A 8.67−g sample of a Cu-Zn alloy reacts with HCl acid to produce hydrogen gas. If...

A 8.67−g sample of a Cu-Zn alloy reacts with HCl acid to produce hydrogen gas. If the hydrogen gas has a volume of 1.63 L at 20°C and 745 mmHg, what is the percent of Zn in the alloy?

Solutions

Expert Solution

queen_honey_blossom answered 1 year ago

Next > < Previous

Related Solutions

In a reaction of Zn (0.53 g) & HCl what is the volume of Hydrogen gas...

In a reaction of Zn (0.53 g) & HCl what is the volume of Hydrogen gas generated? (assume atmospheric pressure)

2.70g of Zn (s) reacts with 50.0 mL of 1.00 M HCl solution to produce hydrogen...

2.70g of Zn (s) reacts with 50.0 mL of 1.00 M HCl solution to produce hydrogen gas according to the reaction. (R = 0.08206 L·atm·K-1·mol- 1) Zn(s) + 2HCl (aq) = ZnCl2 (aq) + H2(g) a) calculate mole of Zn used in this reaction b) calculate mole of HCl used in this reaction c) calculate which reactant is a limiting reactant d) calculate mole of hydrogen gas formed e) calculate volume of H2 gas at STP in Liters that will...

The reaction of the alloy with the acid is exothermic. If the hydrogen gas released is...

The reaction of the alloy with the acid is exothermic. If the hydrogen gas released is warmer than the water temperature and you use the incorrect low temperature, how would this effect your calculated %Al result (high or low)? Explain. A student performs three runs of the experiment using pure aluminum and determines an average NH2 of 0.01156 mol/g and a standard deviation of 0.00001 mol/g. What do these results tell you about the random and systematic errors present in...

Mg metal reacts with HCl to produce hydrogen gas. Mg(s)+2HCl(aq)→MgCl2(aq)+H2(g)......A)What volume of hydrogen at 0 ∘C...

Mg metal reacts with HCl to produce hydrogen gas. Mg(s)+2HCl(aq)→MgCl2(aq)+H2(g)......A)What volume of hydrogen at 0 ∘C and 1.00 atm (STP) is released when 9.25 g of Mg reacts B)How many grams of magnesium are needed to prepare 3.90 L of H2 at 730 mmHg and 20 ∘C

Zinc (Zn) metal reacts with hydrochloric acid (HCl) according to the following reaction: Zn(s) + 2...

Zinc (Zn) metal reacts with hydrochloric acid (HCl) according to the following reaction: Zn(s) + 2 HCl(aq) ZnCl2(aq) + H2(g)What volume of H2 gas would be collected over water if 6.93 g Zn metal were allowed to react with 25.0 mL of 1.0 M HCl at 25.0 oC? The vapour pressure of water at 25.0 oC is 23.8 torr, and the pressure of the laboratory is 1.00 atm

18. Hydrogen gas reacts with oxygen gas to form water vapor. If 34.5 g of hydrogen...

18. Hydrogen gas reacts with oxygen gas to form water vapor. If 34.5 g of hydrogen gas react with 26.6 g of oxygen gas, how many grams of water vapor will be produced? 2H2(g) + O2(g) --> 2H2O(g) 20. The reaction of 22.5 g of Fe with excess of oxygen gas produced 24.2 g of Fe2O3. Calculate the percent yield. 21. Milk of magnesia contains magnesium hydroxide. Mg(OH)2 reacted with HCl to form aqueous magnesium chloride and liquid water. Write...

21. In the Haber - Bosch process, hydrogen gas reacts with nitrogen gas to produce ammonia...

21. In the Haber - Bosch process, hydrogen gas reacts with nitrogen gas to produce ammonia according to the following equation 3 H 2 (g) + N 2 (g) → 2 NH 3 (g) The production of ammonia is difficult and often results in lower yields than those predicted from the chemical equation. For instance, if 1.36 g of hydrogen gas are allowed to react with 9.97 g of nitrogen gas, 2.24 g of ammonia are produced. What is the...

Hydrogen gas reacts with nitrogen gas to form ammonia according to the reaction below. H2 (g)...

Hydrogen gas reacts with nitrogen gas to form ammonia according to the reaction below. H2 (g) + N2 (g) → NH3 (g) a. How many moles of NH3 are produced for every 1 mole of H2? Classify this reaction. b. Suppose 12.2 g of H2 (g) reacts with 48.4 g of N2 (g). Identify the limiting reactant. What is the theoretical yield of the ammonia product in grams ? Show your work. c. What mass (in grams) of the excess...

Hydrogen gas can be prepared by reaction of zinc metal with aqueous HCl: Zn(s)+2HCl(aq)→ZnCl2(aq)+H2(g) How many...

Hydrogen gas can be prepared by reaction of zinc metal with aqueous HCl: Zn(s)+2HCl(aq)→ZnCl2(aq)+H2(g) How many liters of H2 would be formed at 636 mm Hg and 17 ∘C if 27.0 g of zinc was allowed to react? How many grams of zinc would you start with if you wanted to prepare 6.85 L of H2 at 284 mm Hg and 28.5 ∘C?

Hydrogen gas can be prepared by reaction of zinc metal with aqueous HCl : Zn(s)+2HCl(aq)→ZnCl2(aq)+H2(g) 1)How...

Hydrogen gas can be prepared by reaction of zinc metal with aqueous HCl : Zn(s)+2HCl(aq)→ZnCl2(aq)+H2(g) 1)How many liters of H2 would be formed at 592 mm Hg and 17 ∘C if 25.5 g of zinc was allowed to react? 2)How many grams of zinc would you start with if you wanted to prepare 4.60 L of H2 at 294 mm Hg and 34.5 ∘C ?

Subjects