The volume of 40V hydrogen peroxide to oxidise 0.2moles of black lead sulphide to white lead sulphate
Answers
Answer:
mark my answer as brainliest then I will start following you
Explanation:
The electron arrangement ions X3- and Y2- are 2, 8, and 2, 8, 8 respectively.
(a) Write the electronic arrangement of the elements X and Y. (2 mks)
(b) Write the formula of the compound that would be formed between X and
Y.
When bromine gas reacts with aqueous sodium hydroxide, the equilibrium represented by the equation: Br2 (aq) +2OH-(aq) Br-(aq) + OBR- (aq) + H2O is established.
What observations would be made if a few drops of sulphuric acid were added to the equilibrium mixture? Explain.
3 Calculate the amount of calcium carbonate that would remain if 15.0g of calcium carbonate were reacted with 0.2 moles of hydrochloric acid.
The equation for the reaction is CaCO3 (g) + 2HCl CaCl2 (aq) + CO2 (g) + H2O (g) (C = 12.0 = 1.60, Ca = 40.0)