Which of the following statements is correct?
a.
red litmus paper turns blue when placed in a base.
b.
red litmus paper stays red when placed in a base.
c.
blue litmus paper stays blue when placed in an acid.
d.
blue litmus paper turns red when placed in a base.

At a certain temperature the rate of this reaction is first order in hi with a rate constant of : 0.0632s2hig=h2g+i2g suppose a vessel contains hi at a concentration of 1.28m . calculate how long it takes for the concentration of hi to decrease to 17.0% of its initial value. you may assume no other reaction is important. round your answer to 2 significant digits.