真四第張五第二日三廿月二年卯乙攒
WAH KIU YAT PO.
報日僑華
21 98
耗電、
教鬱採加識必备款
育教濟經
華僑經濟
六千萬股。
·市场抢 收市則爲三 三至日交投共成二億 三點七六,下跌〇〇
[特默][九市道
澳
I 五角今,讓低! 九十三元三角中,多見 *WEZLIK RO 一元三角平,少見七霄 肖馬克在港免二百千 一,三五,在褾交1
一百加元在裤仓四百
·昨(1)日因荷明節镞近,燃
種需求耪·肉商納意依强
硕,其中大豬六千二百一卡業 台糖無二二七,00,高二一八,九五,即在
奧匯續升 十餘國,新界大豬價跌十元。但交一萬日元在阱兌一首「在港兗二百一十九元四 大國豬共成七千零二十餘六十五元,多兌五角,角,多見七角,披園報
瑞匯亦揚 百五十餘項及終糰一千四百九六五 CO,即在日 〇,包在馬交一百歸元 即在台交一千台幣在港星交一百坡元在免二
心外西市况,8大報 高二九·四 《特诀》昨〔] 捆钴一百一十八元九
·包在法交一百法郎在
四角在〇角
年四百七十九蔗四百大十元。
*、汕尾等地運來。 三十分,咸鲜五百元蛮四百九十元,中豬蹲跳成五百元至四百八十元,兩盤 宁瑞穎六百八十餘頭:(內包括中豬)禍身揀手貨成五百十元至五百一 百九十元至三百八十元,尾盤三百七十元至三百六十元,最低三百五十分 ,新界上市九百二十餘項,內大豬二百三十餘頤,下跌十元,頭盤成川 群保從:上海、浙江、湖北、安徽、河南、湖南、東西、廣門、廣東、泰 四九。三五 ·卽在加一元五仙。 百八十元至四百七十元,以上 兗五和六角,加西绣高、九十五元六角中,意 五百元至四百九十元,尾盤四百六十九元五角牛,多交一百法郎在我見一百 五元、三百九十元、二百八十萬六六九五五,即在一分一分五仙,開源報高
* 百二十元十阋一百廿七元,連匯報 百一十八元九角中多
五期星
日四月四年五七九一腊公年四十六國民黨中
需多期節明清
暢猪種燒
穩堅價市
頭千八共盤成市猪 跌價部局猪大
三五千頭頭十百百黎糠昨
油麵餘五四價
頭其大頭十十
會將促請日本双府换取一定的成員,因此一日
(特》法新妣某一解釋由於本慮與日本的一 直部導,日本新潮即位,爲國際楊桃織品貿易路 東京(特選 何數量限制,日亦絕不會單獨針對限制港品進口。 工商著表示,日方未向港提出談判,目前並無任
日本擬限制棉紡織品進口
必要措施限制規級品造本要實施限制本倦枋教股市
需要雙方洽商始能實行
港日同爲國際棉協成員
口向瞑目培術:
引診而制澳於方口思然港品單,而
必
品的進口,必需要有-
.
制面蹤酒 本亦始壁1
,車姿此 光 活 肝 加
現然 气 即平點數維 不汽 船
好|覆市|
產
美過球狀特東四:
化歐
高
提普盤新貨冬美歐
半一減訂外商貨百
升冷毛品纖毛,成一逾升品粧化金五小什洋
。購訂量大敢未殺一,多證積內彙。八份百 的, 意但 蘭商 此依都內員的薪小客貨生起去波商訂
此的
(亦對趨現 秋始 聞常 看對甚,巴貨仍出勢,唐業故業苷多特 沙少表今淡而冬向開惯好今露大报出版 吸十五訂不年,袁百歐始例。年
【黄酸勛然麥示,日本方
·“又據表示:雖然今
實施。日本官員,面有戴恩跟個本港的雞,我幾段則第一支服秀,外國工賽的上升,加上,但另一方面,中國大 油,三光汽船及東,但基於百貨商人對今 不顾增加·承受力鵖强打假挺高的主因是由於一年歐樂百貨的來倒報高 野花,表現活课,如帝國石 航運費用不斷上漲所變的貨品有降仪的 之七至A左右。據說!!
勢,開認爲這可能與
行同源的越現出對進口,而與歐爾共南方新明利:本田汽車,伊 數量,最近日本表示唏一步已有澳洲,加拿大都一批般亦裘現不著,如 庞息商赛上尤柱商联等
一般都未敢大量浴手打獨示,在今年中國大陸 日,加上去年树壓的在第一滤水準及質量開海有 满。據有關人士估計也即將聚行的春季交易會 源,影啊打響心理,故關,照見前初步的跡象
貨元製獎。
錦獎
然量之品近,生不的
亦間,由因意搬生,訂業在
鎖
美鈔做價止跌回挺
八七
美電亦升收市高成四八七.七 陈》本浩九九 市場爲轉活,高時楠一八角。橋底加三五仙 金價收市一〇一九二二升八角
美去年石油消耗
的畜力。工商製官員亦灣及香港的紡織品 期價則跌六角牛一七一
低
很好
○元:
告強市六量
响致
舒考时練好艾較出,問二比價
七大上黎住七金
四
求元告费 躍元
石政成價。
市岗八回元○紐七佛外
一,出現一九五二年以來一,而被少進口石油 OTK款,最淡」、〇一五、五
三石石之
石羊油油數
天多億油滑滑学
酸力
椒籽油添菠蘿
',伯爲把绑
屈基石下石年
感大,以如國因托排
成五挺轉業約五软器,使棉
一,五八四)
·仍各责,昨上市最,会上市設,美上市股,美。內。
五白每舖價 九本 仍枚千金阳掛未 金瑞升七八四市牙七八·四市 ——六八四一,七八四
升五七四市
爲限元台幣,六八第七,六八元,
79.00~80.00 $79.00
79.50
#573-70
(二)公用類
14:00 14.10 13.70 2.05 2.10 2.00 3.70
13.80 13:80
兩信與觀四金,昇然,角,〇二,角
元位單
日二月四
開市價最高價最転質收市價,收市價 收市價 )銀行類
腦
(四)地查建築類
銀行
銀行
(0.70 0.75
開市價 最高質、最低價 香港
. $0.00
協成行 萬邦投書:
1.852.00
1.85
0172 0.72
0.30
·0:30:
.0.30
13.80
2.00
2.10
3.70
3.70
0.60
0:61
0.60 0.52 0.52 0.52
0.60 0.61
13.70.113.80% 13.60
13.70-13.80 -. 13,70.
6.25 6.25 6-10
3.05 3,05 -9.05 3.05.
0.52
太古昌(除) 南太平地 伊人個業
0.81 0.81
*0.81
三格易大跡 邂症
計統合綜價市票股所易交證間四港香
開市價,最高價 最低價 沒甜在夜市課、收市價:「股
0.70
3.30 3.40. 3.20 3.325 3.30
開市價:最高價 最低價 沒市價收市價:攻價:
2.65
0-27
遠東金銀 腴 牧市價攻市價 收市價
2:00
0.30
0.94
雜避航买
0.81
奉光果
會德業船A(除息)2.65 會德專船日(除意)0.26 3.40 萬邦航業
2.90 -2.50 2.55
2.65
2.65.
0:26:
0.27
東方貨覆 新海
1.73
1.73.
"3.50 3.40 2:80 -2.90.
2.50- 1.66
3.40 3.40
3.50
2.90
2.80.
2.50
2.55
1.70 1.66
6.16 6.10
6.10
聯益:
中海淇氣
·· 3.10 3.163.05.
9.20. 9.40
TIZERS 11.50 11.90 油解地小(除您) 九龍巴士
4.30 4.45,
4.30
3.15 3.125 3.125
·'9.40· 9.20
9.30 9.30 11.40 11.80 11.70 11.90
4.375 4.375 .4.40
·信託
1.60
1.60
1.60
1.60
畢大、
1.06
1,04
1.15
1.23
1.23
利懷
10.41 0:41
0:39
0.40
6.70
6.70
6.70
̇和記地產
3.403.40
8.40.
3.40
3.40
遠東發展
統一
(九)投資類
3.35 聯合藥:
翔泰股份(除易)
3.45 .3.35 3.40 3.40 3.45
稱
太平提
5.50 -5.60 5.50
6.50 5.50
5-60
(三)工商企業類
1,50%.. 1.54.
1.48 1-53) 1.52
1.52-
金田地產
器
恰和證券
6.25
6.35
6.00
6.30 6.20 6.30
森謝美......
0.45 0.46 0.45
肠藏A
1.40
1.42 1.40
1.40
1.40
1.42
(五)倉場類
優家落外
2.30. 2.40
2.30 2.40
0.46
海南
浩太投資(被停牌)
9.60. 6.10
9.80 9.55
9.80 9.55
9.70
新鴻器
2.35 2.40
2.30 2.35
2.35.
2.35
黃埔船塢
9.20.
-9:35
9.20
9.20.
9.30
11,00
.6.20 6.05 6.20. 11.20.10.90
7.25 7:25 7.25 1-85
11.00 11.00 11.00
7.25
6.05: 6.10
大气
0.13-
0.13
0:13
0.13
九躍倉
10.80 11.40 10.80
11.00-11.00
泰盛發食
0.81
0.85
0.81
0.84
0.85.
安全貨倉:
0.32
20.32
0.31
0.31
4.80 4.80
4.75
4.75
4.80
二(十)橡星類: 聯合橡墼(除息)— 橡膠信託(除息5-
1.95 1.85
1.95 1.95
̇新世界
∙1.40
1.42.
· 1.37 1.98.
1-37
1.38
(六)酒店類
(十一)其他
2.15 2.15 2.10
2.15 2.10 195 2.075 1.92 -2.05 26:30 25.40 26.00
3480
保利工程(曾停牌
25,90:26.00:
2.05 2.05
4.00
0.40 0.40 0.40
0.40
聯酒店
0.83 *0.85.
0.83.
-0.84
0.85
君
啤酒(除各項)7.25
$2.26
7:25 $7.25
一大新公和
0.75 0.75 0.75 10.73 0.98
0.75
城市酒店
0.76 0:72 0.74 0:96
0.73 0.73
【港公司。
大酒店
7.50 7:50 7.50 7:50 5.90 6.10 5.90
邵氏(除息) 星島報藥:
5.90 6.00 5.00
0.98
0.96
0,98
南國
永安人事
1430
-0.185 0.19
4:40 $4.40 4.40
1.30 1.30
0.18
0.185 0-1
1.30
1.30
1.80
10:40
0.40
10-40
3.20
3.25
2,05 2,05 2.05
3.075 116
信槪企業
10.40 10.40
3.20 3.25, - 3:25 3.25
2:05
2.05 3.225 3.075 3,20 3.15 3.15
·1.80 1·75 1.76 18 1.80-
0.42 0.40
0.42 0.41
棨覺
紅寶石 大石 R
0.40 0.43 0.40
0.43
盈利激藥
大生地,
1320
1.22
1.18
1.20 1:20
$1,20
·永露(除麻 目樂
.5.40: 5.40 5.40 5.40
25.70
25,80
25.70 25.70
25.80
0.63
0:63
0163
0.63
-0.61 0.61
0.61
· 0.68
0.55 .0.57
0.70 0.68. 0.70 0.54
0.70 0.70
(七)新獭製友類
變皺厰
九龍交易所上市股
●關市價
最高匯
̇最低價
收市價
0.56
新馬雲友
太古平行
6:40 6.10 6.35 *6.35
0.56
保風
南海砂版
0.58
0.58
0.58
-0.58
海排工程 志正國際
2.40 "2.40
2.40
二莊土集團
13.00
13.00 12.90.
12.90
大元:
0.30
0.30
0.30
0.30
利交
0.46 0.46 0.46
0.46
不與虛發農
-0.65 0.65 0.65 0.60 0.60 0.59
0.65
南薴寰業
0.55
0.55
0.55
0,60 0.59
長江製衣
1.65
1.65
1.65
.1.65
生車
永鴻灘
收佈
化學科(廿-
CHEMISTRY (#21)
陳湛杰
Solutions for Chemistry (#20)
1 Amongst chemical processes, two
olasses of reactions are especially eignificant. Those zezotione that involve transfer of proton are knovi, an acid-base reactions. Those that involve transfer of electrons
font000wn ag·
Kimotionation-reduc tilen
SAT, though.
the
oxidation had
provicuely. msant only. the union.of.
an 1ement with oxygen, this tem
has a much broader meaning now..
Thus the reactions".
我
Znd.
Zn + 012 > Zn012
|* (2H (aq) →→ Zo**(aq) + H2
979 all oxidation reactions regard. less of whether oxygen is involved or not.This is because in all three cases the element z is con verted into another state ie, Zn++; Thus oxidations are best jaterpret- : 68. a proceed whereby electrons:: e tendency for electron- neutrality, in any oxidation: roebtm ion there is a need for ins elect rons gere mated to be removed." is effected by the presence of read tanta capable of accepting t electrons. This process of alect- ron gain is temet reduction.
It can thus be seen that oxidat- fon and reduction are complementary processes in a reaction --which 10 more appropriately called a redox reactions In order to describe the various chemical: ataten involved in
redox reactions, the concept of Joxidation atates is used. The
oxidation state of a species is defined "as the difference between the atomic number and the number of orbital electrons. According to this definition, all elements have
The gero
(oupons),Co. are respectivaly -2, about ɔhanges in oxidat- Lon states are redox reactions. increase in oxilation stele. 10 balled oxidation. à decrease in
arodies
Azz + 43. All reactions
A1
城地產 鐵三
oxidation state 4e called reduction A substance that causes an increase in oxidation stats of another is an oxidizing agent, that which causes
a decrease is e reducing eganti
The moet Irena cable feature of redox reactions de distinct from other obenical reactions, ie that they can be carried out with the runotants sexramted in apene End
taked only by electrical connect lön Thus the galvando cell the following reaction is involved, Zn(e)+00% (83) Cu(8)+20+ (aq), The overall reaction of such a 0011 Ban be interpreted readily intare of two half-cell reactiong!- oxidation at the zine at ectrode, and reduntion at the copper electrode,"
Oxidation processes are illustrated
1. chemical addition of a cygon
e.5. 2H + C2 20
2. Remove of hydrogen
70.8, 2S+ O2
2303
25
H2SC12-201
3. Aldition of an aoid radical
e.g. 2FeCl2 + 01
2FeCIj
2005+20 + B2504 Fo2 (50)3 + H20
Reduction processen are illustı- ated by:
Removal of oxygen
Pen 02+ 300 — 29+ 300, 2. Addition of hydrogen” +880 + 2H28 20 +
294
21+ SV
La Rmoval of an had i reati
2
21
The
Of course different reaction cop- ditions are required in each case
HKO
2. at the molarities of KDH and HND, solutions be x and y respect- ively.
For the neutralization of DH. by
+0. KOH + 103 the equation is: 26.8y 25.1x-
26.8
1.058
· 25.12
The equation for the neutralizat ion of benzoio abit by XOH:-
reveals that benzoic acid is mono- basic,
Thus mmber of equivalente in 2007
: benzoic
&pid=
In the titration, total mount of KOH used in teme of equivalenta
41.2x
2
Total amount of benzoie soid and
in teme of equivalents
2.6+ 0701644
2.67 0.0164 + 1000 Substituting for x=1.068y
4112x1 £68y
1000
0.0164
= 0.0164 +
(1000
4144
0.3961.
x 0.3961 1.068 0.4230 Thus, the molarity of KOT 28 0.4230 and that of HNO, 16 0.3951,
Questions for Next Week
1. I and Y are two inorganic solida X is a black powder, insoluble in water and dilute acido. However, it dissolves 1 hot concentrated hydrochlo de acid, evolving *** greenish yellow gas. Y lu a white deliquescent solid which turns to a: waite.mass. qn Jieatingi A.aolut- ion of Y in hydrochloric acid does not react with hydrogen sulphide; however it gives a white precipi- tate with samonium hydroxide that
rf dissolves in excess alkali. hayrogen sulphide is passed again at thie stage, white precipitate ie
nad. When X and Y are mixed obtained. and heated together in the presence
of cano
SA TE off when & s wdźesolved in het cons.
Bectify an yoobloric acid.
Wnd explain the above observat-
of an organi
This salt; wan. ited the loje part wELD completely oxidized, leaving only the silver metal behind. Tha. follo!vias; oxperimenta...
avaluen were obtained:-
Weight or orucible and lid before.
experiment 1.020gm
Weight of crucible,lid and
contente before heating Woight of
12*3540)
of orcible, lid and contents after heating to red hot and dooler - 11.861g From another sexles of experimente the organic acid was found to gon- tain three replaceable hydozger
Calculate the atoma per molecule. aclecular weight of this organte 2018.
物理科(廿一)
陸永燥。
There is flux leakage the gap.
There is no flux leakaga.
Magnetis Jerom Më 1700' metin.
() we switchers are moved upigaris, the current flows in re- Versed direction, end, the flux also reversos. On raversing · the current the molecular mag neta hayo toarn 180°. The re- luctance for these molecular bag. nete to turn the other way round i know as the hysteresis of
the material.
(e)
length of 10m and cross- section of lag., of that metal copper. possessed a resistance of
178x10-5ohma
Enf. of battery 25 volte mana of copper deposited 1.485g s.o.c. of copper- 3.3 x 104gc-1. (d) Current passing the electro-
Lyto=1.485
3.3 x 10 x 30 x 60 148.5
3.3 x 182,5A
The total resistance of the. of mult
10ohma
-
A: anode
K: cathode (bmsstrny)
S electrolyte (silver salt)
Rh rhepatat assure, constant curre
E: d.c.source (enf)
Precautions
TH. Cican the cathode thoroughly 2. Ensure a small current in
longer time to obtain a hard coating of eliver
{0} \e>c«?«^of silver,
0.0001412
Current = 4k
Tine ekat=125 x 36008 pad. Goruss electrodea
-20-volta.
(1) Mans of silver depoefsed
0.001118x4x12.5x3600
201.24 (11) Resistance of solution, Ri
(111) Cost of alcatricity.
2208x12.5.x 50 cente
jay
= 50:cente
Fower consumed by the second
· tank 100, watt-
x
Its resistance & 20 & 20
Current passing
4 ohms
进
Total current - 4 + 5 = 94
Questiona for next week
(a) A projector lamp is labelled #1000 watts, 200 volta". What does this statement mean?. What reale-
(d)
bomA
ZR2
PAR
R
This is a voltage divider with ourthed. The turrents in each barch are mi resd. The rotentials. at P,B,C,, and Gare given; what are the values of the resistere?
2. The following table gives the rosistivities of platin at
various tenger Luras
tamp-199
起
in
0
100 300 70% 1200:
x10-81.96 9.81 13.7 21. 34.4 48.3 (4) Plet a gmph of resistivity against temperature.
(b) What is the resistance at 1000% of platinum wire which has a registance of 5.0 at 1000? (a) Whst Length of wiius of are腸
and material Botionl area af ronistivita is nasled for the winding of a hesting coil.
36v7
retre at
(1) A metallic cube or 2ep asido has a a resistance of 5x10 olim Pirri tts onistance id it is made. Into a sonductor of unifom gross-section and 100m in length.
(e) Compare the realstances of a copper wire and an iron wire of equal.css-section and pesab. Specific Resletivity of copper
10x10TMбoki-sti
Specific resistivity of imu
1.72 10TMPalm-um Specific density of suppor = 7.8. Specific density of iron = 8,9
八)航業類
照洲航菜
成交數:香港為周一千一百零四萬元 遠東第一千七百二十萬元
·金鎮第一千三百三十三萬元 九赭鸟一百七十九萬元
L975-
(ii) Resistance of electrolyte
between the electrodes
10-28 ohmie
area of each face of an electrode - 50 80 cm.
8
Separation of electrodes 20m
Réad stivity of solution
200 alim-on (111) Heat, produced in solutions
IET=2.5x8x 30x60
2. (B) Faraday's Laws of Electrolysis
"1. the mass of a given element liberated or deposited during electrolysis is proportional to the quantity of electricity pase- ad through the electrolyte.
2. the masses of different element
1iberated by the same quantity of. electricity are proportional to their ohemical equivalent weight翘 (b)
tance of the lamp?.
(b) Explain, with the aid of a ciwuit diagram, how you could use a volt meter and an anneter, to teat the acourecy of the stetement. Written on the lemp.
(c) The lamp is then connected in tum into two different circuits ea shown belong Hats powende now reduced to 100 watts in both BLOOD."... Calculs to the values of A and H.
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