Question

A solution is made by dissolving 49 gram of H2 S o4 in 250 ml of water the molarity of the solution prepared is

Answer 1

molarity = mole ×1000/ volume in ml
mole = wt/ molecular weight
mole = 49/98
mole= 0.5
molarity = 0.5×1000/250
molarity= 2

Answer 2

Answer:

no.of moles=mass of element given /atomic mass

so

no.of.moles=49/98=0.5mol

molarity =no.of.mole of solute /volume of solution(in litre)

so

M=0.5mol×1000÷250. [ 1L=1000ml]

M=`2mol per litre