c) Name the kind of particles solution:
i) sodium hydroxide solution
ii) carbonic acid
iii) sugar solution
An element Z has atomic number 16. Answer the following question on Z:
i) State the period and group to which Z belongs.
ii) is Z a metal or non-metal?
iii) State the formula between Z and Hydrogen.
iv) What kind of a compound is this?
Z is the atomic number then, Z=16 = 2,8,6
i) Period number =3 Group Number =VI A /16
ii) Z is Non-Metal.
iii) Z’s valency =-2 H=+1 so formula H2Z
iv) Polar covalent compounds
Draw the structure of the stable positive ion formed when an acid dissolves in water.
State the inference drawn from the following observations:
(iii) pH of liquid R is 10. What kind of substance is R?
(iv) Salt S is prepared by reacting dilute sulphuric acid wit copper oxide. Identify S.
Give balanced chemical equations to prepare the following salts:
Lead sulphate from lead carbonate.
Give balanced chemical equations to prepare the following salts:
Sodium sulphate using dilute sulphuric acid.
Give balanced chemical equations to prepare the following salts:
Copper chloride using copper carbonate.
Distinguish between the following pairs of compound using the test given within brackets:
Iron(II) sulphate and iron(III) sulphate (using ammonium hydroxide)
State your observation in the following case:
When excess sodium hydroxide is added to calcium nitrate solution.