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The term mole first used by Ostwald in 1...

The term mole first used by Ostwald in `1896` refers for the ratio of mass of a substance in `g` and its molecular weight. `1 "mole"` of a gaseous compound occupies `22.4 "litre"` at `NTP` and contains `6.023xx10^(23)` molecules of gas.
The volume of air needed to burning `12 g` carbon completely at `STP` is:

A

`22.4 "litre"`

B

`112 "litre"`

C

`44.8 "litre"`

D

`50 "litre"`

Text Solution

Verified by Experts

The correct Answer is:
B
`C+O_(2)rarrCO_(2)`
`12 g` carbon needs `22.4 "litre air" 22.4 "litre" O_(2)`
or
`(22.4xx100)/(20)"litre air"=112 "litre air"`
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P BAHADUR-MOLE AND EQUIVALENT CONCEPT-Exercise 7 Comprehension based objective problems
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  10. What weight of AgCl will be precipitated when a solution containing 4....

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  11. Find out the equivalent weight of H(3) PO(4)in the reaction: Ca(OH)(...

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  12. 20 mL of 0.2 M Al(2) (SO(4))(3) is mixed with 20 mL of 0.6 M BaCl(2). ...

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  13. A 6.90 M solution of KOH contains 30% by weight of KOH. Calculate the ...

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  14. Find the weight of H(2) SO(4) in 1200 mL of a solution of 0.2 N streng...

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  15. The concentration of solutions can be expressed in number of ways such...

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  17. How much BaCl(2) would be needed to make 250 mL of a solution having s...

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