Zinc dissolves in hydrochloric acid to yield hydrogen gas. What mass of hydrogen gas is produced when a 4.30 g sample of zinc dissolves in 250.mL of 2.800 M HCl? What is the percent yield if 0.109 g of hydrogen were produced?
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Zinc dissolves in hydrochloric acid to yield hydrogen gas. What mass of hydrogen gas is produced...
Hydrogen gas is produced by the reaction of hydrochloric acid, HCl, on zinc metal. 2HCl (aq) + Zn (s) --> ZnCl2 (aq) + H2 (g) The gas is collected over water. If 106 mL of gas is collected at 28C and 775 mmHg, what is the mass of hydrogen collected? (vapor pressure of water at 28C is 25.6 mmHg)
Zinc reacts with hydrochloric acid to form hydrogen gas. A 0.258 g sample of Zinc reacts with 25.0 mL of 0.250 M HCI solution. What volume does the hydrogen has formed occupy at 24.0 °C and 0.990 atm? Zn(s) + 2HCl(aq) --ZnCl2(aq) + H2(g) 33.0 mL 97.3 mL 6.21 mL 77.0 mL
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10. Zinc metal reacts with hydrochloric acid to form zinc chloride and hydrogen gas. a. Write a balanced reaction (2 pts) b. How many moles of HCl are consumed per 0.4 mole of zinc? (3pts) C. What volume of hydrogen gas is produced at standard temperature and pressure per 2.5 g of zinc used? (6 pts)
Hydrogen gas was produced by reacting 0.976 g of zinc metal with excess hydrochloric acid. Write a balanced reaction equation (include states). If 376 mL of hydrogen gas is collected over water at 25 °C at a total pressure of 751 mm Hg, what was the experimental molar mass of Zn? 1. Write a balanced reaction equation (include states). 2. What was the experimental molar mass of Zn? Answer to the correct number of significant figures. 3. Calculate the %...
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Q2 part1. Hydrogen gas can be readily prepared by reacting zinc metal with hydrochloric acid: Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g) A sample of zinc metal was decomposed in hydrochloric acid and the hydrogen gas was collected over water. The volume of gas collected is 0.798 L at 25oC and a total pressure of 735 torr. How many grams of zinc were decomposed assuming there is an excess of hydrochloric acid? [Hint: the vapor pressure of water at 25oC...
A 20.00 g mixture of magnesium and zinc metal reacting with excess hydrochloric acid produced 1.212 g of hydrogen gas. What is the percent zinc in the original mixture?
Zinc will react with hydrochloric acid to give hydrogen in accord with the equation given below. How many mL of a 3M solution HCL are required to react with 10.0 g of zinc? ( Molar mass of Zn=(65.41 g/mol ) Zn(s) + 2 HCL(aq) ====>ZnCl2(aq) + H2 (g)
Hydrogen gas is produced by the reaction between metallic aluminum and aqueous hydrochloric acid. 2 Al(s) + 6 HCl(aq) — 2 AICI, (aq) + 3 H, (g) The hydrogen gas produced by this reaction is typically collected via water displacement. During this process, the hydrogen gas becomes saturated with water vapor. If 294.9 mL of gas with a total pressure of 1.33 atm is collected via water displacement at 29.4 "C, what is the partial pressure of the hydrogen gas...