Question

what mass of zinc will be required to react completely with 1.0 M of HCl

Answer 1

Explanation:

2Zn+2HCl gives rise to 2ZnCl+H2.Two molar Zn is required to react with two moles of HCl.That mean one molar Zn is required to react with one mole of HCl.

Answer 2

Answer:

Explanation:

First write the balanced chemical equation.

1 Zn   +   2 HCl   ------->   1 ZnCl₂   +   1 H₂

Molarity = Moles of solute / One liter solution

     1 M means 1 molar in 1 liter of solution.

Therefore,

1 = Moles of solute / 1 L

Moles of Solute (HCl) = 1 moles (Itne moles apne pass hai, but req. moles of HCl are 2 acc. to the balanced equation )

2 moles HCL   ---------->    1 mole Zinc

1 mole HCl     ------------>     0.5 mole Zinc

moles of zinc = mass / molar mass

               0.5    = mass / 65

              mass = 0.5 * 65

Therefore, mass of Zinc = 32.5 g