Write the net ionic equation for the reaction. c. aviscon states that each table

Question

Write the net ionic equation for the reaction. c. aviscon states that each tablespoon (15 ml) contains 95 mg of AI(OH), and 412 How many moles of hydronium ion can be neutralized by one tablespoon or 15. The label on liquid G Gaviscon? O 16. What is the purpose of the starch solution? 17. Hydrogen peroxide solutions are purchased from chemical suppliers at a 3% by mass concentration Calculate the molar concentration of a 3.0% Hio, solution, assuming a density of 1.0g/ml a. b. How do you prepare 100 ml of a 0.30 M KI solution, starting with solid KI (molar mass-166.0 g/mol)? 18. Which of the following 0.10 M solution is basic (pH>7)? (A) CH3COONa (B) NH4CI

Explanation / Answer

(15)

Moles of Al(OH)3 = Mass/MW = 0.095/78 = 0.0012

So, moles of hydroxide ions produced by this amount of Al(OH)3 = 3*0.0012 = 0.0036

Moles of MgCO3 = Mass/MW = 0.412/84.3 = 0.0049

So, moles of hydronium ions that can be neutralized by this amount of MgCO3 = 2*0.0049 = 0.0098

So, total hydronium ions that can be neutralized = 0.0036 + 0.0098 = 0.0134 moles

(16)

Starch solution is used to test the presence of iodine.

In the presence of iodine the starch solution turns violet.

Hope this helps !

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