Calculate the molarity of each of t...
Question
Calculate the molarity of each of the following solutions:(a) 30 g of Co(NO3)2⋅6H2O in 4.3L of solution (b) 30mL of 0.5MH2SO4 diluted to 500mL
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Calculate the molarity of each of the following solutions:(a) 30 g of (mathrm{Co}left(mathrm{NO}_{3}right)_{2} cdot 6 mathrm{H}_{2} mathrm{O} ) in ( 4.3 mathrm{L} ) of solution (b) ( 30 mathrm{mL} ) of ( 0.5 mathrm{M} mathrm{H}_{2} mathrm{SO}_{4} ) diluted to ( 500 mathrm{mL} )

JEE/Engineering Exams
Chemistry
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Calculate the molarity of each of the following solutions:(a) 30 g of Co(NO3)2⋅6H2O in 4.3L of solution (b) 30mL of 0.5MH2SO4 diluted to 500mL
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Molar mass ef ( C_{0}left(N O_{3}right)_{2} cdot G H_{2} O=7424 )
[
text { Molarity }=frac{30}{7424} times frac{1}{4.3}=9.4 times 10^{-4}
]
(b) molarmass of ( mathrm{H}_{2} mathrm{SO}_{4}=98 )
NLOw, ( 30 mathrm{ml} ) ef ( 0.5 mathrm{MH}_{2} mathrm{SO}_{4} )
( =3 phi times frac{0.5}{1000} )
mole
[
=1.5 times 10^{-2} text {mole }
]
Then, mularity ( =frac{1 cdot 5 times 10^{-2} times 10^{3}}{550} times 10^{3} )
[
begin{array}{l}
=frac{15}{500}=frac{3}{100}=frac{0.03 pi}{108}=
+108
end{array}
]

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