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Problem: The semiconductor gallium arsenide, GaAs, is used in highspeed integrated circuits, light-emitting diodes, and solar cells. Its density is 5.32 g/cm3. It can be made by reacting trimethylgallium, Ga(CH3)3, with arsine gas, AsH3. The other product of the reaction is methane, CH4.If you reacted 600 g of trimethylgallium with 400 g of arsine. How many moles of the Ga(CH3)3 would remain?

FREE Expert Solution

The balanced reaction is:

Ga(CH3)3 + AsH3 → GaAs + 3 CH4

From the reaction:

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Problem Details

The semiconductor gallium arsenide, GaAs, is used in highspeed integrated circuits, light-emitting diodes, and solar cells. Its density is 5.32 g/cm3. It can be made by reacting trimethylgallium, Ga(CH3)3, with arsine gas, AsH3. The other product of the reaction is methane, CH4.

If you reacted 600 g of trimethylgallium with 400 g of arsine. How many moles of the Ga(CH3)3 would remain?

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Our tutors have indicated that to solve this problem you will need to apply the Limiting Reagent concept. If you need more Limiting Reagent practice, you can also practice Limiting Reagent practice problems.