Grade 11Physical Chemistry
Molality of sulphuric acid solution is 0.2mol/kg find total weight of solution?(in gm)
3 Answers
Vikas TU
0.2 molality means
0.2 moles of solute are present in 1 kg of solvent.
mass of solution would be=> mass of solute + mass of solvent.
mass of solute = molar mass * moles of solute = > 98 * 0.2 = 19.6 gm
Therfore,
mass of soltuion is = 1000+ 19.6 = 1019.6 gm.
Aditya kulkarni
Molality= moles of solute ÷ mass of solventHence moles of solute= 0.2 Mass of solvent =1000gHence, moles of solute *Molecular mass= given massMolar mass for sulphuric acid = 98Hence, 98*0.2= 19.6g (given mass)We know Mass of solution =mass of solute + mass of solvent = 19.6+1000=1019.6g
Aditya Singh chauhan
If the weight of solvent that is 1kg or 1000 g is given in question so we have to calculate total weight of solution.
.2 molal of sulphuric acid
Molecular weight of h2so4 is 98g
Hence weight of solute is 98g×.2=19.6g
So total weight of solution will be 1000g + 19.6g=1019.6g.ans(cheers)
Other Related Questions on physical chemistry
Which of the following aqueous solutions remains neutral after
electrolysis
Which of the following aqueous solutions remains neutral after
electrolysis
electrolysis
physical chemistry
Last Activity: 3 Years ago
In the reaction A + 2B ⇌ 2C, if 2 moles of A, 3 moles of B and 2 moles of C are placed in a 2 L flask and
the equilibrium concentration of C is 0.5 mol/L. The equilibrium constant (KC) for the reaction is.....and please tell how you know that the reaction is going forward .. imean how to calculate the reaction quotient ???
In the reaction A + 2B ⇌ 2C, if 2 moles of A, 3 moles of B and 2 moles of C are placed in a 2 L flask and
the equilibrium concentration of C is 0.5 mol/L. The equilibrium constant (KC) for the reaction is.....and please tell how you know that the reaction is going forward .. imean how to calculate the reaction quotient ???
the equilibrium concentration of C is 0.5 mol/L. The equilibrium constant (KC) for the reaction is.....and please tell how you know that the reaction is going forward .. imean how to calculate the reaction quotient ???
physical chemistry
Last Activity: 3 Years ago
True or false when an electron in ground state of hydrogen atom is excited with an energy that is greayer than e2-e1 but less than e3-e1 the electron will get excited n=2
True or false when an electron in ground state of hydrogen atom is excited with an energy that is greayer than e2-e1 but less than e3-e1 the electron will get excited n=2
physical chemistry
Last Activity: 3 Years ago
18 19 gram mixture of na2co3 and nahco3 on heating gives 2.2 gram CO2 gas find the percent nahco3 (by mass) in mixture
18 19 gram mixture of na2co3 and nahco3 on heating gives 2.2 gram CO2 gas find the percent nahco3 (by mass) in mixture
physical chemistry
Last Activity: 4 Years ago