Question

4 g carbon were heated with 8 g of sulphur. How much carbon disulphide (CS2) will be formed when the reaction is completed? What will be its percentage purity?  

Solution

Correct option is

79.2%

 

C      +     2 S    →     CS2

12g          2 × 32         12 + 2 ×3 2

               = 64 g        = 76 g

Obviously, sulphur will be the limiting reactant.

8 g sulphur will produce 

Carbon reacted 

Total mass of products   

SIMILAR QUESTIONS

Q1

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Q2

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Q3

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Q4

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Q5

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Q6

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Q7

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Q8

How many years would it take to spend Avogadro’s number of rupees at the rate of 10 lakh rupees per second?

Q9

Gastric juice contains about 3.0 g of HCl per litre. If a person produces about 2.5litre of gastric juice per day, how many antacid tablets each  containing 400 mg of Al(OH)­3 are needed to neutralize all the HCl produced in one day. 

Q10

What volume at N.T.P of ammonia gas will be required to be passed into 30mL of N H2SO4 solution to bring down the acid normality to 0.2 N?