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Chemistry Questions

Paddy223 · 2019-11-03 12:32:39

Anyone know much on some of these.. 1) A buffered solution contains 0.04 M CH3COOH (Ka for CH3COOH is 1.8 x 10-5 ) and 0.08 M CH3COONa. Calculate the pH of the solution using suitable equations. 2) Calculate the molarity of 4.2 grams of H2SO4 in 500 ml of solution. The molar mass is 98.1 g/mol. Then calculate the pH and…

03-11-2019 1:32pm

#1

Paddy223

Registered Users Posts: 145 ✭✭

Join Date: July 2018

Posts: 89

Anyone know much on some of these..

1) A buffered solution contains 0.04 M CH3COOH (Ka for CH3COOH is 1.8 x 10-5
) and
0.08 M CH3COONa. Calculate the pH of the solution using suitable equations.

2) Calculate the molarity of 4.2 grams of H2SO4 in 500 ml of solution. The molar mass
is 98.1 g/mol. Then calculate the pH and pOH of this solution.

3)What is the molarity of 10.0 g of cane sugar in 200 ml of H2O? The molar mass of
C12H22O11 - 342 g.

4) Hydrogen peroxide solution for hair bleaching is prepared by mixing 5.0 g of H2O2
per 100 ml of solution. What is the molarity and the % w/v of the solution?

0