Q1. some crystals of baking soda were exposed to the atmosphere for efflorescence to take...

Q1.
some crystals of baking soda were exposed to the atmosphere for efflorescence to take place,6.02 of this partly effloresced washing soda na2co3.yh2o were dissolved in 500cm3 of water . 25cm3 of this trioxocarbonate4 required 32.12cm3 of 0.097 mol/dm3 hydrocloric acid hcl for complete neutralisation
A. Write a balanced equation for the reaction
B. Calculate theolar concentration of the trioxocarbonate 4
C. Calculate the mass concentration of na2co3.yh20
D. Determine the value of y and hence write the equation of the washing soda

Q2.
2g of a mixture of sodium hydroxide and sodium chloride (as inpurity) were dissolved in 500cm3 of water. If 25cm3 of this solution were neitralised by 21cm3 . 0.1 mol/dm3 hydrocholric acid, calculate the percentage if sodium chloride impurity

Q3.
250cm3 of 13.5 dm3 x2co3 .10h20 completely neutralised 24.85cm3 of 0.0950 mol/dm3 hcl
A. Write a balanced equation for the reaction
B. Calculate the concentration of x2co3.10h2o in mol/dm3
C.Calculate the molar mass of x2co3.10h20 in gdm3
D. Calculate the percentage by mass of x in x2co3.10h2o?

In Chemistry
1 Answers Available
Asked by Freeagent on 15th January, 2023