頁二弟張六第日六十月正年寅丙歷室
WAH KIU YAT PO
-74.C
with the carbun dioxide and the
1986
中學會考試題預習專欄
化學 C廿二)
【明德出版社 4 2
朱有理 提供資料
Revision Exercise
for
Cext. Exam:(1986)
CHEMISTRY (22)
REGINALD, W. CHU.
MILL
& DALE PRESS LTD.
Solution to 9-31
{a
A is copper(II) carbonate.
B is copper(II)
chloride solution,
Cia carbon dioxide.
D is copper(II)
oxide
E is copper.
*+2HCI
(1) Cuddy*
CuCly+H2O+CO2
(2) Cu©D, I>CuO+Cy
its relative:
74.
報日僑華
moisture in kir to
molecular mass is
give hydrated
copper(II)
carbonate which
filet its molecular
formula be (C1402} 4. ( 2 ) = ( 1 2 x 3 + 1x6+
10x2)
#7:
-74 (83-
calculated
above).
A=1
Hence, its, molecular formule is Co
(iv) The three compounds
with this molecular
formula are:-.
(1)CH CH2COO
propanoic acid
(2) CH3COOCHy
methylethanoate
(3) HCOCH2CH3
ethyl methanoate
Solution to 0.32
(a)
(1)
(1)
(3) 20cm0+C
(iii)They are:
Copper(II) nitrate
(2)
and copper(II)
hydroxide:
3
and
M(0)=18 g mol
*M(A) in 1,48 K
water formed on combustion
1.08
18
0.12 g.
in. 1.48 g of Z. am(C) ăn 2.64 g of
CO, formed on
combustion
12x2604
-0.726
„m(0) in 1,48 g of Z
= (1,48-0.72-0.12)
-0.74 g
mole ratio of C:0:0 0.720.12. 0.04
16:
12
0.06: 0.12 0.04
Hence, its empirical formula is C.H,0,
(ii) Mass of 1 mol of Z
-0.296%
24000
When total pressure
on the system is increased, the rutes of both the forward reaction and the backward reactions.. are increased to the
same extent...
When the total
pressure or the
system is increased, its equilibrium positionisrot
affected because the number of moles for 'volumes) of the
gasesous reactants
and that of the
gasesous products. are the same
(ii) Since an increase in
(i)
temperature shift's
the equilibrium
position to the left-hand 'şi de (19(E)), meaning.
that the backward reaction is ̇endothermic. Thus,
the forward. reaction is
exothermic.
It is because".
lead(11) compounds cause leading. poisoning, so, they are not used for painting children's
When exposed to boleted air, copper is slowly oxidized by atmospheric oxygen, The oxide
formed then combines
平治50SL灒酒出來
bluish-green in colour.
(iii)This is because
sulphur trioxide, on dissolving in. water; with forms' hydronium ione,
21130 +504
As the H-07 fons are
responsible for the acidic properties,
an aquebus solution of sulphur trioxide would, turni litmus paper red. (iv) The crystals:
observed are silver metal. This is because, copper, being below zine but above silver in the Acitivity Series, in less reactive than zinc, but more reactive then silver. Thus, it can displace silver from silver nitrate solation but cannot displace zine from
zinc sulphate re
solution.
Solution to 4.33
(1) X is CHCH200
(ethanol)~
(ii)
(ethanoic acid)。 Zia CH COOCH CHy
(ethyl ethanoute
(1): CM CHON+2(0)
(2) CH=CH2OH+PC15
CH3CHyCl+POCI3+HCl
(3) CHg COOff+PC15
CHgCOC1+POCT3+HCk (4) CHgCHOW+CH3COOH-
The organic compound produced in (2) is -chloroethane and
that in (3).is ethanoyl chloride, ́ ́(ii) )Conc. [1,50, acts as
a catalyst.
(iv) Effervescence takes
place and a colour- less gas is evolved. 2CHg CODR+Mg
Mg(CH_CBG)+H}
Gas G is ethene.
(3)
(4)
CH2=CH2+H20
Cons S01 a dehydrating"agent.
The reddish bromine solution would be decolourized: ClignCH2+HF
CHBTCH, Br
1,2-dibromoethane
Carbon dioxide turns! limewater milky because of the formation of the insolube white calcium carbonate. Ga{ Oil) +C2
However, excess
carbon dioxide turns the resulting mixture colourless again because it converts calcium carbonate into soluble calcium hydrogen carbonate,
CaCO3+HO+CDg→
Ca(NGO)z
(ii)Carbon dioxide docs.
not support
combustion soit extinguishe's a burning candle. However, when a
magnesium is burning,
it gives out a Jurge amount of heat. The heat thus produced then decomposes carbon dioxide, liberating, the oxygen
in which it can continue to burn for
a short while.
電
腦
(廿二)
明德出版社 李明偉 提供資料
Cert, Exam. (1986)
·COMPUTER (22}
MWG. LI
MILL & DALE PRESS LTD.
Unit 22. Simple sorting.
Algorithm
-期星
An array A consists of 5 numbers. We wish to sort A. from High to low and put the sorted list in
A simple algorithm may be described in the following steps.
(a) Find the largest value
日四廿月二年六八九一公年五十七國民葘中刊週車汽育教
in A, call it B. In addition, keep track
of the position in A where. B. was found.
The following 'BASIC
program can perform the
algorithm mentioned above,
.:
10 DIM A(10), 8(10)
PRINT "ORIGINAL LIST”. FOR I - 1 TO 5
(b) Put R into the first
position of the new array C, that is, set C(1) = B.
20
30
40
READ, A (I)
50
PRINT A (1)
(e):Go back to arroy A.
to
60
NEXT I
the position where B was Lound, and put
into this position a very small number.. (one that is smaller than any value in A) fd) Continue the step (0)
70
.:.80
POR I 1 TO 5
90
LARGE = A(1)
100
110
FOR F- 2 TO-5.
120
to (c) and putting the next largest value into C(2), and go on, until all the original
130
LARGE → A(J)
140
150.
NEXT. J
160
C(1) LARGE.
N. values of array A
are put into array C7
If we
日 arrayA
conteins the five values.
have
7, 2, 3, 4. That is
A(1)
☐ 6
A(2) .7
A(3) - 2
A(4) -
3
A(5)
and 0 is a small number we use since it is
smaller than any of the values in A.
In the first round, we set
C(1) = 7, A(2) - 0. Therefore now we have
C(1) 7
A(1), A(2)
0,
A(3) 2, A(4) = 3. A(5) = 4
In the second round we C(2) 6A(1) = 0,
The array A and C become
C(1) 7
A(1) 0
·A(3) = 2
;4(5) = 4
C(2)..
A(2) = 0 A(4) = 3.
The next search produce
G(1) 7 C(2) = 6 C(3) 24
A(1) = 10A(2) - V A(3) 2
A(5) = 0
The fourth time we get
\C(1)
A(1) 0 A A(3):2 A(4) A(5) 0
The final time we get
C(3
C(5) 2:
·A·(1) O A(3) 0
·A(5) 0
∙A(2) A(4
Here, is the sort arra
and coutaing the elements of A from high to low.
170
IF LARGE >=Å(5) THEN 150%
A(K) = 0
180:TEXT I
· 190 PRINT "SORTED LIST"
2001 FORL=
1 TO 5
PRINT C(L)
210
220
NEXT L
230
DATA 6, 72,
240
END.
經濟(廿二)
明德出版社
陳勵德
提供資料 王璐光
Revision. Exercise
for
Cart. Exum (1986)
ECONOMICS (22):
K.K. "WONG & L.T. CHAN
MILL & DALE PRESS TD.
The National Income (conted
Use of National Income Statistics
National income. measures. the flow of goods and services produced, its level can be taken as an indicator: of the well-being of the economy.
The following uses are the most important:
a. It can be used a's a basis for assessing and comparing the standard of living. When considering the
standard of living of o people at any given time we must remember, the difference between money incomes and real incomes, and must remember the distribu− tienniacome. A
wealthy nation may
Bave ita wealth
distributed evenly or
uneveuly. In comparing
changes in the atandard of living
over the years the total population affects the average: income, so that average income per head Will be a more valuable indication. of living standard that total National Income.
b. It can be used as an aid to government in planning the economy. The "natiökal income
figures are a useful base from which to start the control of measuring what that income is we can see what is needed, and what is possible to achieve in the future. The government becomes aware of the growth areas in the economy,. and the areas where growth is less than nverage.
Limitations of National
Income
Each measure of
national income is a
rough measure of the:
level of economy activity
of the economy. However,
series of misinter-
pretations may result, The limitations are summarized as follows: a. Information is.
incomplete, some income not being. recorded, as for example when a person does a job in his spare time for a friend or neigh our.. National income does not include all good's and services as it excludes the value of most goods and services that does not go through markets. Care must be taken not to count the same · article twice, for example, both the rav material and the finished product must not be counted as this would result in the raw material being counted twice, vi National income does not dessure human welfare and the " quality of life. Ite does not indicate the distribution of income. among people. A transfer of money from rich to poor by.
voluntary contribution.
or by government
poicles may change"
welfare without changing national
命革新釀醖意快
如琨。
通用汽車大展拳脚
香港近年流行建箎熟書,平時缺乏運動的女
摸熟了。快意退出美國市事的主 歐洲的市场,經之錘之,現在已 國市場,集中力量,發展本昭和 快意皐在多年以前,决定退出美 銷量,似乎減少了很多,事實上 「快意」汽車在香港市場的
·快兼第二型
. 都會一星期一、兩次「建康無J.,舒展一下
歐洲的汽車公司,已密 牲的發展,因爲福特和的計劃而起了爭論。不 切注意兩家汽車公司談,內部爲了提前推出新車 在便可拉近。目前很多,更大的歐洲汽車市場。 的合作,逐漸雙方的合作,進}步便可搶奪 ,以及其他在技術方面 願見到福特和決意和衷 SAE 1000RR PREKECHNICK 意製造最新設計的F) 汽車可節省成本,因此 公司很可能進行初步的的合作,例如福特委任快 去,談刊合作,尚無結果,不過看情形兩家汽車 .開快意汽車公司
女方由於利茲問題,暫時仍拖 在與福特警判在歐洲合作,雖然
·意已可重新站起來,而且目前正
分流行的汽車。: ;以現在發展的情形推測,快
的最小型快意,在意大利却是十 行小型汽车;在香港是不易見到. 及大型汽車的牌費極晝,故只流 其是意大利未國市場,因汽油税 相信是由於歐洲的環境不同,尤 煤鉅大。不過,最主要的原因 -. 銷網,而且在且傳方面,費用極 媒推銷,領亞組攝非常雅大的推
·要原因,除了銷量減少,而在英
推得快不
间,可謂明智之舉。 一,利用南韓的廉價勞動力,採取聯管 侵。於是通用汽車公司立刻急謀對策 [市場之大,而又受到外國貨品嚴重不 一,日本佔一百〇七億,足見美國汽車 九十二億美元,其中歐洲佔五十三億 事隔美国汽車貿易逆差高達一百, 將檐入美國。面對宮前日益激烈的動 南韓每年聯合生產逾十六萬輛汽車,其中約數
汽車運動保養秘訣 南韓大宇汽車公司達成)項協議,在明年開始在 “中不可成缺的一環。 據消息透芽,美國通用汽车公司(GM)和主+汽車如人一樣, 經常作例行「運動保養
亞社
路邊社消息
亞
主在夏季降將東在高速公路不停行駛 「運動耱序」分鎶夏季和冬季車 更有需要定期作「運動程序了】。.
·美國汽聚合建議車主應該每兩星期將閣下座 全年行事哩數不超過六千哩的汽車就 期只把開車常作有這般在隔日使用,
·多車主平時將車停放於停車場,一星
·有害物體。至於香港地小車多,很 鳥「運動」一次,以避免汽車引擎
售炁略。看來通用汽車公司確是雄心勃勃,務求以三波或以下低波行車的最高安全降速鳥就,如 「並已物色了一百個商人,計劃明年再物色一首七. 引擎行熱後,致以三波,我乎汽車有沒有四沒及 十個,同時着手聘請推角經理,訂定在美國的銷.五波)行車三至五哩。車主可依照汽車說明書內 【方式改善國內汽車生產不低。 十五至二十哩,在冬季則需行駛更長,大約三十 日前該廠與紐約一個代理商商討廣告事宜,至四十埋,會引擎吸入更多空氣及「熱身」,當
·果沒有說明,以五十五噬以下行車則一穩陣娈
X X X X
MIKA VIRAYA mom min mAAAAAAA
不同,因此去年兩家汽妺風增壓,可發出五| 「多工程設計方面,意見 酷礒注汽油系統,監 方的壯計工程師,在很「馬力及雙活響凸輪,另 料的合約。但是由於性,可發出一二〇匹利動 簽訂了技術合作交換實軸,另配喷注汽油系统 先牌汽車和紳實五葙力,二公升雙活凸輪
·雖然該屬於快意的一油器,可發出九
快意第三型. 分之三十,大規模製造一不老!盘量設法提早推這競爭激烈的市事立度及設備,將類似目前同。 快意聯合起來,在歐洲過由於市場的壓力,快出新款新車,否則設計一些。不過據行內人土的, 車公司推出的新車,基五匹馬力的引菜。 ........在意大利及歐洲甚爲梅 的鈴車量達到佔全部百|汽車方面的高冠不役過舊的汽車,無法可在估計,新的失意汽車外本的設計,並非完全相,油液計量分爲發出 汽車代理你開了不少車新車,將代替目前的R是代替目前快意的A R..壓設備,可登出一〇五 「式快意房東亦銷香港,於一九七二年推出的一 FGATAB-12 GENTA KE0) 26BERDEOSE 歐洲和日本,現已謂的「第一」°CUNO|故快意推出新車,可利也是二.五公升汽缸容 璐號「第三型」的「佈的「第四型」,新車汽缸及另配汲極鼓同地 用領先的設計,快意豆 · 直接噴注油禨進入 ,領先附屬的快意,,公升汽缸容盩及另一種
七十五匹馬力:二十五
KA C
“C設計
特車|明活荷
勒卡星的李
之汽联
羊山。
ECCA
DEL
LAC
國精神之我現。自從底大大媽屁,利潤亦高, 流人士歡迎,此為菇街車身製造之市事在美國
新車減輕製造成本
四種汽油引擎包括一活明星及社交活躍之上一特律之大難車沒落後,
統慎反尾車車距蓬開勒特卡
汽車,將配計和補先 快意的「第四獎」
及本港的市場, 的型式,更可避棗 | MA型,即是比較黃色 「舞「第四型」的CRO 意將於今年內先推出稍
一方面可挂輕製造成本 不過有消息傳來
減輕汽車的蜇盘,而另 塑料鎘原料,一方面可 |量採用熱壓製造的各種 說:快意的新車,將大 油系統的引擎。梯報導 擎和一,六分至暗汽 七公升汽缸容發油渣引 一部农轼的引擎,及一 一能一.一及一.三汽品均已推出新車。 I型快意的新車,將可 頒先和瑞典的神衰, 力的引擎;汽紅容二
:「第一」及「第三盤設計相同的配件。
「RTHERMA後
汽車版
逢星期一出版
PAGE:
反光程度。...
·統软亦有保狸作用。擋風玻璃之角度減低風阻隔 泵把深用弹性極好的質料製造,車身側近低部之 S.E與一般跑車設計一樣!膈身且重點較低
輕巧,開關接合之性能極佳,使用與否,皆不損 ,除性能超卓外,視覺形象十分活潑。車蓮堅都
·碌令」爲配合S L憚身暴動及難西之車身而設計
用之二〇五義大五V.R一五車房,更輕更快,「 * 此車之最窄藉灣闊位十點三四米。全車系所
四公开,二〇公唯一一點五公升。一 畫每百公唯一五黏大公升,每小時九十公噸,九 五公升〔高低五點五公升)。一般市區速度耗油 配合,可減低燥香及脫氣污染。两貯油量七點
·多用途電子控制單位,與催化器及無感器互相 以至碶輕巧合金製成,使燃料流轉更順暢,準 保證高性能及低耗油量。恢流式油缸設計,頭部 子點火及電子源挂射系統均由微型電腦控制 匹馬力。四波段,最高恩每小時二二五公卵 EOS. L八油。八引路。四五
平治SL開蓬跑車渾身是勁
車;無論祼咗或者银灰,俱是魅力是沒法擋。. EXEN 100 BI10 HOOS LEWE 平治經典之作 S: L系列已面世近三十年。要
車之一流形想....
九油點
凡不派氣然果「藉是」勒特卡
等上迦徵類迷
貸款卡也 極小特區場
在今肤摻年份
卿,了根口
尤其自列根上台後,更 經濟,但也有一滾獨特 洒,亦不比日本瑕輕盈 硬明,不及歐洲車之谦
|華山之情形是如此。 一根出身之荷李活、蒜 的需求,最低阻我在列 是刺激了美國對本土車 美國車外型十分之
FLEETWO
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