309
鏁欒偛缃?/p>
www.309edu.com
309
鏁欒偛璧勬簮搴?/p>
www.309edu.com
鍖栧璁＄畻鐨勫父鐢ㄦ柟娉?/p>
鏂规硶涓�
瀹堟亽娉?/p>
(
涓�
)
璐ㄩ噺瀹堟亽
(
鍘熷瓙瀹堟亽
)
渚濇嵁鍖栧鍙嶅簲鐨勫疄璐ㄦ槸鍘熷瓙鐨勯噸鏂扮粍鍚堬紝鍥犺�屽弽搴斿墠鍚庡師瀛愮殑鎬绘暟鍜岃川閲忎繚鎸佷笉鍙樸�?/p>
[
鍏镐緥
1]
(2019路鐭冲搴勮皟鐮?/p>
)28g
閾佺矇婧朵簬绋�鐩愰吀涓紝鐒跺悗鍔犲叆瓒抽噺鐨?/p>
Na
2
O
2
鍥轰綋锛屽厖鍒嗗弽
搴斿悗杩囨护锛屽皢婊ゆ福鍔犲己鐑紝鏈�缁堝緱鍒扮殑鍥轰綋璐ㄩ噺涓?/p>
(
)
A
锛?/p>
36gB
锛?/p>
40gC
锛?/p>
80gD
锛?/p>
160g
绛旀
B
瑙ｆ瀽
28 g
閾佺矇婧朵簬绋�鐩愰吀涓敓鎴愭隘鍖栦簹閾佹憾娑诧紝鐒跺悗鍔犲叆瓒抽噺鐨?/p>
Na
2
O
2
鍥轰綋锛岀敱浜?/p>
Na
2
O
2
鍥?/p>
浣撴憾浜庢按鍚庣敓鎴愭阿姘у寲閽犲拰姘ф皵锛?/p>
鏈韩涔熷叿鏈夊己姘у寲鎬э紝
鎵�浠ュ厖鍒嗗弽搴斿悗鐢熸垚姘㈡哀鍖栭搧娌夋穩锛?/p>
杩囨护锛屽皢婊ゆ福鍔犲己鐑紝鏈�缁堝緱鍒扮殑鍥轰綋涓?/p>
Fe
2
O
3
锛屾牴鎹搧鍘熷瓙瀹堟亽锛?/p>
n
(Fe
2
O
3
)
锛?/p>
1
2
n
(Fe)
锛?/p>
1
2
脳
28 g
56 g路mol
锛?/p>
1
锛?/p>
0.25 mol
鎵�寰?/p>
Fe
2
O
3
鍥轰綋鐨勮川閲忎负锛?.25 mol脳160 g路mol
锛?/p>
1
锛?/p>
40 g
銆?/p>
閽堝璁粌
1
锛?2018路闀挎眬鍘挎牎绾ф湀鑰?/p>
)
鏈?/p>
14gNa
2
O
2
銆?/p>
Na
2
O
銆?/p>
NaOH
鐨勬贩鍚堢墿涓?/p>
100g
璐ㄩ噺鍒嗘暟涓?/p>
15%
鐨勭洂
閰告伆濂藉弽搴旓紝钂稿共婧舵恫锛屾渶缁堝緱鍥轰綋璐ㄩ噺涓?/p>
(
)
A
锛?/p>
20.40gB
锛?/p>
28.60gC
锛?/p>
24.04gD
锛庢棤娉曡绠?/p>
绛旀
C
瑙ｆ瀽
娣峰悎鐗╀笌鐩愰吀鍙嶅簲鍚庢墍寰楁憾娑蹭负姘寲閽犳憾娑诧紝钂稿共鍚庡緱鍒?/p>
NaCl
锛岀敱
Cl
锛?
璐ㄩ噺瀹堟亽鍏崇郴
鍙緱
100 g脳15%脳
35.5
36.5
锛?/p>
m
(NaCl)脳
35.5
58.5
锛岃В寰?/p>
m
(NaCl)鈮?4.04 g銆?/p>
2
锛?2018路濂夎搐鍖轰簩妯?/p>
)
涓�瀹氶噺鐨?/p>
H
2
鍜?/p>
Cl
2
鍏呭垎鐕冪儳鍚庯紝灏嗗弽搴旂敓鎴愮殑姘斾綋閫氬叆
100
mL 1.0 mol路L
锛?/p>
1
鐨?/p>
NaOH
婧舵恫涓紝涓よ�呮伆濂藉畬鍏ㄥ弽搴旓紝鐢熸垚
NaClO
涓?/p>
0.01mol
锛屽垯鐕冪儳鍓?/p>
H
2
鍜?/p>
Cl
2
鐨勭墿璐ㄧ殑
閲忎箣姣斾负
(
)
A
锛?鈭?B锛?鈭?C锛?鈭?D锛?鈭?
绛旀
B
瑙ｆ瀽
100 mL 1.0 mol路L
锛?/p>
1
鐨?/p>
NaOH
婧舵恫涓惈鏈夋阿姘у寲閽犵殑鐗╄川鐨勯噺涓?/p>
1.0 mol路L
锛?/p>
1
脳0.1 L
锛?/p>
0.1 mol
锛涗袱鑰呮伆濂藉畬鍏ㄥ弽搴旓紝璇存槑
0.1 molNaOH
瀹屽叏鍙嶅簲锛岀敓鎴愮殑
0.01 molNaClO
鏉ヨ嚜
Cl
2
涓?/p>
NaOH
鐨勫弽搴?/p>
(Cl
2
锛?/p>
2NaOH===NaCl
锛?/p>
NaClO
锛?/p>
H
2
O)
锛屽垯姘㈡皵鍜屾隘姘斿弽搴斿悗鍓╀綑姘皵鐨勭墿璐?/p>
鐨勯噺涓?/p>
0.01
mol
锛屾秷鑰?/p>
NaOH
鐨勭墿璐ㄧ殑閲忎负
0.02
mol
锛屽彂鐢熷弽搴?/p>
NaOH
锛?/p>
HCl===NaCl
锛?/p>
H
2
O
锛屾秷
鑰?/p>
NaOH
鐨勭墿璐ㄧ殑閲忎负锛?/p>
0.1 mol
锛?/p>
0.02 mol
锛?/p>
0.08 mol
锛屽垯
n
(HCl)
锛?/p>
n
(NaOH)
锛?/p>
0.08 mol
锛?