cameroon gce A level June 2019 chemistry 2

cameroon gce A level June 2019 chemistry 2

1. (i) What is a molar solution?
(ii) Calculate the mass of Na
2S203.5H20 needed to prepare 250 cm3 of a 0.011 M solution in a volumetric flask. (RMM = 248)
(2 marks)
(b) Calculate the percentage yield when 2.30 g of ethanol reacts completely with excess ethanoic acid to give 3.52 g of ethyl
ethanoate. (RMM: Ethanol = 46; Ethylethanoate = 88.0)

PDF is loading please wait...




Comments

comments

One comment on “cameroon gce A level June 2019 chemistry 2

Leave a comment

Your email address will not be published. Required fields are marked *

Download our application
kawlo
sponsors Ads