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WorksheetsKIMIA T4 BAB 3 ( Konsep mol,formula & persamaan kimia)
Total questions: 25
Worksheet time: 13mins
Gas ammonia terurai mengikut persamaan berikut.
Ammonia gas dissociates according to the following equation.
2 NH3(g) à N2(g) + 3H2(g)
Berapakah jumlah isipadu gas yang terhasil jika 112 cm3 gas ammonia terurai?
[1 mole of gas occupies 22.4 dm3 at STP]
What is the total volume of gas produced if 112 cm3 of ammonia gas dissociate at STP?
[1 mol of gas occupies 22.4 dm3 at STP]
22.4 cm3
67.2 cm3
89.6 cm3
224.0 cm3
Apakah kation yang hadir dalam leburan plumbum (II) klorida
What is the cation present in molten lead (II) chloride?
H+
I-
Pb2+
OH-
Jisim bagi air bromin ialah 120g. Apakah bilangan mol bagi air bromin?
[jisim atom relatif : Br = 80]
Mass of bromine water is 120g. What is the number of moles of bromine water?
[Relatif atomic mass : Br = 80]
0.67 mol
0.75 mol
1.33 mol
1.50 mol
Persamaan berikut mewakili satu tindak balas kimia.
Na2CO3(ak) + CaCl2(ak) 🡪 CaCO3(p) + 2NaCl(ak)
Penyataan manakah yang betul?
The following equation represents a chemical reaction.
Na2CO3(aq) + CaCl2(aq) 🡪 CaCO3(s) + 2NaCl(aq)
Which statement is correct?
Dua mol natrium karbonat bertindak balas dengan satu mol kalsium klorida
Two moles of sodium carbonate react with one mole of calcium chloride
Hasil tindak balas ialah pepejal kalsium karbonat dan larutan natrium klorida
The products are solid calcium carbonate and sodium chloride solution
Bahan tindak balas ialah pepejal natrium karbonat dan larutan kalsium klorida
The reactants are solid sodium carbonate and calcium chloride solution
Dua mol kalsium karbonat dan satu mol natrium klorida terbentuk
Two moles of calcium carbonate and one mole of sodium chloride are formed
Apakah unit bagi isi padu molar gas?
What is the unit for molar volume of gas?
g mol-1
dm3 mol-1
mol dm-3
g dm-3
Antara persamaan kimia berikut, yang manakah diseimbangkan dengan betul?
Which of the following chemical equations is balanced correctly?
Fe2O3 + 2Al → Al2O3 + Fe
2C3H6 + 3O2 → 6CO2 + 6H2O
BaCl2 + K2SO4 → BaSO4 + 2KCl
(NH4)2SO4 + NaOH → Na2SO4 + H2O + 2NH3
Rajah menunjukkan perwakilan piawai bagi atom X dan atom Y.
Apakah jisim molekul relatif bagi sebatian yang terbentuk antara atom X dan atom Y?
Diagram shows standard representation for atom X and atom Y.
What is the relative molecular mass of the compound formed between atom X and atom Y?
17
15
10
8
Antara yang berikut, pasangan nama kimia dan formula kimia manakah adalah betul?
Which of the following chemical name and chemical formulae are correctly matched?
NaO
Natrium oksida
Sodium oxide
MgCl
Magnesium klorida
Magnesium chloride
(NH4)3PO4
Ammonium fosfat
Ammonium phosphate
Pb2Br
Plumbum(II) bromide
Lead (II) bromide
Apakah definisi paling tepat bagi jisim molar?
What is the best definition for molar mass?
Jisim satu mol bahan
Mass of one mole of substance
Jisim relatif bahan tersebut
Relative mass of a substance
Jisim purata satu atom
Average mass of an atom
1/12 x Jisim satu atom karbon
1/12 x mass of one carbon atom
Rajah menunjukkan formula kimia bagi satu sebatian. Apakah nama bagi sebatian itu mengikut sistem penamaan IUPAC?
Diagram shows the chemical formula of a compound. What is the name of compound according to the IUPAC nomanclature?
Ferum oksida
Iron oxide
Ferum(II) oksida
Iron(II) oxide
Ferum(III) oksida
Iron (III) oxide
Antara yang berikut, ion manakah yang akan membentuk sebatian XZ2?
Which of the following ions will form compound XZ2?
X- dan Z2+
X- and Z2+
X2- dan Z+
X2- and Z+
X+ dan Z2-
X+ and Z2-
X2+ dan Z-
X2+ and Z-
Rajah menunjukkan susunan radas untuk menentukan formula empirik bagi suatu logam oksida.
Antara yang berikut, bagi logam manakah kaedah ini boleh digunakan untuk menentukan formula empirik oksida logamnya?
Diagram shows the apparatus set-up to determine the empirical formula of a metal oxide.
Which of the following metal can this method be used to determine its oxide’s empirical formula?
Stanum
Ferum
Magnesium
Kuprum
Antara berikut, yang manakah benar?
Which of the following is true?
I dan II
I and II
II dan III
II and III
II dan IV
II and IV
III dan IV
III and IV
Antara yang berikut, pernyataan manakah yang menerangkan sebab karbon-12 dipilih sebagai rujukan piawai untuk
menentukan jisim atom relatif dengan paling tepat?
Which of the following statements explains the reason of carbon-12 chosen as the standard reference for determining the relative atomic mass most accurately?
Mempunyai tiga isotop
Has three isotopes
Unsur bukan logam
Non-metal element
Tidak mudah bergabung dengan unsur-unsur lain
Not easily combines with other elements.
Pepejal pada suhu bilik dan mudah dikendali
Solid at room temperature and can be handled easily
Formula bagi ion sulfat adalah SO42− dan ion nitrat adalah NO3−. Jlka formula garam sulfat bagi M ialah MS04,
apakah formula garam nitrat bagi M?
The formula for a sulphate ion is SO42− and for a nitrate is NO3−. If the formula of the sulphate salts of M is MS04, what is the formula of the nitrate salt of M?
MNO3
M2NO3
M(NO3)2
M(NO3)3
Sebatian manakah yang mempunyai formula empirik CH20?
Which compound has the empirical formula of CH20?
HCOOH
CH3COOH
CH3COOCH3
HCOOC2H5
Rajah di atas menunjukkan susunan radas bagi menentukan formula empirik bagi kuprum(II) oksida. Gas hidrogen kering mesti dialirkan melalui radas untuk beberapa minit sebelum pemanasan kuprum(II) oksida.
Apakah sebab tindakan ini diambil?
Diagram above shows the apparatus set-up to determine the empirical formula of copper(II) oxide. The dry hydrogen gas must be flowed through the apparatus for several minutes before heating the copper(II).
oxide. What is the reason for this action to be taken?
Untuk memastikan semua kuprum(II) oksida telah bertukar kepada kuprum
To ensure all the copper(II) oxide has changed into copper
Untuk memastikan semua udara dikeluarkan supaya letupan dapat dielakkan
To ensure all air has been removed so that explosion can be prevented
Untuk mengelakkan kuprum daripada bertindak balas dengan udara bagi membentuk kuprum(II) oksida
To prevent copper from reacting with air to form copper(I I) oxide
Untuk mengelakkan air daripada mengalir ke arah piring parselin yang panas dan meretakkan tiub pembakaran
To prevent the water from flowing towards the hot porcelain dish and cracks the combustion tube
Rajah di atas menunjukkan peratusan mengikut jisim bagi unsur dalam alisin iaitu sebatian yang menyebabkan bau
pada bawang putih. Apakah formula empirik bagi alisin?
[Jisim atom relatif: H = 1, C = 12, O = 16. S = 32]
Diagram above shows the percentage by mass of elements in the allicin, which is a compound that causes
the smell in garlic. What is the empirical formula of allicin?
[Relative atomic mass : H = 1, C = 12, 0 = 16, S = 32]
CHSO
C6H10S2O
C12H5S2O
C12H10S4O
Sebatian manakah yang mempunyai formula yang betul?
Which compound has the correct formula?
Barium nitrat - Ba(N03)2
Barium nitrate - Ba(N03)2
Plumbum(II) oksida - Pb02
Lead(II) oxide - Pb02
Kuprum(II) oksida - Cu20
Copper (II) oxide - Cu20
Argentum karbonat - AgC03
Silver carbonate - AgC03
Formula kimia manakah yang dinamakan dengan betul berdasarkan sistem penamaan IUPAC?
Which chemical formula is correctly named according to the IUPAC nomenclature system?
MgO - Magensium oksida
MgO - Magensium oxide
SO3 - Sulfur oksida
SO3 - Sulphur oxide
CO - Karbon oksida
CO - Carbon oxide
Fe2O3 - Besi oksida
Fe2O3 - Iron oxide
4.80 g unsur P bertindak balas lengkap dengan 3.20 g unsur Q.
Apakah formula empirik bagi sebatian yang terbentuk?
[Jisim atom relatif P=24; Q=16]
4.80 g of element P reacts completely with 3.20 g of element Q.
What is the empirical formula of the compound produced?
[Relative atomic mass P=24; Q=16]
PQ
P2Q
PQ2
P2Q2
Berikut ialah satu persamaan kimia:
H2SO4(ak) + 2KOH(ak) → K2SO4(ak) + xH2O(ce)
Apakah nilai x?
below is the chemical equation
H2SO4(ak) + 2KOH(ak) → K2SO4(ak) + xH2O(ce)
what is the value of x
1
2
3
4
Rajah 3 menunjukkan susunan radas untuk menentukan formula empirik oksida logam.
Diagram 3 shows the set up of apparatus to determine the empirical formula for metal oxide.
Logam yang manakah yang paling sesuai digunakan dalam rajah itu?
Which of the following metals is most suitable to be used in the diagram?
Plumbum
Lead
Argentum
Silver
Kuprum
Copper
magnesium
magnesium
Rajah 1 menunjukkan susunan radas bagi menentukan formula empirik bagi kuprum(II) oksida.
Diagram 1 shows the apparatus set-up to determine the empirical formula of copper(II) oxide.
Gas hidrogen kering mesti dialirkan melalui radas untuk beberapa minit sebelum pemanasan kuprum(II) oksida. Apakah sebab tindakan ini diambil?
The dry hydrogen gas must be flowed through the apparatus for several minutes before heating the copper(II) oxide. What is the reason for this action to be taken?
Untuk memastikan semua kuprum(II) oksida telah bertukar kepada kuprum
To ensure all the copper(II) oxide has changed into copper
Untuk memastikan semua udara dikeluarkan supaya letupan dapat dielakkan
To ensure all air has been removed so that explosion can be prevented
Untuk mengelakkan kuprum daripada bertindak balas dengan udara bagi membentuk kuprum(II) oksida
To prevent copper from reacting with air to form copper(II) oxide
Untuk mengelakkan air daripada mengalir ke arah piring porselin yang panas dan meretakkan tiub pembakaran
To prevent the water from flowing towards the hot porcelain dish and cracks the combustion tube
Berapakah bilangan atom dalam 8.5 g ammonia gas, NH3?
[Jisim molar NH3 = 17 ; Pemalar Avogadro = 6.02 x 1023 mol-1]
What is the number of atoms in 8.5 g of ammonia gas, NH3?
[Molar mass of NH3 = 17 ; Avogadro constant = 6.02 x 1023 mol-1]
0.5 x 6.02 x 1023
0.5 x 4 x 6.02 x 1023
8.5 x 6.02 x 1023
8.5 x 4 x 6.02 x 1023
