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Author Question: Silica (SiO2) can be prepared from silicon ethoxide by the sol-gel process. Write a balanced ... (Read 62 times)

jlmhmf

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on: Feb 15, 2020

Question 1

What is not part of the sol-gel process for the production of titania?
◦ (HO)3-Ti-OH + HO-Ti-(OH)3 → (HO)3-Ti-O-Ti(OH)3 + H2O
◦ TiCl4 + 4 HOCH2CH3 + 4 NH3 → Ti(OCH2CH3)4 + 4 NH4Cl (in benzene)
◦ Ti(OCH2CH3)4 + 4 H2O → Ti(OH)4 + 4 HOCH2CH3
◦ 4 Ti(OH)4 + heat → 2 Ti2O3 + 8 H2O + O2

Question 2

Silica (SiO2) can be prepared from silicon ethoxide by the sol-gel process. Write a balanced equation for the hydrolysis of silicon ethoxide.
◦ Si(OCH2CH3)4 + 4 H2O → Si(OH)4 + 4 HOCH2CH3
◦ SiCl4 + 4 HOCH2CH3 + 4 NH3 → Si(OCH2CH3)4 + 4 NH4Cl (in benzene)
◦ Si(OCH2CH3)4 + 4 HOCH3 → Si(OCH3)4 + 4 HOCH2CH3
◦ Si(OCH3)4 + 4 H2O → Si(OH)4 + 4 HOCH3
Chemistry ¦ McMurry, Fay, Robinson ¦ 7th Edition
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Marked as best answer by jlmhmf on Feb 15, 2020

lindahyatt42

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Reply #1 on: Feb 15, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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jlmhmf

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Reply 2 on: Feb 15, 2020
YES! Correct, THANKS for helping me on my review

Joy Chen

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Reply 3 on: Yesterday
:D TYSM

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