Most Important Selected Qs for JEE AdvancedChemistrySolutions
Paragraph: Concentration of a solution can be represented in many ways. Some of the important concentration terms are as follows : Molarity of solution = number of moles volume of solution in litre Let a solution is prepared by dissolving w gm of solute of mol . wt . M in V ml water. aligned & Number of moles of solute dissolved = w M & molality = number of moles of solute mass of solvent in gram 1000 & % w / v = mas
Options
- A50.92
- B75.27
- C15.75
- D42.85
Correct answer
D. 42.85
Step-by-step solution
2 NaOH + H ₂ SO ₄ Na ₂ SO ₄+2 H ₂ O array lc 1 M & 1 M 100 ml & x ml 100-2 x & 0 array 100-2 x 100+x =0.1 x= 90 2.1 =42.85 ml