Question

Aluminum reacts with excess hydrochloric acid to form aqueous aluminum chloride and 111.1 ml of hydrogen...

Aluminum reacts with excess hydrochloric acid to form aqueous aluminum chloride and 111.1 ml of hydrogen gas over water at 26°C and 0.82 atm. (Vapor pressure of water at 26ºC = 25.2 mmHg.) How many grams of aluminum reacted?

Homework Answers

Answer #1

Al reacts with water to form AlCl3 and H2 gas

2 Al(s) + 6 HCl(aq) ----------> 2 AlCl3(aq) + 3 H2(g)

2 moles of Al produces 3 moles of H2 gas

Given that, Vol. of H2 = 111.1 mL - 0.111L, Temp. = 26+273 = 299 K, Pressure = (0.82 atm - 0.033 atm) = 0.787 atm

Ideal gas equation is given by, PV=nRT

n = PV/RT = 0.787*0.111/0.0821*299 = 0.0035 moles

No. of moles of H2 gas produced = 0.0035 moles

Since, 2 moles Al = 3 moles H2

then x ? = 0.0035 moles

x = 2*0.0035/3 = 0.0023 moles of Al

Amount of Al = moles * molar mass = 0.0023*27 = 0.063 gms

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
1. Aluminum reacts with excess hydrochloric acid to form aqueous aluminum chloride and 156 ml of...
1. Aluminum reacts with excess hydrochloric acid to form aqueous aluminum chloride and 156 ml of hydrogen gas over water at 26°C and 0.956 atm. (Vapor pressure of water at 26ºC = 25.2 mmHg.)     How many grams of aluminum reacted? Enter to 3 decimal places.
Aluminum reacts with excess hydrochloric acid to form aqueous aluminum chloride and 49.6 mL of hydrogen...
Aluminum reacts with excess hydrochloric acid to form aqueous aluminum chloride and 49.6 mL of hydrogen gas over water at 27°C and 751 mmHg. How many grams of aluminum reacted? The partial pressure of water at 27°C is 26.8 mmHg.
5) Aluminum reacts with excess hydrochloric acid to form aqueous aluminum chloride and 43.0 mL of...
5) Aluminum reacts with excess hydrochloric acid to form aqueous aluminum chloride and 43.0 mL of hydrogen gas over water at 27°C and 751 mmHg. How many grams of aluminum reacted? The partial pressure of water at 27°C is 26.8 mmHg. __gAl Thank you!
Elemental (metallic) aluminum (Al) is reacted with hydrochloric acid (HCl) to yield aluminum chloride and hydrogen...
Elemental (metallic) aluminum (Al) is reacted with hydrochloric acid (HCl) to yield aluminum chloride and hydrogen gas. How many grams of metallic aluminum would be required to produce 1 gram of pure hydrogen gas? REMEMBER to balance the reaction and show all steps.
Zinc reacts with aqueous sulfuric acid to form hydrogen gas: Zn(s) + H2SO4(aq) → ZnSO4(aq) +...
Zinc reacts with aqueous sulfuric acid to form hydrogen gas: Zn(s) + H2SO4(aq) → ZnSO4(aq) + H2(g) In an experiment, 225 mL of wet H2 is collected over water at 27 °C and a barometric pressure of 765torr. How many grams of Zn have been consumed? The vapor pressure of water at 27 °C is 26.74 torr.
Zinc metal reacts with hydrochloric acid to produce zinc chloride and hydrogen gas according to the...
Zinc metal reacts with hydrochloric acid to produce zinc chloride and hydrogen gas according to the equation below. What volume of hydrogen gas would be produced at 0.998 atm and 27 degrees C if 15.11 g of zinc reacted with excess hydrochloric acid? Zn(s) + 2HCl(aq) ---> ZnCl2(aq) + H2(g)
When 0.854 g of impure zinc reacted with an excess of hydrochloric acid, 244 mL of...
When 0.854 g of impure zinc reacted with an excess of hydrochloric acid, 244 mL of hydrogen gas was collected over water at 10.0 °C. The external pressure was 714.96 Torr. The vapor pressure of water at various temperatures can be found in this table. a. Calculate the volume the dry hydrogen would occupy at 1.00 atm and 298 K. b. What amount, in moles, of H2 gas was collected at 10.0 °C? c.Calculate the percentage purity of the zinc...
A piece of zinc reacts with hydrochloric acid to form zinc chloride and hydrogen gas, which...
A piece of zinc reacts with hydrochloric acid to form zinc chloride and hydrogen gas, which is collected over water at 150 C into a large flask. The total pressure is adjusted to 1.00 bar, and the volume is 1495 mL (a) What is the PH2? (ANSWER = 0.98 bar) (b) What is the mass of H2? (ANSWER = 0.12 g) (c) What mass of Zn was used in this process? (ANSWER = 4.0 g please show me the steps>>>>
When excess nitric acid reacts with 1.68 g of iron, 842 mL of hydrogen gas is...
When excess nitric acid reacts with 1.68 g of iron, 842 mL of hydrogen gas is collected over water. If the barometric pressure is 833 mmHg and the temperature of the water is 34°C, what is the calculated value of R, in atmL/molK? (Water vapor pressure at 34°C = 39.90 mmHg) __Fe(s) + __HNO3(aq) → __Fe(NO3)2 + __H2(g)
A) Zinc metal reacts with excess hydrochloric acid to produce hydrogen gas according to the following...
A) Zinc metal reacts with excess hydrochloric acid to produce hydrogen gas according to the following equation: Zn(s) + 2HCl(aq) ------------> ZnCl2(aq) + H2(g) The product gas, H2, is collected over water at a temperature of 20 °C and a pressure of 757 mm Hg. If the wet H2 gas formed occupies a volume of 7.17L, the number of moles of Zn reacted was ___________ mol. The vapor pressure of water is 17.5 mm Hg at 20 °C. B) Oxygen...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT