At 80 °C, Kc = 1.87 x 10-³ for the reactionPH3BC13 (8) ⇒ PH3(g) + BC13 (9). If the flask has a volume of 0.26 L, what is the minimum mass of PH3BC13 (s) that must be added to the flask to achieve equilibrium?Express your answer to three significant figures and include the appropriate units.ValueUnits?

We will first calculate the concentration of PH3 and BCl3 from Kc. as PH3BCl3 is in the solid state.…

Answered: If the flask has a volume of 0.26 L,…

Chemistry

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ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

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At 80 °C, Kc = 1.87 x 10-³ for the reaction
PH3BC13 (8) ⇒ PH3(g) + BC13 (9).

If the flask has a volume of 0.26 L, what is the minimum mass of PH3BC13 (s) that must be added to the flask to achieve equilibrium?
Express your answer to three significant figures and include the appropriate units.
Value
Units
?

Expert Solution

Step 1

We will first calculate the concentration of PH₃ and BCl₃ from K_c. as PH₃BCl₃ is in the solid state.

${PH}_{3} {BCl}_{3} (s) \leftrightarrow {PH}_{3} (g) + {BCl}_{3} (g) K_{c} = \frac{[{PH}_{3}] [{BCl}_{3}]}{1} as {PH}_{3} {BCl}_{3} in solid state K_{c} = [{PH}_{3}] [{BCl}_{3}]$

The molar mass of PH₃BCl₃=151.13g/mol

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