19-the ans is 40 tonnes since of u look closely,2 mol of NH
3 give 1 mol of ammonium nitrate. 17 tonnes makes 1 mol of ammonia,so 0.5 mol of ammonium nitrate will be there. mass=mol. x M
r ,so 0.5 x 80= 40 tonnes.
21.increasing pressure. reaction would move in the 4ward direction since the ratio of volumes is 4:2,more ammonia would be obtained and by increasing pressure, the frequency of effective collisions would also increase,thus the rate will be higher.
22.lowering the temp...slope of exp.2 is not as steep as 1. change in type or amount of catalyst is pointless since catalysts are not used up. B would give a smaller volume of oxygen.
25. A is the correct option.it is a neutralisation reaction and neutralisation AND precipitation reactions are non-redox
26.C. magnesium sulphate would form which is soluble.
33. C. silica is a non-metal,so its oxide will be acidic. no redox occurs since its oxidation state remains +4.
36. D. from acids,we always take away -OH and from alcohols we take H. cut these radicals from both sides of the monomers and u'll see.
37. i'm not sure,but i think it is ammonia. hydrogen does react. water also does,as in making alcohols,and bromine also reacts as in testing for unsaturation.
38. A. this is a fact. u'll know better if u've studied biology.
hope this helps
