Select the correct formula of Aluminium Sulphate.
Al2(SO4)3
Aluminium forms the Al3+ ion and the sulphate ion is SO42-.
To balance the charges, the positive charge from two aluminium ions (2 × 3 = 6) must equal the negative charge from three sulphate ions (3 × 2 = 6).
This gives two Al and three SO4 groups, so the formula is Al2(SO4)3.
Hence, the correct formula of Aluminium Sulphate is Al2(SO4)3.
Which of the following substances is considered neutral according to the pH scale?
Which of the following pair is correct?
I. Isotopes – different mass numbers
II. Isobars – different atomic numbers
Which of the following is a zone of a flame?
I. Dark
II. Luminous
III. Non-Luminous
If formula of sodium salt of an anion X is \(Na_2X\) , then the formula of its aluminium salt would be
Which of the following set contains same number of molecules?
A. 1 gram O 2, 2 grams SO 2
B. 1 gram CO 2, 1 gram N 2O
C. 1 gram O 2, 1 gram O 3
The volume of CO 2liberated at STP when 10 gm of 90% pure limestone strongly heated is