Tentukan Kadar Urea Dalam Larutan Urea 1 Molal

Daftar Isi

Tentukan kadar urea dlm larutan urea 1 molal

1 molal = [g/Mr] x [1000/p], jangan lupa Mr urea = 60

1 = [g/60] x [1000/p]

g = 0,06p

Kadar urea = g / [g + p] x 100%

= 0,06p / [0,06p + p] x 100%

= (0,06/1,06) x 100%

= 5,66%

___selesai___

Molalitas = [massa urea/Mr] x [1000/massa pelarut air]

Mr urea = 60 & Mr air = 18

1 = [g/60] x [1000/p]

g = 0,06p

Kadar urea = [massa urea] / [massa urea + massa air] x 100%

kadar urea = g / [g + p] x 100%

kadar urea = 0,06p / [0,06p + p] x 100%

kadar urea = [0,06/1,06] x 100%

menjadi, = [⁶/₁₀₆] x 100%

∴ kadar urea = 5,66%

60………………..

urea 1 molal = 1 mol urea dlm 1000 gr air

>> urea = 1 mol

mol=gr/ mr jadi gr urea= mol x mr
=1 x 60
=60

>> air = 1000 gr

kadar urea = masaa urea/ masaa larutan x 100 %

= massa urea / masaa urea +massa air x 100 %
=60/ 60 +1000 x100 %
=60/1060 %
=5,66 %

Molalitas = [massa urea/Mr] x [1000/massa pelarut air]

Mr urea = 60 & Mr air = 18

1 = [g/60] x [1000/p]

g = 0,06p

Kadar urea = [massa urea] / [massa urea + massa air] x 100%

kadar urea = g / [g + p] x 100%

kadar urea = 0,06p / [0,06p + p] x 100%

kadar urea = [0,06/1,06] x 100%

kadar urea = 600/106 %

∴ kadar urea = 5,66%

___selesai___

Semoga menolong, bila berkenan mohon ditandai sebagai balasan terbaik untuk penambah semangat