Factor of Rate of Reaction (Graph)

• Excess granulated zinc +

  100 cm³

  2.0 moldm^-3 of hydrochloric acid

• Excess granulated zinc +

  50 cm³

  2.0 moldm^-3 of hydrochloric acid

• Excess zinc powder +

  50 cm³

  1.0 moldm^-3 of hydrochloric acid

• Excess zinc powder +

  100 cm³

  2.0 moldm^-3 of hydrochloric acid

• 
• 
• 
• 

• Use 0.5g calcium carbonate powder

• Use 2.0g calcium carbonate powder

• Add distilled water to hydrochloric acid

• Reduce the temperature of HCl to 40⁰C

• 
• 
• 
• 

• A

• B

• C

• D

• A

• B

• C

• D

What is the catalyst used to increase the rate of reaction between zinc and hydrochloric acid?

• Nickel

• Iron

• Copper (II) sulphate

• Manganese (IV) oxide

• 50 cm³

  1.0 moldm^-3 HCl

• 50 cm³

  2.0 moldm^-3 HNO₃

• 100 cm³

  1.0 moldm^-3 HCl

• 25 cm³

  2.0 moldm^-3 H₂SO₄

• A

• B

• C

• D

• Zinc powder +

  20 cm³

  0.1 moldm^-3 HNO₃

• Zinc powder +

  20 cm³

  0.2 moldm^-3 HNO₃

• Zinc powder +

  10 cm³

  0.2 moldm^-3 HNO₃

• Zinc powder +

  10 cm³

  0.1 moldm^-3 HNO₃