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A 400 ml sample of 1M NaOH is left in a hot plate ovemight, the following morning solution is 1.6M. Then volume of water evaporated is:A. 150mlB. 250mlC. 200mlD. 100ml |
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Answer» `M_(1)V_(1)=M_(2)V_(2)` `1Mxx400=1.6xxV_(2)` `v_(2)=(400)/(1.6)=250mL` `DeltaV=400-250=150ml` |
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