GENERAL KNOWLEDGE

GK

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In this equation, CuCl2 + NaOH
A
copper(II) hydroxide
B
sodium chloride
C
sodium hydroxide
D
copper(II) chloride
Explanation: 

Detailed explanation-1: -Copper(II) hydroxide Cu ( OH ) 2 and sodium chloride are formed when copper chloride solution reacts with an aqueous of sodium hydroxide solution. This reaction is considered as a double displacement reaction.

Detailed explanation-2: -Copper chloride and sodium hydroxide react and one of the products is precipitation.

Detailed explanation-3: -Therefore, CuSO 4 Copper sulphate + 2 NaOH Sodium hydroxide → Cu ( OH ) 2 Copper hydroxide + Na 2 SO 4 Sodium sulphate is a Double displacement reaction.

Detailed explanation-4: -Copper sulphate reacts with sodium hydroxide to form a blue precipitate of copper hydroxide and sodium sulphate.

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