I need to calculate the volume of hydrogen gas penerated when 3 mL of a 1M sodium borohydride reacts with conc. HCL. and then calculate the volume of hydrogen that can be liberated by reacting 1 g of zinc with acid. and write a balanced equation for the reaction of sodium borohydride with platinum chloride.
2006-11-27 22:41:07 · 3 answers · asked by Ron P 1 in Science & Mathematics ➔ Chemistry
NaBH4 + 2H2O → NaBO2 + 4H2
the moles of NaBH4 3*10^-3 * 1 = 3*10^-3
the moles of H2 : 4*3*10^-3 = 12*10^-3
the volume of H2 : 12*10^-3 * 22.4 = 0.2688L
2HCl + Zn => ZnCl2 + H2
the moles of Zinc : 1/65 moles
the moles of H2 : 1/65 moles
the volume of H2 : 1/65 * 22.4 = 0.3446 L
2006-11-28 01:18:07 · answer #1 · answered by James Chan 4 · 0⤊ 0⤋
It takes 2 moles of HCl to react with each and every mole of magnesium . on account which you have 3 molar answer of HCl you have extra acid , so the proscribing agent is the Mg. it is going to all react. Dr A has the maths..and as constantly, he's nice
2016-12-10 17:37:22 · answer #2 · answered by Anonymous · 0⤊ 0⤋
speak english
2006-11-27 22:43:21 · answer #3 · answered by funny.bones 2 · 0⤊ 0⤋