某化学兴趣小组在实验室发现了一瓶标签受到腐蚀(如图所示)的无色溶液,他们对此产生了兴趣。 [提出问
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(1)氯化钠、碳酸氢钠 (2)
绛旓細锛1锛2NaOH+H 2 SO 4 =Na 2 SO 4 +2H 2 O锛2锛夈愮寽鎯炽慛a 2 SO 4 銆愯璁恒戝皬鑻憋紝灏忔槑锛屾护娑蹭腑鍚湁纭吀閾滐紝婧舵恫鍛堣摑鑹层瀹為獙銆 瀹為獙姝ラ 棰勬湡鐨勫疄楠岀幇璞 閰氶厼婧舵恫 鏃犺壊婧舵恫鍙樼孩鑹 璇曢鍒嗘瀽锛氾紙1锛夋阿姘у寲閽犺兘涓庣~閰稿弽搴旂敓鎴愮~閰搁挔鍜屾按锛屾晠濉細2NaOH+H 2 SO 4 =Na 2 SO... 绛旓細锛1锛夌墿璐ㄦ憾浜庢按鍒嗕负涓や釜杩囩▼锛氭瀯鎴愮墿璐ㄧ殑寰矑鍚戞按涓墿鏁g殑杩囩▼锛岃繖涓杩囩▼闇鍚哥儹锛屾瀯鎴愮墿璐ㄧ殑寰矑涓庢按鍒嗗瓙褰㈡垚姘村拰鍒嗗瓙鐨勮繃绋嬶紝杩欎竴杩囩▼闇鏀剧儹锛屽鏋滃惛鐑ぇ浜庢斁鐑垯婧朵簬姘磋〃鐜颁负鍚哥儹锛屽鏋滃惛鐑皬浜庢斁鐑垯婧朵簬姘磋〃鐜颁负鏀剧儹锛屽鏋滃惛鐑瓑浜庢斁鐑垯琛ㄧ幇涓烘憾浜庢按娓╁害涓嶅彉锛庡父瑙佺殑婧朵簬姘存斁鐑殑鏈夛細娴撶~閰搞佺敓... 绛旓細鏌愬寲瀛﹀叴瓒e皬缁勫湪甯姪鏁寸悊鍖栧瀹為獙瀹鏃讹紝鍙戠幇涓鐡朵箙鏈洊涓婄摱濉炵殑姘㈡哀鍖栭挔婧舵恫锛庤灏忕粍鍚屽瀵硅鐡舵阿姘у寲閽犳憾娑蹭骇鐢熸祿鍘氱殑鍏磋叮锛屽喅瀹氱爺绌跺苟璇佹槑璇ョ摱婧舵恫鏄惁鍙樿川锛嶽鎻愬嚭鐚滄兂]鐚滄兂涓锛氳鐡舵阿姘у寲閽犳憾娑叉湭鍙樿川锛庣寽鎯充簩锛氳鐡舵阿姘у寲閽犳憾娑插畬鍏ㄥ彉璐紟鐚滄兂涓夛細璇ョ摱姘㈡哀鍖栭挔婧舵恫閮ㄥ垎鍙樿川閮ㄥ垎鍙樿川锛嶽鍒濇璇佹槑]璇... 绛旓細锛1锛塵=CVM=0.10mol/L脳0.9L脳126g/mol=12.6g锛瀹為獙涓渶瑕佺殑浠櫒涓猴細鐢ㄤ簬婧惰В鏅朵綋鐨勭儳鏉紝璧锋悈鎷屽拰寮曟祦浣滅敤鐨勭幓鐠冩锛屽閲忕摱娌℃湁900mL鐨勶紝鍙兘閫夋嫨瑙勬牸鐣ュぇ鐨1000mL瀹归噺鐡讹紝瀹氬鏃剁敤鐨勮兌澶存淮绠★紱鏁呯瓟妗堜负锛12.6锛1000mL瀹归噺鐡讹紱锛2锛夆憼鑽夐吀鍜岄吀鎬ч珮閿伴吀閽炬憾娑插弽搴旂殑绂诲瓙鏂圭▼寮忎负锛5H2C2O4+2... 绛旓細璁緋4.0g杩囨哀鍖栨阿婧舵恫涓惈鏈夎繃姘у寲姘㈢殑璐ㄩ噺涓簒 1h101 mn01 .1h10+01鈫 68 p1 x 锛坧4.0g+0.5g锛-pp.7g=0.8g 68 x = p1 0.8g x=7.7g 璇ヨ繃姘у寲姘㈡憾娑蹭腑婧惰川鐨勮川閲忓垎鏁= 7.7g p4.0g 脳700%=5 绛旓細璇ヨ繃姘у寲姘㈡憾娑蹭腑婧惰川鐨勮川閲忓垎鏁颁负5%锛... 绛旓細39.(6鍒)鏌愬寲瀛﹀叴瓒e皬缁勫湪瀹為獙瀹ゅ彂鐜颁簡涓鐡舵爣绛惧彈鍒拌厫铓(濡傚彸鍥炬墍绀)鐨勪簲鑹叉憾娑,浠栦滑瀵规浜х敓浜嗗叴瓒c [鎻愬嚭闂]杩欑摱婧舵恫绌剁珶鏄粈涔?缁忚繃璇㈤棶瀹為獙鑰佸笀骞虫椂鐨勮嵂鍝佷繚绠″緱鐭,杩欑摱鏃犺壊婧舵恫搴旇鏄⒊閰搁挔銆佺⒊閰告阿閽犮佹隘鍖栭挔銆佺~閰搁挔銆佺閰搁挔涓殑鏌愪竴绉嶃備负浜嗙‘瀹氳鑽搧,浠栦滑棣栧厛杩涜浜嗙悊璁哄垎鏋:(1)灏忔槑鏍规嵁鏍囩涓婄殑缁... 绛旓細銆瀹為獙鎺㈢┒2銆戝師婧舵恫涓惈鏈夌⒊閰搁挔锛屽垯纰抽吀閽犺兘涓庢隘鍖栭挋婧舵恫鍙嶅簲鐢熸垚纰抽吀閽欑櫧鑹叉矇娣锛屾晠鑳借瀵熷埌鏈夌櫧鑹叉矇娣鐢熸垚锛岀⒊閰搁挔涓庢隘鍖栭挋鍏呭垎鍙嶅簲鍚庯紝纰抽吀閽犺闄ゆ帀锛屽悜涓婂眰娓呮恫涓淮鍔犻厷閰炲彉绾紝鍒欐憾娑蹭腑鍚湁姘㈡哀鍖栭挔锛屾晠濉細鐧借壊娌夋穩锛屾阿姘у寲閽狅紱 銆愬疄楠岀粨璁恒戠粡璇曢獙鐭ラ亾鏍峰搧涓惈鏈夌⒊閰搁挔鍜屾阿姘у寲閽狅紝璇存槑鏄... 绛旓細鏌愬寲瀛﹀叴瓒e皬缁鍚屽鏌ラ槄璧勬枡鍚鍙戠幇鏈夎澶氶噾灞炵殑鐩愬杩囨哀鍖栨阿鍒嗚В鍏锋湁鍌寲浣滅敤,涓烘瘮杈僃eCl3鍜孋uSO4涓ょ鐩愬H2O2鍒嗚В鐨勫偓鍖栨晥鏋,浠栦滑鍒嗘垚鐢层佷箼涓ょ粍,鍒嗗埆璁捐浜嗗鍥句竴銆佸浘浜屾墍绀虹殑瀹為獙骞惰繘琛屼簡瀹為獙锛庯紙璁句袱绉嶇洂婧舵恫璐ㄩ噺鍒嗘暟鐩哥瓑锛夛紟锛1锛夋寚鍑轰华鍣ㄥ悕绉帮細A 鍒嗘恫婕忔枟 B 閿ュ舰鐡 锛2锛夊啓鍑鸿鍙嶅簲鐨勫寲瀛︽柟绋嬪紡 ... 绛旓細1.CO2鏄垵涓寲瀛﹂噸鐐圭爺绌剁殑姘斾綋涔嬩竴銆鏌愬寲瀛﹀叴瓒e皬缁璁捐浜嗗涓嬪疄楠屾潵鎺㈢┒CO2鐨勫埗鍙栧拰鎬ц川:(1)璇ュ叴瓒e皬缁勭敤骞茬嚗绠°佺儳鏉侀摐缃戠瓑璁捐瑁呴厤浜嗕竴涓鍦ㄥ疄楠屽涓埗鍙栦簩姘у寲纰虫皵浣撶殑瑁呯疆,濡傚彸鍥炬墍绀恒傚湪骞茬嚗绠″唴鐨勯摐缃戜笂搴旂洓鏀 ;鑻ュ皢閾滅綉鎹㈡垚閾佺綉,鍙兘浜х敓鐨勫悗鏋滄槸 ,鍏跺師鍥犳槸(鐢ㄥ寲瀛︽柟绋嬪紡琛ㄧず) 銆(2)璇ュ叴瓒e皬缁勫悓瀛﹀皢... 绛旓細锛1锛夊湪鍔犵儹鏉′欢涓嬶紝浜屾哀鍖栭敯鍜屾祿鐩愰吀鍙嶅簲鐢熸垚姘皵锛屽悓鏃剁敓鎴愮殑姘皵涓繕鍚湁姘村垎锛屾祿纭吀鍏锋湁鍚告按鎬с佽劚姘存у拰寮烘哀鍖栨э紝鎵浠瑁呯疆闄や簡鎺у埗姘旀祦閫熷害銆佸潎鍖娣峰悎姘斾綋澶栵紝杩樻湁骞茬嚗浣滅敤锛屾晠绛旀涓猴細骞茬嚗娣峰悎姘斾綋锛涳紙2锛夋隘姘斾笌鐢茬兎鍙戠敓鍙栦唬鍙嶅簲锛屽弽搴旂壒鐐规槸1mol姘皵鍙彇浠1molH鍘熷瓙鐢熸垚1molHCl锛岃V锛圕l2锛/V锛... 本站交流只代表网友个人观点,与本站立场无关 |