Write down the name and molecular formula of a compound which gives hydrogen ions and sulphate ions in solution state. In which color is the methyl orange changed after treating it with this compound? Why?Write the name of the salt when the same compound is treated with sodium hydroxide. write down the chemical equation?? Answer it as fast as you can

1.)The names and molecular formula of compounds which gives hydrogen ions is sulfuric acid (h2so4)which gives sulphate ions is sodium sulphate (NaoH).

2) In the yellow colour methyl orange is changed after treating with this compound because methyl orange moves from the colour red to orange and finally yellow.

i think   the answer is c hope i'm right

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.