1
鍏ㄥ浗
2019
骞翠腑鑰冨寲瀛﹁瘯棰樺垎鍗曞厓姹囩紪
鍖栧鏂圭▼寮忕殑璁＄畻
14
銆?/p>
锛?/p>
2019
骞绰锋灒搴勶級
绉戝鐮旂┒涓紝甯搁�氳繃瀵瑰疄楠屾暟鎹殑鍒嗘瀽璁＄畻锛屽緱鍑烘煇鏈煡鐗╄川鐨勭浉
瀵瑰垎瀛愯川閲忥紝
浠庤�屾帹娴嬭鐗╄川鐨勫垎瀛愬紡銆?/p>
鏌愮鐮斿皬缁勭粡鍙嶅瀹為獙锛?/p>
鍙戠幇
2A+3B=2C+4D
涓紝
3.2gA
鎭板ソ鍜?/p>
4.8gB
瀹屽叏鍙嶅簲锛岀敓鎴?/p>
4.4gC
銆傝闂細
锛?/p>
1
锛夊悓鏃剁敓鎴?/p>
D
鐨勮川閲忎负
g;
锛?/p>
2
锛夎嫢
D
鐨勭浉瀵瑰垎瀛愯川閲忎负
18
锛屾眰
A
鐨勭浉瀵瑰垎瀛愯川閲忥紙鍐欏嚭璁＄畻杩囩▼锛?/p>
銆?/p>
銆愮瓟妗堛�?/p>
锛?/p>
1
锛?/p>
3.6g
锛?/p>
2
锛?/p>
32
銆愯В鏋愩�?/p>
锛?/p>
1
锛?/p>
鏍规嵁璐ㄩ噺瀹堟亽瀹氬緥鍙煡锛?/p>
鍙傚姞鍙嶅簲鐨勫悇鐗╄川鐨勮川閲忔�诲拰涓�瀹氱瓑浜庣敓鎴愮殑鍚勭墿璐?/p>
鐨勮川閲忔�诲拰锛屾墍浠ョ敓鎴?/p>
D
璐ㄩ噺涓?/p>
3.2g+4.8g-4.4g=3.6g
锛?/p>
锛?/p>
2
锛夎
A
鐨勭浉瀵瑰垎瀛愯川閲忎负
X
2A + 3B = 2C + 4D
2x 4X18
3.2g 3.6g
2x : (4X18)= 3.2g : 3.6g
瑙ｅ緱
x=32
19.
锛?/p>
2019
骞绰锋棩鐓э級
涓烘帰绌堕摐鍙婂叾鍖栧悎鐗╃殑鎬ц川锛岃繘琛屽涓嬪疄楠岋細绉板彇宸查儴鍒嗚
H
2
杩樺師鐨?/p>
姘у寲閾滅矇鏈?/p>
(
鍚?/p>
Cu
鍜?/p>
CuO)7.2g
缃簬鐑ф澂涓紝鍚戝叾涓姞鍏?/p>
50g
绋�纭吀锛屽厖鍒嗗弽搴斿悗锛屽啀鍚戠儳
鏉腑鍔犲叆婧惰川璐ㄩ噺鍒嗘暟涓?/p>
20%
鐨?/p>
NaOH
婧舵恫锛屽姞
NaOH
婧舵恫鐨勮繃绋嬩腑锛岀儳鏉唴鍥轰綋鐗╄川鐨勮川閲?/p>
涓庡姞鍏?/p>
NaOH
婧舵恫鐨勮川閲忓叧绯诲鍥炬墍绀恒�?/p>
璇疯绠楋細
(1)Cu
鍜?/p>
CuO
鐨勬贩鍚堢墿涓紝
Cu
鍏冪礌鍜?/p>
O
鍏冪礌鐨勮川閲忔瘮銆?/p>
锛堝啓鍑鸿绠楄繃绋嬶紝涓嬪悓锛?/p>
(2)
瀹為獙鎵�鐢ㄧ█纭吀涓憾璐ㄧ殑璐ㄩ噺鍒嗘暟銆?/p>
(3)a
鐨勫�笺�?/p>
銆愮瓟妗堛�?/p>
锛?/p>
1
锛?/p>
8
锛?/p>
1
锛?/p>
2
锛?/p>
9.8
锛?/p>
锛?/p>
3
锛?/p>
8.1
銆愯В鏋愩�?/p>
(1)
绋�纭吀涓庢哀鍖栭摐鍙嶅簲鐢熸垚纭吀閾滃拰姘达紝
閾滀笉涓庣█纭吀鍙嶅簲锛?/p>
鏁呯儳鏉唴鍓╀綑鐨?/p>
3.2g
鍥轰綋鐗╄川鍗充负閾滅殑璐ㄩ噺锛屾哀鍖栭摐鐨勮川閲忎负锛?/p>
7.2g-3.2g=4g
銆傛哀鍖栭摐涓摐鍏冪礌鐨勮川閲忎负锛?/p>
4g
脳
脳
100
锛?/p>
=3.2g
銆?/p>
閭ｄ箞
Cu
鍜?/p>
CuO
鐨勬贩鍚堢墿涓紝
Cu
鍏冪礌鍜?/p>
O
鍏冪礌鐨勮川閲忔瘮
=
锛?/p>
3.2g+3.2g
锛?/p>
锛?
锛?/p>
7.2g-3.2g-3.2g
锛?/p>
=8
锛?/p>
1
(2)
瀹為獙鎵�鐢ㄧ█纭吀涓憾璐ㄧ殑璐ㄩ噺涓?/p>
x
銆?/p>
