I only provided two choices, one is the answer i wrote which is
wrong, and another is the ''correct'' answer. The
other 2 choices are C6H6 and C10 H20. Ok ill try
to be calm but now that i typed it out it has gotta be C10H20 since
its the obvious alkene right? Still must blame the answer keey.
AHH, which stupid answer key gave the wrong answer. My thoughts
exactly. I think the answer is C10H20. Alkene.
Properties of sodium chloride
Hard, strong, high mp and bp, regular-shaped... what else?
They would only ask about the physical properties and wanna you
to link it to its structure, for NaCl.
Why not you ask, properties of acids?
Physical
Acids have a sour taste (don't try it)
Acids change the colours of indictors. For example, blue litmus
red.
Chemical
Acids produce a salt and hydrogen gas when reacted with a metal
of "reactable" nature.
Acids react with carbonates to produce a salt, CO2 and H2O
Acids react with bases/alkalis to produce a salt and water.
Based on the fact that calcium hydroxide is sparingly soluble in
water right? Gosh this is tricky.
Actually it's based on that CALCIUM cations do produce a
slightly white ppt with aqueous ammonia IF, IF, AND ONLY IF, the
calcium cations are in high concentrations, which is why I asked in
my first post.
And of course, when you react ammonium ions(in aq ammonia) with
ammonium ions(ammonium sulphate) you still get ammonium ions, no
brainer, thus no reaction.
EDIT: I think you got confused with this.
BP and MP is physical properties.
Yes, they ARE physical properties. You are asking why I said it
is a chemical property right? No, I didn't. When boiling or melting
a substance, they merely undergo a change in PHYSICAL state, not a
chemical change. Like what I said previously,
Chemical properties can only be observed with a chemical
reaction, a.k.a. the substance undergoes a chemical change.
Physical properties can be observed without the substance
undergoing a chemical change. Adding indictor is not a chemical
reaction, fyi, it's the indictor that changes not the
substance.
A chemical reaction for example, is something like this:
NaOH + HCl --> NaCl + H2O
The reactants undergo a chemical change to form a completely new
product. THAT IS A CHEMICAL CHANGE.
Ok? :D:D:D GL FOR TMR!!! CHIONG ARRRRRRR
