11.6 Carboxylic Acid — Chemistry STD 10 — Question

Give balanced equation for the following conversation:
A nitride of a trivalent metal to ammonia.

What type of reaction is common to both of these compounds?

What should be the physical state of lead bromide if it is to conduct electricity?

Explain why:
Only all-glass apparatus should be used for the preparation of nitric acid by heating concentrated sulphuric acid and potassium nitrate.

Name the following:
Acid used to extract glue from bones.

Name : A base which is not alkali

For the reaction of a metal oxide. Suggest a reducing agent other than carbon

A given white crystalline salt was tested as follows: A flame test on the salt gave a persistent golden-yellow colourisation. What conclusions can be drawn for the observation?

The following table shows the tests a student performed on four different aqueous solutions which are X,Y,Z and W. Based on the observations provided, Identify the cation present

Chemical Test	Observation	Conclusion
To Solution X, ammonium hydroxide is added in minium quantity first and then in excess	A dirty white precipitate is formed which dissolves in excess to form a clear solution	(i)
To Solution Y, ammonium hydroxide is added in minimum quantity first and then in excess	A pale blue precipitate is formed which dissolves in excess to form a clear inky blue solution	(ii)
To solution W, A small quantity of sodium hydroxide solution is added and then in excess	A white precipitate is formed which remains insoluble	(iii)
To a salt Z, calcium hydroxide solution is added and then heated	A pungent smelling gas turning moist red litmus paper blue is obtained	(iv)