GATE GG-1 · 2017 · GG-1
Question 39: Geochemistry
Give it a try, then reveal the answer to check your work.
Question 39
GG-1NAT2 marksNeeds review
The standard thermodynamic data for enstatite (Mg₂Si₂O₆), quartz (SiO₂) and forsterite (Mg₂SiO₄) is given in the table below. The Gibb’s free energy of the reaction Mg₂SiO₄ + SiO₂ = Mg₂Si₂O₆ at 600 K and 1 bar is __________ J.
(Assume Cₚ = 0 for all minerals in the reaction)
Mineral | ΔH°f, 298 (kJ) | S° (J K⁻¹) |
|---|---|---|
Enstatite | -3090.47 | 132.5 |
Quartz | -910.83 | 41.5 |
Forsterite | -2172.2 | 95.1 |
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerEXPLORE & PRACTISE
Paper and topic context
See where this question comes from and choose what to practise next.
2017GG-1
GATE GG-1 2017 · Paper 1
Geology and Geophysics · Original paper archive
- Section
- Geology and Geophysics
- Question type
- Numerical answer (NAT)
- Marks
- 2 marks
Practise related topics
Explore more previous year questions using this question’s imported topic tags.
geology
GATE GG-1 previous year questions
earth science
GATE GG-1 previous year questions
geoscience
GATE GG-1 previous year questions
geochemistry
GATE GG-1 previous year questions
Comments
Ask a question, share your approach, or help someone understand.
Log in to view the discussion
You’re not logged in. Log in or create an account to see discussions and add comments.