Problemas
LIOH+HBrarrow LIBr+H_(2)O with 10.0 grams of lithium hydroxide (LiOH) how many grams of lithium bromide (LiBr) will be produced? 7.5g 75g 2.768 36.258 Multiple Choice 10 points
Roztwór
Juan
professionell · Tutor durante 6 años
4.3
(211 Votos)
Respuesta
To solve this problem, we need to use the concept of stoichiometry and the balanced chemical equation.Given information:- The balanced chemical equation is:
- The mass of lithium hydroxide (LiOH) is 10.0 grams.Step 1: Calculate the molar mass of lithium hydroxide (LiOH).Molar mass of LiOH = 23.95 g/mol (Li) + 15.999 g/mol (O) + 1.008 g/mol (H) = 39.957 g/molStep 2: Calculate the number of moles of lithium hydroxide (LiOH).Number of moles of LiOH = 10.0 g / 39.957 g/mol = 0.250 molStep 3: Use the balanced chemical equation to determine the stoichiometric ratio between lithium hydroxide (LiOH) and lithium bromide (LiBr).From the balanced equation, we can see that 1 mole of LiOH reacts with 1 mole of HBr to produce 1 mole of LiBr.Step 4: Calculate the mass of lithium bromide (LiBr) produced.Mass of LiBr = Number of moles of LiBr × Molar mass of LiBrMass of LiBr = 0.250 mol × 86.845 g/mol = 21.76125 gTherefore, the correct answer is 2.768 grams of lithium bromide (LiBr) will be produced.