130 g of Zn is dissolved in dilute sulphuric acid in an open beaker . Find the work done in the process assuming isothermal operation.

Question

130 g of Zn is dissolved in dilute sulphuric acid in an open beaker . Find the work done in the process assuming isothermal operation.

130 g of Zn is dissolved in dilute sulphuric acid in an open beaker . Find the work done in the process assuming isothermal operation.
A. `-1200` cal
B. `-1800` cal
C. `+1800` cal
D. `+1200 ` cal

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
Beaker is open and in open beaker external pressure remains constant.
`Zn+ H_(2)SO_(4) rarr ZnSO_(4)+ H_(2)(g)`
`(130)/(65)=2 "mole"`
PV =nRT
`PDeltaV=n_(g)RT`
`W=-n_(g)RT =2xx2xx300=-1200 "cal"`.

5 views Answered 2023-02-05 15:29