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Worksheetschemistry form 4 - acid and base
Total questions: 19
Worksheet time: 38mins
The following equation represents a neutralisation reaction.
Persamaan berikut mewakili tindak balas peneutralan.
Acid + Base ----> Salt + Water
Asid + Bes ----> Garam + Air
Which of the following pairs of reactants produce a neutralization reaction?
Antara pasangan bahan tindak balas berikut, yang manakah merupakan tindak balas peneutralan?
Sulphuric acid and calcium carbonate
Acid sulfurik dan kalsium karbonat
Nitric acid and magnesium oxide
Asid nitrik dan magnesium oksida
Hydrochloric acid and sodium sulphate
Asid hidroklorik dan natrium sulfat
Hydrochloric acid and sodium sulphate
Asid hidroklorik dan natrium sulfat
Which of the following is a suitable indicator to determine the end point for the neutralisation reaction between 0.1 mol dm-3sulphuric acid and 0.1 mol dm-3 sodium hydroxide solution?
Antara berikut yang manakah merupakan petunjuk yang sesuai untuk menentukan takat akhir bagi tindakbalas peneutralan di antara asid sulfurik 0.1 moldm-3 dan larutan natrium hidroksida 0.1 mol dm-3?
Red litmus paper
Kertas litmus biru
Blue litmus paper
Kertas litmus merah
Phenolphtalein
Fenolftalein
Tetrachloromethane
Tetraklorometana
40 cm3 of 1.0 mol dm-3 hydrochloric acid is neutralized by 25cm3 of barium hydroxide solution. What is the molarity of barium hydroxide?
40 cm3asid hidroklorik 1.0 mol dm-3 dineutralkan oleh 25cm3 larutan barium hidroksida.
Berapakah kemolaran larutan barium hidroksida?
0.625 mol dm-3
0.800 mol dm-3
1.600 mol dm-3
3.500 mol dm-3
A dibase acid, H2SO4 has the concentration of 0.5 mol dm-3. What is the volume of potassium hydroxide, KOH, 1.0 mol dm-3 that can neutralize 25.0 cm3 of the H2SO4 acid solution?
Satu acid dwibes, H2SO4mempunyaikepekatan 0.5 mol dm-3 .Berapakah isipadu kalium hidroksida, KOH, 1.0 mol dm-3 yang dapat meneutralkan 25.0 cm3 larutan H2SO4?
6.25 cm
12.50 cm3
25.00 cm3
50.00 cm3
The chemical equation shows the reaction between excess sulphuric acid solution with sodium hydroxide solution.
Persamaan kimia menunjukkan tindak balas antara larutan asid sulfurik berlebihan dengan larutan natrium hidroksida.
2NaOH (aq) + H2SO4 (aq) ----> Na2SO4 (aq) + 2H2O
12.5 cm3 of 0.5 mol dm-3 sulphuric acid solution neutralises 50 cm3 of sodium hydroxide. Determine the concentration of the sodium hydroxide solution.
12.5 cm3 0.5 mol dm-3 larutan asid sulfurik meneutralkan 50 cm3 natrium hidroksida. Tentukan kepekatan larutan natrium hidroksida.
0.10 mol dm-3
0.20 mol dm-3
0.25 mol dm-3
0.50 mol dm-3
Which of these is a property of acidic solutions?
they taste sour
they feel slippery
they are in many cleaning products
they taste bitter
The (a) scale measures the strength of acids and bases.
NaOH may be found in drain cleaners and as a component of soaps. Is NaOH an acid or a base?
Acid
Base
Neither (Neutral)
Which is NOT a property of acids?
slippery
pH below 7
react with metals
contain H1+ ions
Which is NOT a property of bases?
caustic
slippery
pH below 7
bitter
A farmer found that the soil in his garden is too acidic.
Which substance is suitable to reduce the acidity of the soil?
Seorang petani mendapati tanah di kebunnya sangat berasid.
Bahan manakah yang sesuai untuk mengurangkan keasidan tanahnya?
Sodium chloride
Natrium klorida
Calcium oxide
Kalsium oksida
Barium nitrite
Barium nitrat
Potassium iodide
Kalium iodide
A salt is formed when nitric acid combines with sodium hydroxide. What are present in the salt that forms?
Sodium chloride
sodium ions and nitrate ions
only sodium ions
only nitrate ions
What are the products if magnesium reacts with hydrochloric acid?
Magnesium chloride + Hydrogen
Magnesium sulfate + Hydrogen
Magnesium oxide + Hydrogen
Magnesium sulfide + Hydrogen
Which of the following salts is prepared by precipitation method?
sodium chloride
barium sulfate
calcium nitrate
ammonium carbonate
What is the scientific name for salt?
Sodium chloride
Hydrochloric acid
Acetic acid
Potassium chloride
Salt X soluble in water produced blue colour.
Possibly salt X contains....
Iron(lll) ion
Iron(ll) ion
Copper(ll) ion
Zinc ion
When hot this substance in yellow colour. But when cold it turns to white colour. This is
Lead(ll) oxide
Zinc oxide
Iron(lll) oxide
Iron(ll) oxide
