Problemas
If you start with 10.0 grams of lithium hydroxide (LiOH) how many grams of Ilthium bromide (LIBr) will be produced? LiOH+HBrarrow LBr+H_(2)O 7.58 758 2.76g 36.258 Multiple Choice 10 points
Roztwór
Acacio
maestro · Tutor durante 5 años
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(240 Votos)
Respuesta
To determine how many grams of lithium bromide (LiBr) will be produced from 10.0 grams of lithium hydroxide (LiOH), we need to follow these steps:1. **Write the balanced chemical equation:**
2. **Calculate the molar masses of the reactants and products:** - Molar mass of LiOH: \( 6.94 \, (\text{Li}) + 15.999 \, (\text{O}) + 1.008 \, (\text{H}) = 23.946 \, \text{g/mol} \) - Molar mass of LiBr: \( 6.94 \, (\text{Li}) + 79.904 \, (\text{Br}) = 86.854 \, \text{g/mol} \)3. **Convert the mass of LiOH to moles:**
4. **Use the stoichiometry of the reaction to find the moles of LiBr produced:** According to the balanced equation, 1 mole of LiOH produces 1 mole of LiBr. Therefore, 0.417 moles of LiOH will produce 0.417 moles of LiBr.5. **Convert the moles of LiBr to grams:**
Therefore, the correct answer is: