When of is heated, volume reduces to half and of evaporates. Molarity of remaining solution is . ()

Question

When  of   is heated, volume reduces to half and  of  evaporates. Molarity of remaining solution is  . ()

Canvas Classes · Accepted Answer

Strategy:
 Molarity changes both due to volume reduction and loss of solute. Subtract the moles of evaporated acid from the initial total, then divide by the final volume.

Step 1: Initial state
Initial moles .

Step 2: Loss from evaporation
Moles evaporated .
Remaining moles .

Step 3: Calculate final Molarity
Final volume .

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