(a) (i) Simplify the set [(B - A) U A']'. (3)
(ii) Given the subsets A = [-2,6), B = (-5,3), C = (-1,8) of the set of real
numbers R, find the set AU (B'UC)'.
(
4)
(b) (i) Express (1 + vz) in the form a + bv2, where a and b are integers.
(ii) Express
V2
in the form p + qv2, where p and q are rational numbers.
(1+V2)2
(©) (1) Express 2.534 in the form where p and q are integers and q * 0, in its
a
(3)
lowest terms.
(3)
(ii) Simplify 5V6 - 2724 + V294.​

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.

answer: option (a) is the correct answer.

explanation:

the measurement of hydrogen ions in a solution is known as ph.

if ph of a solution is less than 7 then the solution is acidic. if ph of a solution is greater than 7 then the solution is basic.

when the ph of a solution equals 7, then the solution is considered as neutral.

the ph of pure water is 7, therefore, it means that concentration of hydronium ions equals that of hydroxide ions.