If `(I) C+O_(2)toCO_(2)`, `Q_(1)` `(II) C+(1)/(2)O_(2)toCO`, `Q_(2)` `(III) CO+(1)/(2)O_(2)toCO_(2)`, `Q_(3)` The heats of reaction `Q_(1)` and `Q_(2)

Question

If `(I) C+O_(2)toCO_(2)`, `Q_(1)` `(II) C+(1)/(2)O_(2)toCO`, `Q_(2)` `(III) CO+(1)/(2)O_(2)toCO_(2)`, `Q_(3)` The heats of reaction `Q_(1)` and `Q_(2)

If `(I) C+O_(2)toCO_(2)`, `Q_(1)`
`(II) C+(1)/(2)O_(2)toCO`, `Q_(2)`
`(III) CO+(1)/(2)O_(2)toCO_(2)`, `Q_(3)`
The heats of reaction `Q_(1)` and `Q_(2)` are `-12`, `-10` respectively. Then `Q_(3)=`
A. `-2`
B. `2`
C. `-22`
D. `-16`

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - A
`(i) C+O_(2)toCO_(2)`, `Q_(1)=-12`
`(ii) C+(1)/(2)O_(2)toCO`, `Q_(2)=-10`
`(iii) CO+(1)/(2)O_(2)toCO_(2)`, `Q_(3)=?`
To get `Q_(3)`, solve eqn. no. `(i)`-eqn. no. `(ii)`
`:. Q_(3)=-12-(-10)=-12+10=-2`

5 views Answered 2023-02-05 15:29