Doesnt this happen?seems immposible
BaNO3 + H2SO4---> BaSO4 + HNO3
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Doesnt this happen?seems immposible
wind pollinated insect pollinatedAtlast after a hell lot of chemistry, I have a biology question "How do we identify by looking at the petals, anthers and stigma of a plant if it's wind pollinated or insect pollinated?" there are a lot of questions regarding this, and most of the time I fail to answer them correctly!
it is possible(i guess) as BaCl and HCl r both aq.eg
BaCl2 + H2SO4 = BaSO4 + 2HCl
(by the way i just made it up so an ionic equation of this reaction might not be possible) :O
Can anyone help me with ionic equations please? I can do the simpler ones in which there is only one displacement. But when it comes to double displacement, i really suck at them.
well explainedit is very simple, as catine of more reactive metal will want to combine will anine which is more stable.
if u but AgNO3 and NaCl in aqueous form, Na being more reactive will prefer to combine will no3 which is more more stable. so Ag and Cl will combine. in this reactive NaNo3 is soluble but AgCl is not, therefore u will see white precipitate of AgCl. if both would have been soluble then there would be no precipitate.
actually they need to be in aqueous form because ions can only more in aqueous form so we need both of these salts to be soluble.
Ag-(aq) + Cl+(aq) + Na(aq)+ + NO3-(aq) ---> AgCl(s) + Na+(aq) + NO3(aq)-,
Na and NO3 will be still seperate ions so they will be written as ions in both sides, they wont combine until they are in solid form. AgCl however will combine as it is in solid form. u dont write Na and NO3 as they are in both sides. net equation will be this:
Ag-(aq) + Cl+(aq) => AgCl(s)
it is not necessary that more reactive ions will remain and less reactive will precipitate.
u should know that when u dissolve something lets say nacl, it is no more nacl, it is na+ and cl- seperately in water untill u dry it out. although silver chloride won't dissolve so it will be AgCl even in water.
spectator ions will be in both sides(show complete ions in complete equations) so dont show them in net equations.
in o level u r asked to write net ionic equation not complete
it is very simple, as catine of more reactive metal will want to combine will anine which is more stable.
if u but AgNO3 and NaCl in aqueous form, Na being more reactive will prefer to combine will no3 which is more more stable. so Ag and Cl will combine. in this reactive NaNo3 is soluble but AgCl is not, therefore u will see white precipitate of AgCl. if both would have been soluble then there would be no precipitate.
actually they need to be in aqueous form because ions can only more in aqueous form so we need both of these salts to be soluble.
Ag-(aq) + Cl+(aq) + Na(aq)+ + NO3-(aq) ---> AgCl(s) + Na+(aq) + NO3(aq)-,
Na and NO3 will be still seperate ions so they will be written as ions in both sides, they wont combine until they are in solid form. AgCl however will combine as it is in solid form. u dont write Na and NO3 as they are in both sides. net equation will be this:
Ag-(aq) + Cl+(aq) => AgCl(s)
it is not necessary that more reactive ions will remain and less reactive will precipitate.
u should know that when u dissolve something lets say nacl, it is no more nacl, it is na+ and cl- seperately in water untill u dry it out. although silver chloride won't dissolve so it will be AgCl even in water.
spectator ions will be in both sides(show complete ions in complete equations) so dont show them in net equations.
in o level u r asked to write net ionic equation not complete
well explained
but please note its cation and anion
Ag will be positive and Cl negative
The answer for 20 is C. The oxide of the element X is a catalyst. We know that most catalysts are from the transition metals, so among the 4 options, either D or C are transition elements, A is argon and B is magnesium. C is Manganese and is the answer since Lead (D) oxide and dioxide are good oxidizing agents rather than catalysts.http://papers.xtremepapers.com/CIE/Cambridge International O Level/Chemistry (5070)/5070_s10_qp_12.pdf
Can anyone explain Quesstion 20 and 21??
Plz anyone reply me soon. For 20 ans is C and for 21 A..
http://papers.xtremepapers.com/CIE/Cambridge International O Level/Chemistry (5070)/5070_s10_qp_12.pdf
Can anyone explain Quesstion 20 and 21??
Plz anyone reply me soon. For 20 ans is C and for 21 A..
Yes, neutralization occurs whenever a salt and water are formed (on reaction with acid of course).can neutralization occur by insoluble bases???
hmm kay thnxYes, neutralization occurs whenever a salt and water are formed (on reaction with acid of course).
read my last lineA
maybe??
C and D will be vigorous reactions, we can't react them safely.24
Which reactants could be used safely to prepare potassium chloride?
A aqueous potassium hydroxide and dilute hydrochloric acid
B aqueous potassium sulphate and aqueous sodium chloride
C potassium and aqueous sodium chloride
D potassium and dilute hydrochloric acid
the answer is A. Why can't it be B?
read my last line
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