Chemistry: Solutions

Question 1

brass ,bronze, german silver

Accepted Answer

copper and zinc , copper and tin , copper zinc and nickel

Question 2

mass percentage of compound

Accepted Answer

(mass of compound/total mass of solution)*100%

Question 3

mole fraction

Accepted Answer

Xa =na/(na+nb)

Question 4

parts per million

Accepted Answer

(mass of solute/mass of solution)*10^6

Question 5

molarity and molarity of mixing non reacting solutions

Accepted Answer

no of moles /volume of solution in litre,M1V1+M2V2=M(V1+V2)

Question 6

M*MB=?

Accepted Answer

M*MB =10*density*mass percentage=10*%mass by volume

Question 7

XB with density ,M with density

Accepted Answer

XB=MMA/M(MA-MB)+d M=dXB/XAMA+XBMB

Question 8

molality , molality with XB, molality and molarity

Accepted Answer

no of moles of solute/mass of solvent in kg, m=1000XB/XAMA ,m=(M/1000d-MMB)*1000(in kg/l and kg/mol) m=M/d-MMB (in g/ml and g/mol)

Question 9

normality, dilution formula,normality of miture of non reacting, normality of mixture of reacting , normality*EB =?

Accepted Answer

N=wB/EB*V(L) ,N1V1=N2V2,N1V1+N2V2=N(V1+V2),N1V1-N2V2=N(V1+V2),N*EB=10*density*mass percentage,N*EB=10*%mass by volume, N=M*n

Question 10

Henry law for dilute solution,for aqueous solution

Accepted Answer

P=KHXB, P=KH*nB/nA ,P=KH*nB/55.55 (where 55.55=1000/18)

Question 11

raoults law and dalton law of total pressure

Accepted Answer

PA=P°AXA, PTotal=PA+PB

Question 12

∆Tb=? kb for water kf for w

Accepted Answer

∆Tb=Kb*m (kb for water =

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