Question

the teacher instructed 3 students a, b and c respectively to prepare a 50% solution

Answer 1

please complete the question

Answer 2

Answer:

Step-by-step explanation:

student A and B make solution about 150 ml so,

student c make desire solution bcoz he add water to make 100 ml solution.

and from calculation,

%w/v = 100 × weight of sub (solute)

                volume of solution

∴ %50 = 100 × weight of sub

                   100 ml

  weight of sub = 50 ×100 ml

                              100

∴  weight of sub = 50 g

here the 50g NaOH required for 50% w/v 100ml solution of NaOH