8.00 g of white phosphorous burned in excess oxygen. The reaction product was dissolved in sufficient water to obtain 500 ml of solution. a) Write the balanced chemical equation for the reactions described. Explain why these products are formed. b) When the solution resulting from the second reaction was treated with an excess of aqueous barium chloride, a white precipitate was obtained. Write a balanced chemical equation for this exchange reaction and find the mass of the precipitate in grams. c) The precipitate from part b) was separated and the remaining solution was treated with an excess of metallic zinc, producing a colorless gas that was collected under normal conditions. Write the balanced chemical equation of the reaction that occurred, and indicate what that gas is and calculate its volume (assuming they behave like an ideal gas).
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
8.00 g of white phosphorous burned in excess oxygen. The reaction product was dissolved in sufficient water to obtain 500 ml of solution.
a) Write the balanced chemical equation for the reactions described. Explain why these products are formed.
b) When the solution resulting from the second reaction was treated with an excess of aqueous barium chloride, a white precipitate was obtained. Write a balanced chemical equation for this exchange reaction and find the mass of the precipitate in grams.
c) The precipitate from part b) was separated and the remaining solution was treated with an excess of metallic zinc, producing a colorless gas that was collected under normal conditions. Write the balanced chemical equation of the reaction that occurred, and indicate what that gas is and calculate its volume (assuming they behave like an ideal gas).
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