25cm3 of a 0.10moldm-3 solution of sodium hydroxide reacts exactly in a titration with 15cm3 HCl. What is the concentration of the hydrochloric acid?

First, write a balanced chemical equation to determine the ratio of the reacting species: NaOH + HCl --> NaCl + H2O Sodium hydroxide and hydrochloric acid react in a 1:1 ratio, so the number of moles of each is equal.Next, work out the number of moles of sodium hydroxide that react, using the n=cV equation. Remember to convert any volumes into dm3. (cm3 --> dm3 = x10-3 ) n(NaOH) = 0.025x0.1 = 0.0025Then use the n=cV equation to work out the concentration of HCl. Remember that since they react in a 1:1 ratio, the number of moles of HCl is equal to the number of moles of NaOH. n=cV so c=n/V c=0.0025/0.015 = 0.16666...moldm-3

EF
Answered by Elizabeth F. Chemistry tutor

10000 Views

See similar Chemistry A Level tutors

Related Chemistry A Level answers

All answers ▸

Can you explain acylation?


Discuss the trend in first ionisation energies across the second period of the periodic table.


The shape around the oxygen atom in butan-2-ol is non linear. Predict the shape and angle of the C-O-H bond giving explanations


The equilibrium N2O4 (g) -->--< 2NO2 (g) is set up when N2O4 dissociates. When 0.0370 moles of N2O4 dissociates at 25 degrees in a 0.5dm3 sealed container, 0.0310 moles of N2O4 remains at equilibrium. Calculate the value of Kc for this reaction.


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences