Molarity Quiz 1

Question 1

Find the molarity of the solution when $$40 g$$ of sodium hydroxide is added to $$100 ml$$ of the water?

Accepted Answer

10 M

Answer

20 M

Answer

25 M

Answer

18 M

Question 2

The molarity of a solution is $$2 M$$ and the molecular weight of the solute which is present in the solution is 100. Determine the volume of the solution? $$	ext{(Weight of the solute is 2 g)}$$

Accepted Answer

10 ml

Answer

15 ml

Answer

30 ml

Answer

90 ml

Question 3

$$5 g$$ of a chemical is added to $$250 ml$$ of water to prepare a $$2 M$$ solution. Find the molecular weight of the chemical?

Accepted Answer

10

Answer

28

Answer

25

Answer

98

Question 4

The solution in the round bottom flask contains 20 g of calcium carbonate in 100 ml. Calculate the molarity of the solution? $$ \ $$ <img  src="https://cmds-vedantu.s3.ap-southeast-1.amazonaws.com/prod/question-sets/ad8b4d10-7e93-4ea9-978c-4ecaf9c28b612950680013463794911.png"/>

Accepted Answer

2 M

Answer

5 M

Answer

20 M

Answer

None of the above

Question 5

The molarity of a sugar solution is $$2.18 M$$. Find the mass of the sugar which is present in $$250 ml$$ of the water?  $$	ext{(Molecular weight of the sugar is 342 amu.)}$$

Accepted Answer

186.55 g

Answer

195.38 g

Answer

205.00 g

Answer

258.00 g