Copper refining traditionally involves "roasting" insoluble sulfide ores (CuS)(CuS) with oxygen. Unfortunately, the process produces large quantities of SO2(g)SO2(g), which is a major contributor to pollution and acid rain. An alternative process involves treating the sulfide ore with HNO3(aq)HNO3(aq), which dissolves the CuSCuS without generating any SO2SO2. The unbalanced chemical equation for the reaction is given below. CuS(s) + NO3_(aq)> Cu2+(aq) + NO(g) + HSO4_(aq) (not balanced) What volume of concentrated nitric acid solution is required per kilogram of CuS? Assume that the concentrated nitric acid solution is 70% HNO3 by mass and has a density of 1.40g/ml.

answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.

the answer is option a.

answer: option (a) is the correct answer.

explanation:

the measurement of hydrogen ions in a solution is known as ph.

if ph of a solution is less than 7 then the solution is acidic. if ph of a solution is greater than 7 then the solution is basic.

when the ph of a solution equals 7, then the solution is considered as neutral.

the ph of pure water is 7, therefore, it means that concentration of hydronium ions equals that of hydroxide ions.