Some Basic Concepts Of Chemistry Question 134
Question: The volume of concentrated sulphuric acid which is 98% by mass (density $ =1.84,g,c{m^{-3}} $ ) required to prepare $ 5,dm^{3} $ of $ 0.5mold{m^{-3}} $ solution of sulphuric acid is
Options:
A) 272 mL
B) 68 mL
C) 136 mL
D) 204 mL
Show Answer
Answer:
Correct Answer: C
Solution:
[c] Molarity of given sulphuric acid $ =\frac{98}{98}\times \frac{1.84}{100}\times 1000=18.4,mol,d{m^{-3}} $
$ M _1V _1=M _2V _2 $
$ V _1=\frac{0.5\times 5}{18.4}=0.136,dm^{3}=136,mL $
