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If 30 ml of H2 and 20 ml of O2 react...

If 30 ml of `H_2` and 20 ml of `O_2` react to form water, what is left at the end of the reaction ?

A

If both (A) and (R ) are correct and (R ) is the correct explantion for (A)

B

If both (A) and (R ) are correct but (R ) is not the correct explantion for (A)

C

If (A) is correct but (R ) is incorrect.

D

If (A) and (R ) are incorrect.

Text Solution

Verified by Experts

The correct Answer is:
D
`(A)` is wrong, but `(R )` is correct.
`underset(30 mL)(H_(2)) + underset({:(15 mL),("reacted"):})((1)/(2) O_(2)) rarr H_(2) O`
volume of `O_(2)` left `= 20 - 15 = 5 mL`
`(R )` is correct, since `H_(2)` is completely consumed, and hence is the limiting reagent.
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