Chemistry
Element X is a metal with a valency 2. Element Y is a non-metal with a valency 3.
(a) Write equations to show how X and Y form ions?
(b) If Y is a diatomic gas, write the equation for the direct combination of X and Y to form a compound.
(c) If the compound formed between X and Y is melted and an electric current passed through the molten compound, the element X will be obtained at the …………… and Y at the …………… of the electrolytic cell.(Provide the missing words)
Related Questions
State which electrode: anode or cathode is the oxidizing electrode. Give a reason for the same.
M2O is the oxide of a metal 'M' which is the above hydrogen in the activity series. M2O when dissolved in water forms the corresponding hydroxide which is a good conductor of electricity.
(i) State the reaction taking place at the cathode.
(ii) Name the product at the anode.
(a) Draw a labeled diagram to show how iron is electroplated with copper.
(b) Which solution is preferred as electrolyte, CuSO4 or FeSO4?
(c) Describe what happens to the iron object and the copper rod.
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.