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drek231 [11]
3 years ago
13

Given the reaction 2NaOH + H2SO4 = Na2SO4 + 2H2O, what is the total number of grams of NaOH needed to react completely with 196

grams of H2SO4
Chemistry
1 answer:
ollegr [7]3 years ago
3 0

Answer:

160 g of NaOH

Explanation:

Reaction: 2NaOH + H₂SO₄ = Na₂SO₄ + 2H₂O

When a base and an acid react, the produce water and a salt. → Neutralization

In this reaction 2 moles of hydroxide need 1 mol of sulfuric acid to react, it is the same to say that 1 mol of sulfuric acid needs 2 moles of NaOH to react. We convert the mass of sulfuric to moles and we propose the rule of three:

196 g / 98 g/mol = 2 moles

1 mol of sulfuric acid needs 2 moles of NaOH to react

Then 2 moles of sulfuric acid will react with (2 . 2) /1 = 4 moles of NaOH

We convert the moles of base to grams → 4 mol . 40 g /1mol = 160 g

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To get the theoretical yield of ammonia NH3:
first, we should have the balanced equation of the reaction:
3H2(g) + N2(g) → 2NH3(g)
Second, we start to convert mass to moles
moles of N2 = N2 mass / N2 molar mass
                     = 200 / 28 = 7.14 moles
third, we start to compare the molar ratio from the balanced equation between N2 & NH3 we will find that N2: NH3 = 1:2 so when we use every mole of N2 we will get 2 times of that mole of NH3 so,
moles of NH3 = 7.14 * 2 = 14.28 moles 
finally, we convert the moles of NH3 to mass again to get the mass of ammonia:
mass of NH3 = no.moles * molar mass of ammonia
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3 years ago
If a car travels 400.0 meters in 20.0 seconds, how fast is it going?<br> m/s<br> Please help me
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8 0
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In the reaction below how would adding more of product C affect the equilibrium of the system? A+B arrows both ways C+D
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1. The reaction will proceed backward, shifting the equilibrium position to the left.

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Is 3Al + 3FeO → 2Al2O3 + 3Fe a balenced or unbalenced equation?
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3f+5=eo got it right
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Individual measurements introduce errors that may be large or small depending on the quality of the tools and processes used. Sc
kirill [66]

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