Chemistry
Select the correct answer — The aqueous solution of the compound which contains both ions and molecules is:
- Sulphuric acid
- Hydrochloric acid
- Nitric acid
- Acetic acid
Related Questions
A soln. contains Mg2+ ions, Fe2+ ions and Cu2+ ions. On passing an electric current through this soln. which ions will be the first to be discharged at the cathode? Write the equation for the cathode reaction.
(A) Sulphur
(B) Silver chloride
(C) Hydrogen chloride
(D) Copper [II] sulphate
(E) Graphite
State which from A to E fits the description — 'A pink metal is deposited at the cathode during the electrolysis of the soln. of this salt.
Correct the following statements — Lead bromide conducts electricity.
A metal article is to be electroplated with silver. The electrolyte selected is sodium argentocyanide.
(i) What kind of salt is sodium argentocyanide.
(ii) Why is it preferred to silver nitrate as an electrolyte?
(iii) State one condition to ensure that the deposit is smooth, firm and long lasting.
(iv) Write the reaction taking place at the cathode.
(v) Write the reaction taking place at the anode.