A \( 1 \mathrm{~g} \) sample of \( \mathrm{KClO}_{3} \) was heated ...

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A \( 1 \mathrm{~g} \) sample of \( \mathrm{KClO}_{3} \) was heated under such conditions that a part of it decomposed according to the equation.
(i) \( 2 \mathrm{KClO}_{3} \longrightarrow 2 \mathrm{KCl}+3 \mathrm{O}_{2} \)
\( \mathrm{P} \) and the remaining underwent change according to the equation

W
(ii) \( 4 \mathrm{KClO}_{3} \longrightarrow 3 \mathrm{KClO}_{4}+\mathrm{KCl} \)
If the amount of \( \mathrm{O}_{2} \) evolved was \( 146.8 \mathrm{~mL} \) at NTP, calculate the percentage by weight of \( \mathrm{KClO}_{4} \) in the residue.
(1) \( 29.3 \% \).
(2) \( 49.8 \% \).
(3) \( 62.5 \% \)
(1) \( 87.1 \% \)
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