Asksia AI LOGO

Sia

15240672380's Question
Chemistry
Posted 3 months ago

11) In an experiment, (120+Y)mL0.6MNa2SO4(120+\mathrm{Y}) \mathrm{mL} 0.6 \mathrm{M} \mathrm{Na}_{2} \mathrm{SO}_{4} solution is mixed with 300 mL0.45MBaCl2300 \mathrm{~mL} 0.45 \mathrm{M} \mathrm{BaCl}_{2} solution and BaSO4\mathrm{BaSO}_{4} precipitate (solid) is formed according to the below reaction. Calculate the amount of precipitate in grams. . (Atomic mass: Na=23,O=16, S=32,Ba=137,Cl=35\mathrm{Na}=23, \mathrm{O}=16, \mathrm{~S}=32, \mathrm{Ba}=137, \mathrm{Cl}=35 )
Na2SO4(aq)+BaCl2(aq)2NaCl(aq)+BaSO4( s)
\mathrm{Na}_{2} \mathrm{SO}_{4}(\mathrm{aq})+\mathrm{BaCl}_{2}(\mathrm{aq}) \rightarrow 2 \mathrm{NaCl}(\mathrm{aq})+\mathrm{BaSO}_{4}(\mathrm{~s})
Sign in to unlock the answer
Answer from Sia
Posted 3 months ago
Solution
1
Write the balanced chemical equation: The balanced chemical equation for the reaction between sodium sulfate and barium chloride is Na2SO4(aq)+BaCl2(aq)2NaCl(aq)+BaSO4(s) \mathrm{Na_2SO_4(aq) + BaCl_2(aq) \rightarrow 2NaCl(aq) + BaSO_4(s)}
2
Calculate moles of reactants: Use the molarity and volume to calculate the moles of Na2SO4\mathrm{Na_2SO_4} and BaCl2\mathrm{BaCl_2}. For Na2SO4\mathrm{Na_2SO_4}, moles = molarity ×\times volume in liters = 0.6M×(120+Y)mL×1L1000mL0.6 \, \mathrm{M} \times (120+Y) \, \mathrm{mL} \times \frac{1 \, \mathrm{L}}{1000 \, \mathrm{mL}}. For BaCl2\mathrm{BaCl_2}, moles = 0.45M×0.3L0.45 \, \mathrm{M} \times 0.3 \, \mathrm{L}
3
Determine the limiting reactant: The stoichiometry of the reaction is 1:1, so the reactant with fewer moles is the limiting reactant
4
Calculate moles of precipitate: The moles of BaSO4\mathrm{BaSO_4} precipitate will be equal to the moles of the limiting reactant due to the 1:1 stoichiometry
5
Calculate mass of precipitate: Use the molar mass of BaSO4\mathrm{BaSO_4} to convert moles to grams. Molar mass of BaSO4\mathrm{BaSO_4} = 137+32+4×16137 + 32 + 4 \times 16. Mass = moles of BaSO4\mathrm{BaSO_4} ×\times molar mass of BaSO4\mathrm{BaSO_4}
Answer
[Insert final answer here after calculating with the value of Y]
Key Concept
Limiting reactant determines the amount of product formed in a chemical reaction.
Explanation
The amount of BaSO4\mathrm{BaSO_4} precipitate is calculated by finding the limiting reactant and using its moles to find the mass of the precipitate.

Not the question you are looking for? Ask here!

Enter question by text

Enter question by image

Upgrade to Asksia Pro

Join a AskSia's Pro Plan, and get 24/7 AI tutoring for your reviews, assignments, quizzes and exam preps.

Unlimited chat query usages
Strong algorithms that better know you
Early access to new release features
Study Other Question