How many NaOH is required to neutralize 1500cm^3 of 0.1N HCl? a. 60g b. 6g c. 4g d. 40g

The answer is b) 6 g

Start by writing the balanced chemical equation for this

##NaOH_((aq)) + HCl_((aq)) -> NaCl_((aq)) + H_2O_((l))##

Notice that you have a ##1:1## between sodium hydroxide and hydrochloic acid; this means that a complete would require equal numbers of moles of sodium hydroxide and hydrochloric acid.

Now, you know that the hydrochloric acid solution has a normality of 0.1 N. Normality is simply a measure of reactivity, meaning that it is calculated by taking into account how a substance behaves in a particular reaction.

Hydrochloric acid dissociates in aqueous solution to rpoduce

##HCl_((aq)) -> H_((aq))^(+) + Cl_((aq))^(-)##

The net ionic equation for your reaction will be

##OH_((aq))^(-) + H_((aq))^(+) -> H_2O_((l))##

In your case, a 0.1 N solution means that the hydrochloric acid solution provides 0.1 moles of protons, ##H^(+)##, per liter to the reaction.

Since 1 mole of ##”HCl”## produces 1 mole of ##H^(+)##, the of the solution will be equal to ##”0.1 mol/L”##.

The volume of the solution will be

##1500color(red)(cancel(color(black)(“cm”^3))) * (“1 dm”””^3)/(1000color(red)(cancel(color(black)(“cm”^3)))) = “1.5 dm”””^3##

This means that you can now calculate how many moles of hydrochloric acid took part in the reaction (remember that ##”1 dm”^3 = “1 L”##)

##C = n/V implies n = C * V##

##n_”HCl” = 0.1 “moles”/color(red)(cancel(color(black)(“L”))) * 1.5color(red)(cancel(color(black)(“L”))) = “0.15 moles HCl”##

The aforementioned mole ratio tells you that the number of moles of sodium hydroxide needed to neutralize this many moles of hydrochloric acid is

##n_(NaOH) = n_(HCl) = “0.15 moles”##

To get the mass of sodium hydroxide needed, use its molar mass

##0.15color(red)(cancel(color(black)(“moles”))) * “40.0 g”/(1color(red)(cancel(color(black)(“mole”)))) = color(green)(“6 g”)##

Calculate Your Essay Price
(550 words)

Approximate price: $22

Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
The price is based on these factors:
Academic level
Number of pages
Basic features
  • Free title page and bibliography
  • Unlimited revisions
  • Plagiarism-free guarantee
  • Money-back guarantee
  • 24/7 support
On-demand options
  • Writer’s samples
  • Part-by-part delivery
  • Overnight delivery
  • Copies of used sources
  • Expert Proofreading
Paper format
  • 275 words per page
  • 12 pt Arial/Times New Roman
  • Double line spacing
  • Any citation style (APA, MLA, Chicago/Turabian, Harvard)

Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

Read more

Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

Read more

Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.

Read more

Privacy policy

Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.

Read more

Fair-cooperation guarantee

By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.

Read more

Order your essay today and save 10% with the coupon code: best10