MYTUTOR SUBJECT ANSWERS

657 views

A student titrates 25.00 cm3 of hydrochloric acid with 28.60 cm3 sodium hydroxide solution of concentration 0.200 moles per dm3. The equation for the reaction is: HCl + NaOH to NaCl + H2O. Calculate the concentration of the hydrochloric acid.

From the equation given in the question we can see that one mole of hydrochloric acid (HCl) reacts with one mole of sodium hydroxide (NaOH). 

The first thing to do is to work out the number of moles of sodium hydroxide that reacted by using the equation n = cv (number of moles = concentration x volume). 

To do this we need to convert the volume 28.60 cm3 into dm(which is the same as litres). There are 1000 cm3 in a dmso 

28.60 cm= 28.60 / 1000 dm= 0.0286 dm3

Now we can use n = cv = 0.200 moles per dm3 x 0.0286 dm= 0.00572 moles of sodium hydroxide

Since one mole of hydrochloric acid reacts with one mole of sodium hydroxide, 0.00572 moles of hydrochloric acid reacted.

We can now use the equation n=cv and rearrange it to c = n/v to find the concentration of hydrochloric acid. 

The volume of hydrochloric acid again needs converting to dm3:

25.00 cm3 = 25.00/1000 dm3 = 0.025 dm3

c = n/v = 0.00572 moles / 0.025 dm3 = 0.23 moles per dm3

Hannah A. GCSE Chemistry tutor, GCSE Maths tutor

1 year ago

Answered by Hannah, who has applied to tutor GCSE Chemistry with MyTutor

Still stuck? Get one-to-one help from a personally interviewed subject specialist

157 SUBJECT SPECIALISTS

£18 /hr

Mrinank S.

Degree: Engineering (Masters) - Cambridge University

Subjects offered: Chemistry, Physics+ 4 more

Chemistry
Physics
Maths
Further Mathematics
Economics
-Oxbridge Preparation-

“Hey there! I'm a second year undergraduate student at the University of Cambridge, studying Engineering. I am really passionate about using science and maths to make the world around us a better place.  I am a patient and friendly tu...”

£18 /hr

Gabriella O.

Degree: Law (Bachelors) - Durham University

Subjects offered: Chemistry, Maths+ 3 more

Chemistry
Maths
Biology
.LNAT.
-Personal Statements-

“I am Gabriella and I am a 3rd year law student at Durham University. I love learning and would like to share this passion with you. I believe it important for everyone to achieve their best. Although I am studying law I took maths and ...”

£18 /hr

Matthew C.

Degree: Geography (Bachelors) - Oxford, St Catherine's College University

Subjects offered: Chemistry, Physics+ 1 more

Chemistry
Physics
Geography

“Hi, I'm Matt!I'm currently in my second year at Oxford University studying Geography. I achieved 3 A*'s in Geography, Physics and Chemistry at A-level and have a real interest and passion in these subjects. I was also involved in a t...”

About the author

£18 /hr

Hannah A.

Degree: Chemistry (Bachelors) - Durham University

Subjects offered: Chemistry, Maths

Chemistry
Maths

“Top tutor from the renowned Russell university group, ready to help you improve your grades.”

MyTutor guarantee

You may also like...

Posts by Hannah

A student titrates 25.00 cm3 of hydrochloric acid with 28.60 cm3 sodium hydroxide solution of concentration 0.200 moles per dm3. The equation for the reaction is: HCl + NaOH to NaCl + H2O. Calculate the concentration of the hydrochloric acid.

You are given a square which you are told has a total area of 100 squared centimetres. You are also told that one side of the square has dimension 4(3x + 2), and the other has dimension 8x - y. What are the values of x and y?

Other GCSE Chemistry questions

How do I calculate the relative formula mass of Calcium carbonate (CaCO3)

What is empirical formula and how is it worked out?

What do you get when you add an acid to a metal hydroxide?

What is the mass (in grams) of 0.1 moles of CaCO3?

View GCSE Chemistry tutors

Cookies:

We use cookies to improve our service. By continuing to use this website, we'll assume that you're OK with this. Dismiss

mtw:mercury1:status:ok