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QuestionChemistry

What mass of PH^3 (molar mass = 34.03 g/mol) is produced when 7.52 g of hydrogen reacts with excess phosphorus? (note: this is a special case where phosphorus exists as P^2
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Answer

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Step 1
: Write the balanced chemical equation for the reaction between hydrogen and phosphorus to produce phosphine (PH3).

The balanced equation is: P\_2 + 6H\_2 o 2PH\_3

Step 2
: Convert the given mass of hydrogen to moles using its molar mass.

The molar mass of hydrogen (H2) is 2 g/mol. The given mass of hydrogen is 7.52 g. To find the number of moles, divide the mass by the molar mass:

Final Answer

The mass of PH^3 produced is approximately 42.61 g.

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