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I guess ill be this wayHi, had a doubt in chemistry
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Chemistry (0620)/0620_w10_qp_33.pdf
question 5b (iv) Need a diagram to understand
how do u noe dat u minus?because you know that tin is more reactive than copper and its cell produces a voltage of 0.5 and a zinc and copper cell produces a voltage of 1.1.
so a zinc and tin will produce 1.1-0.5=0.6 voltage
fishcook explains it in a good way,how r u supposed 2 noe dat? plz xplain, n sorry
when a carboxylic acid reacts with bases it loses the H atom from the group COOH to become COO- and H+ ions
so 2 COOH groups have to be there then only 2 H+ ions will form.
whatever number of atoms remain from the molecular formula after the 2 COOH are the rest of the molecule.
thxfishcook explains it in a good way,
?this and you need to know some general knowledge about esters
ppr?d- the formula of an acid is either of the type HY or H2Y.How could you find out which one is correct by using Aq.solutions of the acid and of sodium hydroxide. Assume that both solutions have the same concentration, 0.1 mol/dm3
please help!
Mg2+ + H2SO4 = MgSO4 + 2H+how to write the ionic equation for this
reaction between magnesium and sulphuric acid
but this is the normal equation ig uess :/Mg2+ + H2SO4 = MgSO4 + 2H+
guess dat's it
i think you find it out by titration, using an indicator and comparing the volumes of acid used to neutralize lets say 25cm3 of NaOHd- the formula of an acid is either of the type HY or H2Y.How could you find out which one is correct by using Aq.solutions of the acid and of sodium hydroxide. Assume that both solutions have the same concentration, 0.1 mol/dm3
please help!
O/N 2000 q5ppr?
how to write the ionic equation for this
reaction between magnesium and sulphuric acid
sorry, link plz?O/N 2000 q5
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