1. This question is about copper(ll) sulfate solution, which contains Cu2+(aq) and SO, 2-(aq) ions. a) The presence of the sulfate ions can be shown by adding dilute hydrochloric acid and barium chloride solution to produce a white precipitate.

(i) Name the white precipitate.
(ii) Write the ionic equation for its formation.

a basic solution is an aqueous solution containing more oh-ions than h+ions. in other words, it is an aqueous solution with a ph greater than 7. basic solutions contain ions, conduct electricity, turn red litmus paper blue, and feel slippery to the touch.

explanation:

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6

може ли да зареждате повече информация, моля

yes the answer is total mass in unchanged   : )