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Semoga terus cemerlang dunia dan akhirat daripada cgu Shima

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How to calculate heat of reaction

-all SPA dissolve in water (endothermic)
-Nitrate and carbonate salt (endothermic when heating)
-neutralisation
-combustion are exothermic reaction

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Q = mcθ [Heat energy needed]
ΔH = [Heat released] (-)EXO (+)ENDO
-Kalau macam dia ada percampuran dua solution, m(mass)/volume kena tambah (sebab solution level akan increase)
-exo release heat, endo absord heat
-exo temp increase, endo temp decrease [temp of surrounding] [yang absorb or release tu reactant]
-ENDO (ingat endo sebab dia sikit je)(selain ni semua exo)
🟡 sodium/potassium hydrogen carbonate +H2O/acid
🟡 SPA dissolve in water
🟡 photosynthesis
🟡 carbonate/nitrate salt
-energy of product dengan reactant, bole tengok energy level diagram. ΔH = product - reactant
🟣 EXO = energy reactant > energy product
🟣 ENDO = energy product > energy reactant
-kalau ada dua mol, cari dua dua lepastu compare kan (jangan ambik yang excess nanti lagi satu tu ta cukup) (*ambik paling kecik)
-chemical bond (EXO - form) (ENDO-break)

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calculation heat of reaction in experiment

-cari dulu mol bagi dua solution
-compare kan nanti dapat tahu mana satu yang excess
-pakai formula heat kat atas ni
-per kan dengan 1000 (kat soalan tu dia kJ)

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Thermochemistry
-type of thermochemistry
-example of thermochemistry
-calculation
-energy level diagram
-energy profil diagram

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SPA salt in water = endothermic
Nitrate and carbonate salt = endothermic when heating

How to calculate heat of reaction

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- the more negative the Enode value, the stronger the reducing agents
- NaHCO₃ (endo reaction only)

- calculation steps (Q=mcteta)
- energy level diagram
- profile diagram

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Endo/exothermic reaction
Calculation of heat of combustion

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- all SPA dissolve in water
- sodium hydrogen carbonate + water / acid
- photosynthesis
- heating of carbonate / nitrate salt

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Types of endothermic reactions

Neutralisation & combustion is exothermic ONLY
Steps calculation heat of reaction

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kalau tak login jgn lupa tulis nama tauu
-tekan je simbol plus tu
-and bole type je pape
-bole attach gamba
tau syasmeen
😆😆

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thermochemistry

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Thermochemistry
- endothermic (absorbs heat), exothermic (releases heat)
- heat of change negative = exothermic, heat of change positive = endothermic (based on graph/product-reactant)
- endothermic reaction includes;
1. SPA salt in H20
2. Sodium hydrogen carbonate + H20
3. Heatingof carbonate in nitrate salt
4. Photosynthesis
- yang lain semua exothermic reactions
- The total energy content in the products is higher than the total energy content in the reactants(endothermic)
-The total energy content in the products is lower than the total energy content in the reactants (exothermic)

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Calculation heat of reaction
Neutralisation and combustion are exothermic reaction