In chemistry, the ph of an aqueous solution is a measure of its acidity. for this specific problem, the ph scale ranges from 0 to 14 and are entered in as integers, inclusive. a solution with a ph greater than 7 is basic, and a solution with a ph less than 7 is acidic. it is neutral when ph = 7 write your code using if and else assign ph = 'acidic' if phval < 7 assign ph = 'basic' if phval > 7 assign ph = 'neutral' if phval = 7 assign ph = 'invalid' if phval is not in the range of 0 to 14 the usage of switch statement is mandatory. elseif clause is not permitted write a function ph_switch with input argument phval and output argument ph