How many grams of 5.400 wt% aqueous HF are required to provide a 50% excess to react with 14.0 ml...

Question:

How many grams of {eq}5.400\ wt\% {/eq} aqueous {eq}\rm HF {/eq} are required to provide a {eq}50\% {/eq} excess to react with {eq}\rm 14.0\ ml {/eq} of {eq}\rm 0.0236\ M\ Th^{4+} {/eq} by the following reaction?

{eq}\rm Th^{4+} + 4F^- \to ThF4 (s) {/eq}.

Excess Reactant:

A reactant is said to be "in excess" when there is more volume (or mass, moles, etc.) available to react with the other reactant than is required by stoichiometric principles.

Answer and Explanation: 1

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The atomic mass of thorium is 232.04 g/mol, and the molar mass of HF is 20.01 g/mol. Since these react on a 1 : 4 mole basis, the required mass of HF...

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Calculating Reaction Yield and Percentage Yield from a Limiting Reactant

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Chapter 9 / Lesson 6
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How to calculate the theoretical yield? Learn the definition and formula of percent yield. Use the theoretical yield equation to calculate theoretical yield.


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