Evaporation and boiling :)
If the ph value was3.6,H+is2.5x10-4
Silicon for example appears lustrous, but is not malleable<span> or ductile (it is </span>brittle<span> - a characteristic of some nonmetals).</span>
The given chemical equation is:
On balancing the equation we get,
Calculating enthalpy of formation of this reaction from the standard heats of formation of the products and reactants:
Δ
=[(-1669.8kJ/mol)+ {3* (-909.27 kJ/mol)}]-[(-3442kJ/mol)+{3*(-285.8 kJ/mol)}]
=[(-4397.61kJ/mol)]-[(-4299.4kJ/mol)]
=-98.21kJ/mol
Total enthalpy change when 15 mol of reacts will be=
This tablet <u>insufficient</u> to neutralize the acid in the patient's stomach
<h3>Further explanation</h3>
Reaction
Al(OH)₃(s) + 3HCl(aq) ⇒ 3 H₂O(l) + AlCl₃(aq)
0.25 g of Aluminum hydroxide-Al(OH)₃ , mol (MW=78 g/mol) :
mol HCl : mol Al(OH)₃ = 3 : 1
mass HCl (MW=36,46 g/mol) :
0.351 < 0.88⇒this tablet insufficient to neutralize the acid