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CBSE Class 8 Answered

96 grams of sulphur was heated. After a while , the fire was put out. it was found 35 grams of sulphur was left unreacted. 1) Find the mass of the sulphur reacted. 2) Find the mass of the sulphur dioxide produced
Asked by nathsantanukumar | 30 Oct, 2018, 08:52: AM
answered-by-expert Expert Answer
Given:
 
Weight of sulphur = 96 g
 
Weight of unreacted sulphur = 35 g
 
 
The chemical equation is 
 
space space space straight S subscript open parentheses straight s close parentheses end subscript space space space plus space space straight O subscript 2 subscript open parentheses straight g close parentheses end subscript end subscript space space rightwards arrow space SO subscript 2 subscript open parentheses straight g close parentheses end subscript space space open parentheses 32 close parentheses space space space space space space space space space space space space space space space space space space space space space space space open parentheses 64 close parentheses As space 35 space straight g space of space sulphur space remains space unreacted comma weight space of space sulphur space reacted space equals space 96 space minus space 35 space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals space 61 space straight g As comma space 32 space straight g space of space sulphur space on space heating space gives space 64 space straight g space of space space SO subscript 2 61 space straight g space of space sulphur space on space heating space will space produce space fraction numerator 61 cross times 64 over denominator 32 end fraction space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals space 122 space straight g space of space SO subscript 2
The mass of sulphur reacted is 61 g
 
The mass of the sulphur dioxide produced is 122 g.
Answered by Varsha | 30 Oct, 2018, 01:30: PM
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