1/ Calculate the volume of 0.280-M NaOHsolution needed to completely neutralize 27.4 mLof a 0.560-M solution of themonoprotic acid HBr.
2/ To determine the molar mass of an organic acid, HA, wetitrate 1.047 g of HA with standardized NaOH.Calculate the molar mass of HA assuming the acid reacts with37.17 mL of 0.469 M NaOHaccording to the equation
HA(aq) + NaOH(aq) → NaA(aq) + H2O(ℓ)
3/
2 NaBH4(aq) + H2SO4(aq) → 2H2(g) + Na2SO4(aq) +B2H6(g)
What volume, in mL, of a 0.504 M solution ofNaBH4 is required to produce 0.539 g ofB2H6? H2SO4 is presentin excess.
please help me with all the questions i really need help toprepare for final!
