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What happens when citric acid is heated at 150 c ?

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تم إضافة السؤال من قبل احمد محمود ابو اليزيد العمروسي , كميائي , معهد بحوث البترول
تاريخ النشر: 2016/12/23
Mohammad Alhassan
من قبل Mohammad Alhassan , Group Leader & HSE In charge , BCMI

Start Melting beacause the melting point is 153 c 

At 175 c  start decompese 

Munazza Shakoor
من قبل Munazza Shakoor

Citric acid starts decomposing with the lose of carbondioxide which causes effervences. Water molecule is also lost during the process.

MIHAI-DANIEL MIRON
من قبل MIHAI-DANIEL MIRON , Supervisor lead engineer maintenance preventive, corrective/predictive, NPP Cernavoda. , SC ELCOMEX IEA

Decomposes by loss of CO2 and H2O.

WAJID JAFRI
من قبل WAJID JAFRI , Head R &D , Parmax Pharma Ltd

It will from the anhydride of the acid loosing a molecule of water

Doaa Mohamed Elnabawi ABDELRAZIK
من قبل Doaa Mohamed Elnabawi ABDELRAZIK , Teacher , Al-Wady language school

It start to melt as its melting point is 156°C .and by continuing heating till 175 it starts to dehydrate

Lubna Amer
من قبل Lubna Amer , محلل كيميائي , شركة الراية الطبية

Citric acid

Melting point 156 °C (313 °F; 429 K) Boiling point 310 °C (590 °F; 583 K) decomposes from 175 °C[1]

Nesma saber
من قبل Nesma saber , science teacher , Pionners international school

Since the melting point of citric acid is C so by heating it atO C, it starts to melt. But by heating the Citric acid above C it decomposes producing carbon dioxide and water and a white ppt. 

مستخدم محذوف‎
من قبل مستخدم محذوف‎

 

It melts and dehydrates to give aconitic acid on heating at 175ºC. Further heating results in the formation of citraconic anhydride.

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