Date:Page10,2 gram of magnesiome is burst in a closedvessel containing

1.	Date:Page10,2 gram of magnesiome is burst in a closedvessel containing 1.29 gram of oxygen to producemagnesium oxide.i) Find the limiting reagent .ii)Calculate the number ofmolecules of unreacted reagent left over.iii) What mass of Mgo is produced.IV) How many grams of pure HCL are required to neutralize whole MgO produced.
Answer» Answer: ANSWER Balanced reaction is: 2Mg+O 2 →2MgO According to the reaction 2 mol (or 2×24.3=48.6g) Mg reacts with 32 g oxygen. 1 g of Mg requires = 48.6 32 =0.66g oxygen but GIVEN oxygen is 0.5 g ∴ oxygen is the LIMITING reagent 0.5 g oxygen can burn == 32 48.6 ×0.5=0.75g Mg Excess of Mg left =1−0.75=0.25g please follow me or thanks me please

Date:Page10,2 gram of magnesiome is burst in a closedvessel containing 1.29 gram of oxygen to producemagnesium oxide.i) Find the limiting reagent .ii)Calculate the number ofmolecules of unreacted reagent left over.iii) What mass of Mgo is produced.IV) How many grams of pure HCL are required to neutralize whole MgO produced.

Answer»

Answer:

ANSWER

Balanced reaction is:

2Mg+O

→2MgO

According to the reaction 2 mol (or 2×24.3=48.6g) Mg reacts with 32 g oxygen. 1 g of Mg requires =

48.6

=0.66g oxygen but GIVEN oxygen is 0.5 g ∴ oxygen is the LIMITING reagent

0.5 g oxygen can burn ==

48.6

×0.5=0.75g Mg

Excess of Mg left =1−0.75=0.25g

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