When 14.0 g of zinc metal reacts with excess hcl, how many liters of h2 gas are produced at stp? when 14.0 g of zinc metal reacts with excess hcl, how many liters of h2 gas are produced at stp? 9.60 l 4.80 l 0.208 l 0.416 l?

The chemical reaction is given as:

First, calculate the number of moles of zinc:

Number of moles =

Given mass of zinc = and molar mass of zinc =

Number of moles =

=

Now, moles of hydrogen = ( as 1 mole of zinc gives 1 mole of hydrogen)

=

= of hydrogen.

Volume of hydrogen is calculated by:

where, P = pressure = 1 atm at STP

V = volume

n= number of moles

R = gas constant =  

T = temperature= 273 K at STP

Now, insert the values in formula, we get

Thus, volume of hydrogen is i.e. second option is the correct answer.

answer

the ions in solute supperate from eachouthere

a

explanation: