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1 g sample of KClO(3) was heated under s...

1 g sample of `KClO_(3)` was heated under such conditions that a part of it decomposed according to the equation :
`2KClO_(3) rarr 2KCl + 3O_(2)` and the remaining underwent change according to the equation : `4KClO_(3)rarr 3KClO_(4)+KCl`
If the amount of `O_(2)` evolved was 146.8 ml at S.T.P., calculate the approximate % by weight of `KClO_(4)` in the reside.

A

50%

B

55%

C

45%

D

50%

Text Solution

Verified by Experts

The correct Answer is:
A
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1 g sample of KClO_(3) was heated under such conditions that a part of it decomposed according to the equation : 2KClO_(3) rarr 2KCl + 3O_(2) and the remaining underwent change according to the equation : 4KClO_(3)rarr 3KClO_(4)+KCl If the amount of O_(2) evolved was 146.8 ml at S.T.P., calculate the % by weight of KClO_(4) in the reside.

1.0g sample of KCl_3 was heated under such condition that a part of it decomposed according to the equation. 2KClO_3to2KCl+3O_2 and the remaining underwent change according to the equation. 4KClO_3to3KClO_4+KCl . If the amount of O_2 evolved was 145.8 mL at STP. Calculate the percentage by weight of KClO_4 in the residue.

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