Gallium metal reacts with hydrogen chloride according to the equation 2Ga+6HCl---->2GaCl3+3H2.?

Question

a) How many grams of hydrogen chloride are required to completely react with
24.4 g of gallium metal?


b) How many grams of gallium chloride are formed?

Answer 1

2Ga+6HCl---->2GaCl3+3H2
This chemical reaction equation is balanced already.
So you need to find atomic mass of Ga: 69.723, and convert 24.4 g of gallium metal to # of moles: 24.4/69.723. Since one mole of Ga would react with 3 moles of HCl (as in the equation), we know that 3(24.4/69.723) moles of HCl is needed. Finally convert # of moles back to grams: 36.4606 x 3 x 24.4 /69.723 (g)

Please calculate (b) with the same reasoning.