Question

copper sulphate react with Sodium Hydroxide to form blue precipitate of copper hydroxide and sodium sulphate in an experiment 15.95 gram of copper sulphate react with 8.0 gram of sodium hydroxide to form 99.7 5 gram of copper hydroxide and 14.2 gram of sodium sulphate which law of chemical combination is interested in this data give reason for your choice ​

Answer 1

Answer:

According to question-

CuSO4   +   NaOH   →   Cu(OH)2   +   NaSO4

(15.95 g)    (8 g)          (9.75 g)        (14.2 g)

Clearly, in this case

Total mass of reactants = (15.95 g + 8 g) = 23.95 g

Total mass of products = (9.75 g + 14.2 g) = 23.95 g

Hence, Law of conservation of mass is valid here.