Asked by Tyler Jones
What is the minimum amount of 5.2M H2SO4 necessary to produce 22.8g of H2 (g) according to the following reaction? 2Al(s)+3H2SO4(aq)→Al2(SO4)3(aq)+3H2(g)
(Please be precise and clear)
(Please be precise and clear)
Answers
Answered by
DrBob222
1. You have the balanced equation.
2. How many mols H2 do you want? That's mols = grams/molar mass.
3. Using the coefficients in the balanced equation, convert mols H2 to mols H2SO4.
4. Then M = mols/L. You know M H2SO4 and mols H2SO4, solve for L H2SO4.
This four step method will work just about any strictly stoichiometry problem. With a slight modification it will also work limiting regent problems.
2. How many mols H2 do you want? That's mols = grams/molar mass.
3. Using the coefficients in the balanced equation, convert mols H2 to mols H2SO4.
4. Then M = mols/L. You know M H2SO4 and mols H2SO4, solve for L H2SO4.
This four step method will work just about any strictly stoichiometry problem. With a slight modification it will also work limiting regent problems.
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