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CBSE Class 11-science Answered

how many grams of 83.4% pure sodium sulphate can be produced from 250gm of 95% pure sodium chloride on reaction with conc. sulphuric acid  
Asked by tps.mjmdr | 21 Jun, 2018, 10:28: PM
answered-by-expert Expert Answer
2 NaCl space space plus space straight H subscript 2 SO subscript 4 space rightwards arrow space 2 HCl space space plus space Na subscript 2 SO subscript 4 117 space straight g space space space space space space space space space 98 space straight g space space space space space space space space space space space 36.5 space straight g space space space space space space 142 space straight g space Given space weight space of space NaCl equals space 250 space straight g Actual space weight space equals space 95 percent sign space 250 space straight g space NaCl space equals 250 cross times space 95 over 100 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 237.5 space straight g 117 space straight g space of space NaCl space gives space 142 space straight g space of space sodium space sulphate therefore space space 237.5 space straight g space of space NaCl space will space give space space fraction numerator 237.5 cross times 142 over denominator 117 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 equals space 288.24 space straight g space of space sodium space sulphate The space sodium space sulphate space is space 83.4 percent sign comma therefore space 288.24 space fraction numerator 83.4 over denominator 100 end fraction equals space 240.4 space straight g space of space sodium space sulphate
Answered by Varsha | 22 Jun, 2018, 06:27: PM

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CBSE 11-science - Chemistry
In this, if the options weren't there, couldn't it have been YX 2  (2 in subscript)
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Asked by drhimasingh | 22 May, 2020, 11:39: AM
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CBSE 11-science - Chemistry
2g Feso4 is completely oxidised by 0.05M kmno4.what volume of kmno4 is required？
Asked by nareshrajpurohit43109 | 22 May, 2020, 11:18: AM
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CBSE 11-science - Chemistry
Please solve the qustion in the attachment
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Asked by d6knx7qmw1 | 15 May, 2020, 10:37: PM
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CBSE 11-science - Chemistry
Sir Q.no 3
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Asked by sahadipa1975 | 02 May, 2020, 08:53: AM
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CBSE 11-science - Chemistry
what is the mole fraction of alcohol in 10% of alcohol w/w in water ?
Asked by abhishek19362771 | 08 Apr, 2020, 03:48: PM
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CBSE 11-science - Chemistry
ans with solutions
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Asked by anilsolanki2060 | 22 Feb, 2020, 10:12: AM
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CBSE 11-science - Chemistry
Q.no 3 =the relative abundance of various isotopes of silicon is as Si-28=92.23%, Si-29=4.67% & Si-30=3.10%. what is the average atomic mass of silicon.
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Asked by pujakurmi22 | 11 Nov, 2019, 10:59: PM
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CBSE 11-science - Chemistry
Vitamins C is essential fot prevention of scurvy combustion of 0.9g of vitamins C givez 0.2998g of Co2and 0.819g of H2OWhat is empirical formula of Vitamin C
Asked by jkatwara | 14 Oct, 2019, 12:21: PM
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CBSE 11-science - Chemistry
 A compound of lead has the following percentage composition: Pb = 90.66%, O = 9.34%. Calculate the empirical formula of the compound.(Pb =207,O=16 )
Asked by vikas.kochhar6 | 30 Aug, 2019, 03:58: PM
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CBSE 11-science - Chemistry
2 L of NH3 at 273K and 1 ATM pressure neutralised 134ml of a solution of H2SO4.What is the normality of the acid?
Asked by pb_ckt | 19 May, 2019, 11:56: PM
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