Welcome to Schoolngr.com

Home   School   News   C B T   Classroom
Friday, 22 November 2024

RegisterLogin

(a)Give two reasons why aluminium is preferred to copper for making overhead electric ...

(a)Give two reasons why aluminium is preferred to copper for making overhead electric cables.
(ii) Describe briefly the electrolytic extraction of aluminium from purified bauxite.

(b) The diagram below represents an electrolytic cell used for the purification of copper.
(i) Which of the electrodes I and II increases in mass during the electrolysis? Give reasons for your answers
(ii) State with reason the site of oxidation
(iii) Identify III and explain why its colour does not change in intensity during the electrolysis.

(c) Calculate the current in amperes that will deposit 8.00 g of calcium from used CaCl\(_2\) in 1 hour 15 minutes. [Ca = 40.0; 1 Faraday = 96500C]



STAY UPDATED
FOLLOW US ON :


AboutContact usBack to Top
...

Disclaimer
All Views, Names, Acronyms, Trademarks, Expressed on this website are those of their respective owners. Please note that www.schoolngr.com is not affiliated with any of the institutions featured in this website. It is always recommended to visit an institutions or sources official website for more information. In the same vein, all comments placed here do not represent the opinion of schoolngr.com


SCHOOLNGR - © 2020 - 2024 - Tayo Hammed | Terms Of Service | Copyright | Privacy Policy