Asked by Liz

which of the following occurs when a sample of 0.1M HNO3 is tested?
a) phenolphthalein turns pink
b) bromthymol blue turns yellow
c) Ca9s) reacts and produces CO2 (g)
d) Na (s) reacts and rpoduces NO2 (g)
Answered by DrBob222
I believe bromthymol blue will turn yellow with HNO2. I can't read c. Both a and d are false.
Answered by Liz
c) Ca (s) reacts and produces Co2(g)

Can you explain to me why it's b please?
Answered by Liz
Nevermind, I think I understand it now.
Thanks.