chemistry form 4 - acid and base

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)

Human blood has a pH between 7.35 and 7.45. Which of the following best describes human blood?

• strongly acidic
• slightly acidic
• strongly basic
• slightly basic

Select the name for the following acid: H₃PO₄

• Phosphoric acid
• Phosphorous acid
• Hydrophosphoric acid