Question

1) Cati moli de magneziu reactioneaza cu 300 g de solutie HCL de concentratie 36,5% ?
2)Cu cate grame de clor reactioneaza 10g Mg de puritate 96% .. Cati ,oli de clorura de magneziu Mg Cl?
va rog ajutati-maa

Answer 1

1. [tex] m_{s} = 300 g HCl c= 36.5 % Mg= ? moli Mg+2HCl= MgCl_{2} + H_{2} M_{Mg} = 24 (1 mol Mg= 24 g) M_{HCl} = 36.5 (1 mol HCl= 36.5 g) m_{d} = c * m_{s} supra 100 m_{d} = 36.5 * 300 supra 100 m_{d} = 109.5 g HCl. 24 supra x = 2 * 36.5 supra 109.5 x = 24 * 109.5 supra 2 * 36.5 x= 36 g Mg 1 mol Mg........ 24 g x moli Mg........36 g 1 supra x = 24 supra 36 x = 36 supra 24 x = 1.5 moli Mg.[/tex]