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Novah
Questions (9)
to make an acid buffer of pH 5, what will be the ratio of salt to acid in the solution.
[Ka= 1.8x10^-5 mol.dm^3]
0 answers
398 views
pure phosphene gas 3x10^-2 mol was placed in a 1.5L container. it was heated to 800K. at equilibrium the pressure of CO was
0 answers
493 views
at 298K,the vapour of pure water is 23.76mmHg and that of dilute aqueous ultimate urea is 22.9mmHg. Estimate the molarity of the
1 answer
639 views
suppose 2.5x10^4g of nitrogen gas and 5x10^5g of hydrogen are mixed and reacted to form ammonia, what is the excess reagent
0 answers
484 views
the equilibrium constant for the reaction N2 + H2 <---> 2NH3 at 700K is 12. calculate the amount of NH3 if the reaction started
0 answers
501 views
7.62g of Fe are allowed to react with 8.67g of S to form brown black iron(III) sulphide at high temp. what is the limiting
0 answers
582 views
if 2.70 moles of C2H2 is reacted with 6.30moles of O2, calculate the moles of water produced
0 answers
412 views
in the reaction:
Cl2 + 2HBr ----> 2HCl + Br2 identify the reduced specie
0 answers
907 views
acetylene gas is produced by adding water to calcium carbide as follows;
CaC2 + H2O ---> C2H2 + Ca(OH)2. how many gram of
0 answers
833 views
