Posted by Sarah on Friday, April 15, 2011 at 11:42am.
first we balance the given chemical equation, thus:
2NaOH + H2SO4 -> Na2SO4 + 2H2O
note that we need to balance a chemical equation because we need their stoichiometric coefficients (number before the chemical formula of a compound or element) to make ratios.
since we are given the mass of NaOH, we first find its molar mass. from the periodic table of elements, masses of Na, O and H are
Na = 23 , O = 16 , H = 1 thus
23 + 16 + 1 = 40 g/mol
therefore, we start with the given. and we solve for the number of moles of H2SO4 produced for a given amount of NaOH:
315 g NaOH * (1 mol NaOH / 40 g NaOH) * (1 mol H2SO4 / 2 mol NaOH) = 3.9375 mol H2SO4
since we need to find the volume (in liters) of H2SO4 given the molarity, recall that molarity (concentration) is given by
M = n / V
where n = moles and V = volume (in L)
substituting,
12 = 3.9375/V
V = 3.9375/12
V = 0.328 L
*are you sure with the answer 0.43 ?
hope this helps~ :)
Related Questions
Titrations (chem) - In the titration of a 0.101 M sodium hydroxide solution, 19....
Gen Chem 1 - A tanker truck carrying 2.01×10^3kg of concentrated sulfuric ...
chem - Some sulfuric acid is spilled on a lab bench. It can be neutralized by ...
Chemistry II - A 12.00 mL sample of sulfuric acid from an automobile battery ...
Chemistry - What volume of 3.0M sodium hydroxide will be needed to neutralize 2....
chem - Aluminum hydroxide and sulfuric acid neutralize to make water and ...
chem - which one of the following statements about sulfuric acid is correct? A. ...
chemistry - More dilute sodium hydroxide solutions are often prepared from a ...
chem - If you have a .045 M solution of sodium hydroxide, how many mL of the ...
chemistry - The equivalent weights of X and Y are _________ g/equiv. H+ and g/...
For Further Reading
