Predict the formula and name of a binary compound formed from the following elements: (a) Na and H, (b) B and O, (c) Na and S, (
1 answer:
Answer and Explanation:
(a) Na and H : The compound formed by Na and H is sodium hydride which formula is NaH
(b) B and O : The compound formed by Ba and O is barium oxide which formula is BaO
(C) Na and S : The compound formed by Na and S is sodium sulfide which formula is
(D) Al and F : The compound formed by Al and F is aluminium fluoride which formula is
(E) F and O : The compound formed by F and O is oxygen fluoride which formula is
(F) Sr and Cl : The compound formed by Sr and Cl is strontium chloride which formula is
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Number of moles of HCl = 
=
= 0.763 mole
From balanced equation:
4 moles of HCl give 2 moles Cl2
0.763 mole HCl give ?? mole Cl2
by cross multiplication :
= 0.38 mole Cl2
mass of Cl2 = moles x molar mass = 0.38 x 70.9 = 27 g
=
From balanced equation:
4 moles of HCl give 2 moles Cl2
0.763 mole HCl give ?? mole Cl2
by cross multiplication :
= 0.38 mole Cl2
mass of Cl2 = moles x molar mass = 0.38 x 70.9 = 27 g