Some Basic Concepts of Chemistry
A 1.24 M aqueous solution of KI has density of $$1.15 g / cm^{3}$$ . What is the percentage composition of solute in the solution?
DoubtBuddy
Single Choice
Maximum percentage of chlorine is in :
AChloral
BPyrene
Correct Answer
CEthylidene chloride
DPVC
Solution
$$\text{Percentage of chlorine} = \dfrac{\text{Mass of chlorine in the compound}}{\text{Mass of compound}}\times 100$$
Chloral is $$Cl_3CCHO$$.
Percentage $$=\dfrac{106.5}{147.5}\times100=72.2$$
Pyrene is $$CCl_4$$.
Percentage $$=\dfrac{142}{154}\times 100=92.20$$
Ethylidene chloride is $$C_2H_2Cl_2$$.
Percentage $$=\dfrac{71}{97}\times100=73.19$$
PVC is $$[CH_2CHCl]_n$$.
Percentage $$=\dfrac{35.5}{62.5}\times100=56.8$$
Therefore, the maximum percentage of chlorine is present in pyrene.
SIMILAR QUESTIONS
Some Basic Concepts of Chemistry
The mole fraction of solute in aqueous urea solution is $$0.2$$. The mass percent of solute is:
Some Basic Concepts of Chemistry
Cortisone is a molecular substance containing $$21$$ atoms of carbon per molecule. The mass percentage of carbon in cortisone is $$69.98\%$$. It's molar mass is:
Some Basic Concepts of Chemistry
A regular co-polymer of ethylene and vinyl chloride contains alternative monomers of each type. The mass percent of ethylene in this co-polymer is (as the nearest integer) :
Some Basic Concepts of Chemistry
A mineral consists of an equimolar mixture of the carbonates of two bivalent metals. One metal is present to the extent of $$15.0\%$$ by weight. $$3.0$$ g of the mineral on heating lost $$1.10$$ g of $$CO_2$$. The percent by weight of other metal is :
Some Basic Concepts of Chemistry
Percentage of Se in peroxidase anhydrous enzyme is $$0.5$$% by weight (At. wt. = $$78.4$$) then, minimum molecular weight of peroxidase anhydrous enzymes is :
Some Basic Concepts of Chemistry
An organic compound contains $$C, H$$ and $$S$$. The minimum molecular weight of the compound containing $$8\%$$ sulphur is: [atomic weight of $$S= 32\ amu$$]
Some Basic Concepts of Chemistry
Calculate the mass percent of $$O$$ present in sodium sulphate $$\displaystyle \left( { Na }_{ 2 }{ SO }_{ 4 } \right)$$.
Some Basic Concepts of Chemistry
The density of a gas is $$1.78 \ g \ L^{-1}$$ at STP. The weight of one mole of gas is:
Some Basic Concepts of Chemistry
What will be the mass of 100 atoms of hydrogen?
Contact Details
- community@doubtbuddy.in
- M3M Cosmopolitian, Sector 66, Golf Course Extension Road, Gurgaon
- Policy Terms