Answer :
The molar mass of h2x is 222.22 g/mol
H2X + 2NaOH → Na2X + 2H2O
Mole NaOH = concentration × volume
= 0.450 × 44.2 × [tex]10^{-3}[/tex]
= 0.01989mol
Mole H2X = 0.01989 / 2 = 0.0099mol
H2X and NaOH has 1 : 2 molar ratio
Molar mass = mass / mole =2.20/0.0099 = 222.22 g/mol
A chemical compound's molar mass is calculated by dividing its mass by the number of moles measured in moles that make up the sample of that compound. In contrast to molecular properties, a substance's molar mass is a bulk property. The comp0und is present in many different forms, each with a different mass as a result of the isotopes. The mlar mass represents the average of these masses. The molar mass is most frequently calculated from the standard atomic weights and is a function of the relative abundance of the constituent atoms' isotopes on Earth. It is thus a terrestrial average. The conversion betwen a substance's mass and amount can be done using the molar mass.
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