2NaCN(s) + H₂SO₄(aq) --> Na₂SO₄(aq) + 2HCN(g)
The molar ratio between NaCN : HCN is 2:2 or 1:1
Mass of HCN = 16.7 g
Molar mass of HCN = 1 + 12 + 14 = 27 g/mol
Molar mass of NaCN = 49 g/mol
Therefore, the mass of NaCN is
16.7 g of HCN x 49 g/mol of NaCN / 27 g/mol of HCN = 30.3 grams of NaCN
Therefore, 30.3 grams of NaCN gives the lethal dose in the room.
Explanation:
The Chemical Equations are;
H2CO3 --> H2O + CO2
8Cu + S₈ --> 8 Cus
BaCO3 --> BaO + CO2
P₄ + 502 --> 2P205
KCIO3 --> KCI + O2
8Fe + S₈ --> 8Fes
The Reactions are;
Synthesis Reaction
Decomposition Reaction
A synthesis reaction occurs when two atoms or molecules react to form a different molecule or compound.
A decomposition reaction; a compound breaks into two or more products.
H2CO3 --> H2O + CO2 (Decomposition reaction)
8Cu + S₈ --> 8 CuS (Synthesis reaction)
BaCO3 --> BaO + CO2 (Decomposition reaction)
P₄ + 502 --> 2P205 (Synthesis reaction)
KCIO3 --> KCI + O2 (Decomposition reaction)
8Fe + S₈ --> 8Fes (Synthesis Reaction)
Explanation:
Solids have definite shape and distinct boundaries as such the intermolecular forces between them is maximum