Calculate the mass of sodium hydroxide in a solution of 150 ml if 10.36 ml of sulfuric acid titrant (c1/zT) = 0.103 mol/l is used to titrate an aliquot part of a solution of this substance with a volume of 15.0 ml. Write: a) reaction scheme; b) factors of equivalence of participants of reaction; c) the expression of the law of equivalents for this reaction; d) type of chemical reaction (titration method); e) indicator for determination of equivalence point (choice to explac)