Advertisements
Advertisements
Question
State whether a sample of the following would increase or decrease in a mass if exposed to air.
Solid Na2CO3 .10H2O
Solution
Mass decreases due to efflorescence.
APPEARS IN
RELATED QUESTIONS
Define deliquescence.
Explain clearly how conc, H2SO4 is used as dehydrating as well as drying agent.
Give reason for the following:
Sodium hydrogen sulphate is not an acid but it dissolves in water to give hydrogen ions, according to the equation
\[\ce{NaHSO4 <=> H+ + Na+ + SO^2-_4}\]
State whether a sample of the following would increase or decrease in a mass if exposed to air.
Solid NaOH.
State whether a sample of the following would increase or decrease in a mass if exposed to air.
Solid CaCI2
Why does common salt get wet during the rainy season?
Name a substance which changes the blue colour of copper sulphate crystals to white.
Answer the question below:
What name is given to the water in the compound copper sulphate-5-water?
Answer the question below:
If copper sulphate-5-water is heated, anhydrous copper sulphate is formed. What is its colour?
Select the correct answer from A, B, C, D and E.
A deliquescent compound.
