chemistry

posted by .

for this question
How many liters of H2 gas at STP are produced
when Zn reacts with 125 mL of 6.00 M HCl?

my book answers it this way:


0.125 L x 6.00 mole HCl x 1 mole H2 x 22.4 L
1 L 2 mole HCl 1 mole

= 8.40 L of H2 gas
where did the 22.4L come from?

  • chemistry -

    at STP (standard temperature and pressure: T = 0 deg C , P = 1 atm), one mole of gas occupies a volume 22.4 L . or to you can derive this one using ideal gas law:
    PV = nRT
    where
    P = 1 atm (STP)
    T = 273.15 K (STP)
    R = gas constant = 0.0821 L*atm/mol-K
    n = 1 mol

    hope this helps~ :)

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chemistry

    I have a 0.25 m aquaeous solution of HCL. It's density is 1.05 g/ml. WHat is the % by mass (m/m) of this solution?
  2. Chemistry

    2KMnO4(aq)+16HCl(aq)->2MnCl2(aq)+5Cl2(g)+8H2O(l)+2KCl(aq) A.)the volume of 0.414 M KMnO4 needed to produce 1.66 mol MnCl2 B.) the volume of 2.15 M HCl needed to produce 112 mL of 0.618 M KCl C.)the molarity (M) of the HCl solution …
  3. Chemistry

    How many liters of chlorine gas can be produced when 0.98 L of HCl react with excess O2 at STP?
  4. Chemistry

    How many liters of chlorine gas can be produced when 0.98 L of HCl react with excess O2 at STP?
  5. Chemistry

    How many liters of chlorine gas can be produced when 0.98 L of HCl react with excess O2 at STP?
  6. Chemistry

    Please help me out! Gas law homework! How many liters of HCl (g) at STP can be produced from 5.44 g of Cl2 and excess H2 according to the following equation?
  7. Chemistry

    If 35.0 mL of 0.210 M HCl reacts with excess Mg, how many mL of hydrogen gas are produced at STP?
  8. Chemistry

    If 35.0 mL of 0.210 M HCl reacts with excess Mg, how many mL of hydrogen gas are produced at STP?
  9. Chemistry

    1.Cell respiration glucose is reacted wth oxygen in body to produce carbon dioxide and water how many liters of carbon dioxide would be produced if 90.0 g of glucose completely reacts with oxygen C6H12O6(s)+ 6O2(g) -> 6H2O(g) + …
  10. Chemistry HW Need answers

    1.Cell respiration glucose is reacted wth oxygen in body to produce carbon dioxide and water how many liters of carbon dioxide would be produced if 90.0 g of glucose completely reacts with oxygen C6H12O6(s)+ 6O2(g) -> 6H2O(g) + …

More Similar Questions