Description : (a) What are fuel cells? Explain the electrode reactions involved in the working of H2 – O2 fuel cell. (b) Represent the galvanic cell in which the reaction Zn (s) + Cu2+ (aq) → Zn2+ (aq) + Cu (s) takes place. -Chemistry
Last Answer : (a) Fuel cells : These cells are the devices which convert the energy produced during combustion of fuels like H2, CH4, etc. directly into electrical energy. The electrode reaction for H2 – O2 fuel cell : (b) The galvanic cell may be represented as Zn (s) | Zn2+ (1M) || Cu2+ (1M) | Cu (s)
Description : What is Galvanic Cell or Valtic Cell ?
Last Answer : : Galvanic or voltaic cells are those cells where electrical energy is produced by chemical reactions of substances inside the cell. In galvanic cells, usually two electrodes made up of two different ... between the two electrolytic solutions . A U -shaped glass contains a solution of KCl salt.
Description : What is meant by Electrochemical cell . Why is it called as galvanic cell and Voltaic cell ?
Last Answer : Ans. :- The cell which converts chemical energy into electrical energy . It is called as galvanic cell and Voltaic cell after the name of scientists who first tried to convert chemical energy into electrical energy .
Description : Define the following : Electrochemistry , Electrolyte , Non-Electrolyte , Electrolytic Cell , Galvanic or Voltaic cell , Electrolysis , Hydrolysis & electroplating.
Last Answer : Ans : (a) Electrochemistry : Electrochemistry is the branch of chemistry which deals with such chemical reactions involving the inter-conversion of electrical energy and chemical energy. Example : Batteries , ... should be a solution of the coating metal, such as its metal nitrate or sulfate.
Description : ___________ converts electrical energy into chemical energy. a) Galvanic cell b) Voltaic cell c) Electrolytic cell d) Leclanche cell
Last Answer : c) Electrolytic cell
Description : What are the half-reactions for galvanic cell with Ni and Mg electrodes?
Last Answer : Ni2+(aq) + 2e- Ni(s) and Mg(s) Mg2+(aq) + 2e-
Description : What reaction occurs at the cathode of a galvanic cell?
Last Answer : Feel Free to Answer
Description : What is the voltage of a galvanic cell made with silver a d aluminum?
Description : What is oxidized in galvanic cell made with silver and nickel electrodes?
Last Answer : The nickel metal(apex)
Description : What are half reactions for a galvanic cell with Zn and Ni electrons?
Last Answer : What is the answer ?
Description : What is the standard notation of a galvanic cell made with magnesium and gold?
Last Answer : Mg(s) | Mg2+(aq) Au+(aq) | Au(s)
Description : What is Galvanic cell ?
Last Answer : A Galvanic cell or voltaic cell or electrochemical cell is a system in which a spontaneous chemical oxidation- reduction occurs and generates electrical energy.
Description : The device used to convert solar energy into electricity is – (1) Photovoltaic cell (2) Daniell cell (3) Electrochemical cell (4) Galvanic cell
Last Answer : (1) Photovoltaic cell Explanation: Sunlight is converted into electricity using photovoltaics (PV). A photovoltaic system employs solar panels composed of a number of solar cells to supply usable solar power.
Description : The device used to convert solar energy into electricity is (1) Photovoltaic cell (2) Daniell cell (3) Electrochemical cell (4) Galvanic cell
Last Answer : Photovoltaic cell
Description : Why do electrons transfer from zinc rods to copper rods in galvanic cells ?
Last Answer : Zinc rods and zinc sulphate solutions are used at the anode of galvanic cells and copper rods and copper sulphate solutions are used at the cathode. Zinc acts as an antidote and copper as an oxidizer, ... . Thus , electrons are transferred from the zinc bar to the copper bar in the mentioned cell.
Description : (3) made cathode and a pure nickel red, the anode Explanation: Electroplating is the deposition by electrolysis of a coating of metal upon a conducting surface. The simplest system makes the object to be ... on the spoon is called reduction and, therefore, the spoon is also referred to as a cathode.
Last Answer : Which of the following is not a method of preparing oxygen? (1) Electrolysis of water (2) Fractional distillation of liquid air (3) Decomposition of potassium permanganate (4) Decomposition of manganese dioxide
Description : Galvanic corrosion cannot be prevented by (A) Cathodic protection (B) Anodic protection (C) Usage of largest possible anodic area (D) Any one of these
Last Answer : Option B