Homework Help: Chemistry105

Posted by Mira on Tuesday, December 4, 2012 at 9:47pm.

1. (a) What is the molarity of a solution prepared by dissolving 4.315 g of NaOH in water to exactly 100 mL in a graduated flask? (Na = 23.0; O = 16.0' H = 1.0 amu).
(b) What volume of the above solution is required to neutralize exactly 25.00 mL of 0.1500 M HCl solution?
NaOH(aq) + HCl(aq) = NaCl(aq) + H2O(l)

Chemistry105 - DrBob222, Tuesday, December 4, 2012 at 10:08pm
mol NaOH = grams/molar mass= ?
M = mols/L = ? mols/0.1L

b)
mols HCl = M x L = ?
mols NaOH = mols HCl
M NaOH = mols/L soln. You know M NaOH and mols NaOH, solve for L NaOH and convert to mL if you wish.
Chemistry105 - Mira, Thursday, December 6, 2012 at 12:43am
Can you please plug in the numbers this is so confusing.

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