Sodium chloride was prepared by neutralizing sodium hydroxide solution with dilute hydrochloric acid. The solution was gently heated to evaporate most of the water and allow the salt to crystallize. The crystals were separated from any remaining solution and dried on a father paper. However, the crystals are not necessarily completely dry. The salt may be required to be completely anhydrous, that is not containing any water. The prepared salt was analyzed for water by heating a sample in an oven at 110OC to measure the evaporation of water residual. Calculate the percentage of purity of the salt.
CHEMISTRY questions are much EASIER when you clear understand the concept. Smart Darasa provides space for teachers to contribute concepts and questions solutions in fun and interactive way.
Biology & Chemistry teacher,
Mapambano Education Center | Mwenge | DSM.
Contacts: +255 757 609 664 | +255 655 619 664
Are you a STUDENT | PARENT | TEACHER, Send your CHEMISTRY question for FREE and we will get back to you with the solution or relavant link with similar question. We receive questions every day from 08:00hrs to 16:00 EAT. Depend on volume of questions, we send solutions the same day from 18:00hrs to 20:00hrs EAT or later next day.