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notsponge [240]
3 years ago
12

Suppose two chemical reactions are linked together in a way that the O2 produced in the first reaction goes on to react complete

ly with Mg to form MgO in the second reaction. Reaction one: 2 KClO3 → 3 O2 + 2 KCl Reaction two: 2 Mg + O2 → 2 MgO If you start with 4 moles of KClO3, how many moles of MgO could eventually form
Chemistry
1 answer:
torisob [31]3 years ago
3 0

Answer:

Numbe of mole of MgO form=12

Explanation:

First calculate the number of mole of O_2 produced from 4 mole of  KCLO_3

Balance the first reaction:

2KClO_3 \rightarrow  3 O_2 + 2 KCl

from the above balanced reaction it is clearly that,

by unitry method,

2 mole of KCLO_3 produced 3 mole of O_2

1 mole of KCLO_3 produced 1.5 mole of O_2

from 4 mole of KCLO_3  4\times 1.5 mole of O_2 produced

hence we have 6 mole of O_2 and this total oxygen will react with Mg

Balance the second reaction:

2Mg + O_2 \rightarrow 2 MgO

since produced oxygen in first reaction is reacted completely with Mg means Mg is given in excess quantity,

From the second balanced reacion it is clearly that,

1 mole of O_2 produced 2 Mole of MgO

hence 6 mole of O_2 will produce 12 mole of MgO

Numbe of mole of MgO form=12

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