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CBSE Class 12-science Answered

Calculate the molarity of NH3 if is in a solution of 30.6g NH3 in 81.3g of H2O the density of the solution is 0.982g/ml and the density of H2O is 1g/ml  
Asked by balamuralitharan12 | 24 Mar, 2019, 09:10: PM
answered-by-expert Expert Answer
M o l a l i t y space left parenthesis m right parenthesis space equals space eta subscript S o l u t e end subscript over W subscript S o l v e n t space end subscript space equals space fraction numerator 30.6 over denominator 17 space cross times 0.0813 end fraction space equals space 22.14 m space space space left curly bracket W subscript S o l v e n t space end subscript i n space K g right parenthesis R e l a t i o n space b e t w e e n space m o l a l i t y space a n d space m o l a r i t y space i s space g i v e n space b y space minus space 1 over m equals fraction numerator d subscript S o l u t i o n end subscript over denominator M o l a r i t y space end fraction space minus space M subscript S o l u t e end subscript over 1000 space p u t t i n g space t h e space v a l u e space a s space m e n t i o n e d space i n space t h e space q u e s t i o n space f i n a l l y space w e space g e t space M o l a r i t y left parenthesis M right parenthesis space equals 15.76 M space left parenthesis a p p r o x. right parenthesis
Answered by Sumit Chakrapani | 26 Mar, 2019, 02:52: AM

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