The diagram below is a cross section of a dry cell. Study it and answer the questions that follow.

      

The diagram below is a cross section of a dry cell. Study it and answer the questions that follow.

(i) Write the equation for the reaction in which electrons are produced.
(ii) The Zinc can is lined with Ammonium Chloride and Zinc Chloride paste. What would happen if the mixture was to become dry? Give reason.

  

Answers

---

i)
ii)-The cell does not produce any current/stops working
-Because the ions are not mobile, the solid is a non-electrolyte

---

sharon kalunda answered the question on March 26, 2019 at 12:22

Next: A body has 16 Joules of kinetic energy. What would be its kinetic energy if its velocity was double?
Previous: The figure below shows a loaded wheelbarrow. Indicate and label on the diagram three forces acting on the wheelbarrow when a worker is just about...

View More Chemistry Questions and Answers | Return to Questions Index

Exams With Marking Schemes

• Grade 1
• Grade 2
• Grade 3
• Grade 4
• Grade 5
• Grade 6
• Grade 7
• Grade 8
• Grade 9
• PP1
• PP2
• Playgroup
• Form 1
• Form 2
• Form 3
• Form 4

Related Questions

---

• The electron arrangement of ions Q^2- and R³⁺ are as 2, 8, 8, and 2,8respectively. (a) Write the electron arrangement of the elements Q and R...(Solved)
  

  The electron arrangement of ions Q^2- and R³⁺ are as 2, 8, 8, and 2,8respectively.
  (a) Write the electron arrangement of the elements Q and R
  (b) Write the formula of the compound that would be formed between Q and R

  Date posted: March 26, 2019.  Answers (1)

• Study the flow chart below and answer the questions that follow.(Solved)
  

  Study the flow chart below and answer the questions that follow.
  
  i) Name the process in step I and the conditions for the reaction in step I
  Name of process
  Conditions
  ii) Identify substance N
  iii) Give
  I. One disadvantage of the continued use of substance such as M
  II. The name of the process that takes place in step III
  III. The name and structural formula of the substance Q
  Name
  Structural formula

  Date posted: March 26, 2019.  Answers (1)

• Below is a set up of the apparatus that is used to prepare sulphur trioxide. Name I. – Gas N - II. – Gas M – III. – Catalyst...(Solved)
  

  Below is a set up of the apparatus that is used to prepare sulphur trioxide.
  
  
  Name
  I. – Gas N -
  II. – Gas M –
  III. – Catalyst –
  IV. – Solid Y –

  Date posted: March 25, 2019.  Answers (1)

• What factors should be considered when siting a plant to manufacture sulphuric acid?(Solved)
  

  What factors should be considered when siting a plant to manufacture sulphuric acid?

  Date posted: March 25, 2019.  Answers (1)

• List down different types of amorphous sulphide.(Solved)
  

  List down different types of amorphous sulphide.

  Date posted: March 25, 2019.  Answers (1)

• Why is it necessary to vulcanise natural rubber before use?(Solved)
  

  Why is it necessary to vulcanise natural rubber before use?

  Date posted: March 25, 2019.  Answers (1)

• Name one substance used for vulcanisation of rubber.(Solved)
  

  Name one substance used for vulcanisation of rubber.

  Date posted: March 25, 2019.  Answers (1)

• List four ammonium salts and state the uses of each.(Solved)
  

  List four ammonium salts and state the uses of each.

  Date posted: March 25, 2019.  Answers (1)

• Explain how carbon monoxide is lethal when one inhales.(Solved)
  

  Explain how carbon monoxide is lethal when one inhales.

  Date posted: March 25, 2019.  Answers (1)

• State six uses of carbon dioxide.(Solved)
  

  State six uses of carbon dioxide.

  Date posted: March 25, 2019.  Answers (1)

• How many molecules, by avogadro’s number does 0.32g of oxygen gas has?(Solved)
  

  How many molecules, by avogadro’s number does 0.32g of oxygen gas has?

  Date posted: March 25, 2019.  Answers (1)

• What mass of Lead (II) nitrate could contain 13g of Lead?(Solved)
  

  What mass of Lead (II) nitrate could contain 13g of Lead?

  Date posted: March 25, 2019.  Answers (1)

• How many calcium ions and chloride ions are in 1 mole of calcium chloride, CaCl₂?.(Solved)
  

  How many calcium ions and chloride ions are in 1 mole of calcium chloride, CaCl₂?.

  Date posted: March 25, 2019.  Answers (1)

• Calculate the number of nitrogen molecules in 560cm³ of nitrogen gas at s.t.p.(Solved)
  

  Calculate the number of nitrogen molecules in 560cm³ of nitrogen gas at s.t.p.

  Date posted: March 25, 2019.  Answers (1)

• How many grams of Sulphur contain 3.0 x 10²¹ atoms?.(Solved)
  

  How many grams of Sulphur contain 3.0 x 10²¹ atoms?.

  Date posted: March 25, 2019.  Answers (1)

• 100cm³ of a gas at r.t.p was cooled to 60cm³. Calculate the new temperature of the gas in ⁰C if the pressure is kept constant.(Solved)
  

  100cm³ of a gas at r.t.p was cooled to 60cm³. Calculate the new temperature of the gas in ⁰C if the pressure is kept constant.

  Date posted: March 25, 2019.  Answers (1)

• Rates of diffusion of two gases A and B are in the ratio 2:1. If the molecular mass of gas A is 16g. Find the...(Solved)
  

  Rates of diffusion of two gases A and B are in the ratio 2:1. If the molecular mass of gas A is 16g. Find the molecular mass of B.

  Date posted: March 25, 2019.  Answers (1)

• In an experiment, it was found that a mole of a gas occupied 24.0dm³ at 20⁰C and atmospheric pressure. What volume would it occupy at...(Solved)
  

  In an experiment, it was found that a mole of a gas occupied 24.0dm³ at 20⁰C and atmospheric pressure. What volume would it occupy at S.T.P?

  Date posted: March 25, 2019.  Answers (1)

• Two gases, A and B have densities of 0.18gdm^-3 and 2.90gdm^-3 respectively. If they diffuse under the same conditions, what are their relative rates of...(Solved)
  

  Two gases, A and B have densities of 0.18gdm^-3 and 2.90gdm^-3 respectively. If they diffuse under the same conditions, what are their relative rates of diffusion.

  Date posted: March 25, 2019.  Answers (1)

• At 27⁰C, nitrogen has a volume of 650cm³ under pressure of 980mmHg. What would be its volume at the same temperature but at a pressure...(Solved)
  

  At 27⁰C, nitrogen has a volume of 650cm³ under pressure of 980mmHg. What would be its volume at the same temperature but at a pressure of 760mmHg?.

  Date posted: March 25, 2019.  Answers (1)