Page 18 - E-Science Prep1 2024-2025 t2 Unit1_Neat - Copy
P. 18
It can differentiate between acids & alkalis or
between different acids or different alkalis
according to their strength.
In the form of strips / dye (solution)
Test for acidity / basicity of gases Indicators generally act in
aqueous medium only.
Indicator strips have to be wet to be able to test gases to dissolve
them in water.
General indicators for gases tAhecibdliuceglaitsmesus(CsOtri2p) change
into red
Basic gases r(eNdHli3tammums sotnriipa)
change the
into blue
OG2a)sdeooounf s'tthecelheiamnndeginectasttho(eHr c2o, Nlo2r
except tChel2croelmorovoefsb/oth
bleaches
33
Second Term
