What are the two reasons why sulfuric acid is added to a filtered solution produced after the aluminum has reacted with the potassium hydroxide?

Which of the following best describes why magnesium hydroxide, found in milk of magnesia, is soluble in acidic solution? O According to Le Chatelier's principle, the acid will react with hydroxide ions in the solution, forming water and thereby decreasing the concentration of hydroxide ions in solution causing more magnesium hydroxide to dissolve. O Magnesium hydroxide does not dissolve in acidic solutions. O According to Le Chatelier's principle, the acid will react with magnesium ions in the solution, forming magnesium hydride and causing more magnesium hydroxide to dissolve. O According to Le Chatelier's principle, the acid will react with water in the solution, forming hydroxide ions and thereby decreasing the concentration of magnesium ions in solution causing more magnesium hydroxide to dissolve. O According to Le Chatelier's principle, the acid will react with hydroxide ions in the solution, forming a precipitate.

17. What does saturated solution mean? 18. An endothermic reaction a. absorbs heat b. releases heat 19. Activation energy is 3 a. The amount of energy of oxidation b. The amount of energy required to start a chemical reaction c. The amount of energy required to increase the temperature of 100 grams of water by 10°C.

If 14.3 g of NH3 is dissolved in 375. ml of water, what is the concentration of the resulting solution? .446 Molar .315 Molar .445 Molar 91.16 Molar 2.24 Molar

Write the balanced equation for the reaction between hydrochloric acid solution and sodium hydroxide solution.

A researcher wants to make a buffer using potassium dihydrogen phosphate. What mass of potassium dihydrogen phosphate in grams would the researcher need to make 1.0 liter of buffer with a concentration of 20. mM solution?

a. Solid sodium hydroxide is slowly added to 125 mL of a 0.275 M iron(II) sulfate solution until the concentration of hydroxide ion is 0.0204 M. The mass of iron(II) ion remaining in solution is  ?grams. b.  Solid silver nitrate is slowly added to 150 mL of a 0.196 M sodium carbonate solution until the concentration of silver ion is 0.0673 M. The percent of carbonate ion remaining in solution is  ?%. c. Solid sodium carbonate is slowly added to 75.0 mL of a 0.435 M magnesium acetate solution until the concentration of carbonate ion is 0.0465 M. The percent of magnesium ion remaining in solution is  ?%.

The test for lead (II) ion is determined of potassium chromate solution to form a yellow precipitate which is lead (II) chromate. -true -false