Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
secondary 3 | Chemistry
One Answer Below
Anyone can contribute an answer, even non-tutors.
need help w Question 6 please!! Thank you!
Date Posted: 7 years ago
Views: 663
a) H3PO4 + 3NaOH -> Na3PO4 + 3H2O
b) Na2HPO3, NaH2PO4
C) Assumption: only sodium phosphate exist with no other possible salts exist. I will evaporate the water to obtain the crystal salt. After that wash with minimal amount of dry ethanol to dissolve and remove the impurities. Sodium phosphate has low solubility in ethanol.
b) Na2HPO3, NaH2PO4
C) Assumption: only sodium phosphate exist with no other possible salts exist. I will evaporate the water to obtain the crystal salt. After that wash with minimal amount of dry ethanol to dissolve and remove the impurities. Sodium phosphate has low solubility in ethanol.
See 1 Answer
Thanks
360 Tutoring Program