Chemistry, asked by abhishek0786, 1 year ago

if the mass ratio of NaOH and H2O in an aqueous solution is 4:25 then the molality of NaOH in the solution is

Answers

Answered by Jhani
5
4g is weight given of NaOH and 25g is weight given of H2O so we have definition of molality

no. of moles of solute/amt of solvent (in gram)

so, 4/40=no. of moles

0.1×1000=100

100÷25= 4 molal

Jhani: pls mark it best if understood
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