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Grade 12Physical Chemistry

the work done when 6.5 g of zinc reacts with dil Hcl iss an open container at 298 K

Profile image of madhumitha
9 Years agoGrade 12
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2 Answers

Profile image of Vikas TU
9 Years ago
Dear Madhumitha,
I have already answered this eqn. plz check,
moles of zinc = 6.5/65 = 0.1mol
Wext. = – P*V = -1*V = -V => -nRT/P
=> -0.1*0.0821*298/1
=> -2.44658 Joules
Profile image of Priyanshi jain
8 Years ago
No. Of moles= 6.5/65= 0.1mol. We know that Work in a chemical reaction can be calculated by this formula , W = -ngRT. W= -0.1mol*2Cal/K/Mol*298K =59.6 Calorie.