1. Chalk dropped into HCl 2. Alcohol just placed in a watch glass 3. Ignited alcohol 4. Heated Sugar 5. Sugar dissolved in water 6. Ammonium chloride dissolved in water 7. Salt dissolved in water 8. Mossy zinc added to sulfuric acid 9. Heated grains of sand
Try this its a chemistry questions!!!
2007-01-15 01:36:57 · 2 answers · asked by Romeo O 1 in Science & Mathematics ➔ Chemistry
1. CaCO3 + HCl ==> CaCl2 + CO2+ H2O
CO2 evolved causes effervescence! Chalk is basically Calcium Carbonate and the reaction is a neutralization reaction.
2. Alcohol just evaporates at room temperature!
C2H5OH(l) ==> C2H5OH(g)
3.C2H5OH + 3O2 ==> 2CO2 + 3H2O
.Heat is evolved during the reaction
4.Heated Sugar (if at a high temperature) it gets charred!
C12H22O11 ====> 12C + 11H2O
5.No reaction occurs!(no dissociation I meant)
6.Ammonium chloride dissolved in water
NH4Cl (aq)==> NH4 +(aq) + Cl-(aq)
7. Salt dissolved in water
NaCl(aq)==> Na +(aq) + Cl-(aq)
8.Zn(s) + H2SO4 ==> ZnSO4 + H2(g)
Hydrogen gas is liberated as in any maetal-acid reaction!
9.Grains of sand when heated to a high temperature form glass
It a homogenous polymer of SiO linkages.
Forgot the reaction!!
2007-01-15 02:03:03 · answer #1 · answered by Som™ 6 · 1⤊ 0⤋
that's no longer somewhat superb, in spite of the shown fact that that's actual sufficient to be very clever. inspect the meaning. 2 sodium atoms react with one chlorine molecule. The chlorine molecule is composed of two chlorine atoms chemically blended. This combines to form 2 sodium ions and a couple of chlorine ions. (The equation seems as though NaCl molecules exist, yet do no longer complication approximately that for the 2d.)
2016-12-12 11:50:34 · answer #2 · answered by kluesner 4 · 0⤊ 0⤋