee7a Zn tham gia ph\u1ea3n \u1ee9ng.<\/span><\/p>\n Hi\u1ec7u su\u1ea5t c\u1ee7a ph\u1ea3n \u1ee9ng s\u1ebd l\u00e0 :<\/span><\/p>\n H= 0,54\u00d7100\/0,6= 90 (%)<\/span><\/p>\n \u0110\u1ed1i v\u1edbi m\u00f4n v\u1eadt l\u00fd, c\u00f4ng th\u1ee9c th\u01b0\u1eddng \u00e1p d\u1ee5ng \u0111\u1ec3 t\u00ednh c\u00f4ng c\u01a1 h\u1ecdc, c\u1ee5 th\u1ec3:<\/span><\/p>\n <\/p>\n Trong \u0111\u00f3: C\u00f4ng c\u00f3 \u00edch ch\u00ednh l\u00e0 Aci, c\u00f2n Atp \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 c\u00f4ng to\u00e0n ph\u1ea7n.<\/span><\/p>\n V\u00ed d\u1ee5: T\u00ednh hi\u1ec7u su\u1ea5t c\u1ee7a m\u1ed9t m\u00e1y c\u01a1 \u0111\u01a1n gi\u1ea3n khi c\u00f4ng c\u00f3 \u00edch Ai c\u00f3 gi\u00e1 tr\u1ecb 200J v\u00e0 c\u00f4ng to\u00e0n ph\u1ea7n c\u1ee7a m\u00e2y l\u00e0 320J.<\/span><\/p>\n \u00c1p d\u1ee5ng c\u00f4ng th\u1ee9c tr\u00ean ta c\u00f3 hi\u1ec7u su\u1ea5t m\u00e1y \u0111\u1ea1t \u0111\u01b0\u1ee3c l\u00e0 :<\/span><\/p>\n H=Ai\/Atp= 200\/320 = 62,5 (%)<\/span><\/p>\n V\u1edbi b\u1ed9 m\u00f4n sinh h\u1ecdc, <\/span>c\u00f4ng th\u1ee9c t\u00ednh hi\u1ec7u su\u1ea5t<\/b> ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng \u0111\u1ec3 t\u00ednh hi\u1ec7u su\u1ea5t sinh th\u00e1i, hi\u1ec7u su\u1ea5t quang h\u1ee3p , hi\u1ec7u su\u1ea5t khai th\u00e1c , n\u0103ng l\u01b0\u1ee3ng to\u00e0n ph\u1ea7n v\u00e0 n\u0103ng l\u01b0\u1ee3ng th\u1ef1c t\u1ebf( n\u0103ng l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t b\u1eadc sinh d\u01b0\u1ee1ng).<\/span><\/span><\/p>\n C\u00f4ng th\u1ee9c t\u00ednh hi\u1ec7u su\u1ea5t \u1edf m\u00f4n sinh h\u1ecdc :<\/span><\/p>\n <\/p>\nKh\u00e1i qu\u00e1t v\u1ec1 hi\u1ec7u su\u1ea5t<\/span><\/h2>\n
Hi\u1ec7u su\u1ea5t l\u00e0 g\u00ec?<\/span><\/h3>\n
V\u00ec sao con ng\u01b0\u1eddi c\u1ea7n \u0111\u1ebfn “kh\u00e1i ni\u1ec7m” hi\u1ec7u su\u1ea5t?<\/span><\/h3>\n
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C\u00e1c c\u00f4ng th\u1ee9c t\u00ednh hi\u1ec7u su\u1ea5t trong ch\u01b0\u01a1ng tr\u00ecnh gi\u00e1o d\u1ee5c ph\u1ed5 th\u00f4ng<\/span><\/h2>\n
C\u00f4ng th\u1ee9c t\u00ednh hi\u1ec7u su\u1ea5t trong m\u00f4n h\u00f3a h\u1ecdc.<\/span><\/h3>\n
C\u00f4ng th\u1ee9c t\u00ednh hi\u1ec7u su\u1ea5t trong b\u1ed9 m\u00f4n v\u1eadt l\u00fd<\/span><\/h3>\n
C\u00f4ng th\u1ee9c hi\u1ec7u su\u1ea5t trong m\u00f4n sinh h\u1ecdc<\/span><\/h2>\n