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Chapter 3: Q145CP (page 138)

Write a balanced equation for the reaction depicted below:

If each reactant molecule represents 1.25×10-2 mol and the reaction yield is 87%, how many grams of Si-containing product form?

Short Answer

Expert verified

The yield of the Si-containing product form is 3.4 g SiF4.

Step by step solution

01

Calculating the mass of SiF4

The chemical equation can be denoted as,

3SiH4+3N2F4→2SiF4+3N2+6H2

On dividing the equation by 3,

SiH4+N2F4→SiF4+N2+2H2

On calculating the mass,

MassofSiF(theoretical)=3.75×10-2molSiF4×104.08SiF41molSiF4MassofSiF(theoretical)=3.903gSiF4

02

Calculating the actual yield of SiF4

The actual yield can be denoted as,

%yieldofSiF4=actualyieldofSiF4theoreticalyieldofSiF4×100ActualyieldofSiF4=87×3.903gSiF4100ActualyieldofSiF4=3.4gSiF4

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Write balanced equations for each of the following by inserting the correct coefficients in the blanks:

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