हिंदी

1.56 g of sodium peroxide reacts with water according to the following equation: 2NaA2OA2+2HA2O⟶4NaOH+OA2 Calculate the mass of sodium hydroxide formed. - Chemistry

Advertisements
Advertisements

प्रश्न

1.56 g of sodium peroxide reacts with water according to the following equation:

2NaA2OA2+2HA2O4NaOH+OA2

Calculate the mass of sodium hydroxide formed.

संख्यात्मक

उत्तर

Mol. Mass of Na2O2 = 2 23 + 2 16 = 78 g

Mass of 2Na2O2= 156 g

156 g Na2Ogives = 160 g of NaOH

So, 1.56 Na2O2 forms NaOH = 160156×1.56

= 1.6 g

shaalaa.com
Numerical Problems of Chemical Equation
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 5: Mole concept and Stoichiometry - Exercise 5D [पृष्ठ ९४]

APPEARS IN

सेलिना Concise Chemistry [English] Class 10 ICSE
अध्याय 5 Mole concept and Stoichiometry
Exercise 5D | Q 8 | पृष्ठ ९४

संबंधित प्रश्न

Solve the following:

What volume of oxygen is required to burn completely 90 dm3 of butane under similar conditions of temperature and pressure?

2CA4HA10+13OA28COA2+10HA2O


The equation 4NH35O→ 4NO + 6H2O represents the catalytic oxidation of ammonia. If 100 cm3of ammonia is used, calculate the volume of oxygen required to oxidise the ammonia completely.


How much calcium oxide is formed when 82g of calcium nitrate is heated? Also find the volume of nitrogen dioxide evolved:
2Ca(NO3)2→ 2CaO + 4NO2 + O2 (Ca = 40,N = 14, O = 16)


The ratio between the number of molecules in 2g of hydrogen and 32 g of oxygen is
[Given that H=1,O=16]


Find the mass of KNO3 required to produce 126 kg of nitric acid. Find whether a larger or smaller mass of NaNO3 is required for the same purpose.

KNOA3+HA2SOA4KHSOA4+HNOA3

NaNOA3+HA2SOA4NaHSOA4+HNOA3


Concentrated nitric acid oxidizes phosphorus to phosphoric acid according to the following equation:

P+5HNOA3HA3POA4+5NOA2+HA2O

If 6.2 g of phosphorus was used in the reaction, calculate the number of moles of phosphorus taken and mass of phosphoric acid formed.


560 ml of carbon monoxide is mixed with 500 ml of oxygen and ignited. The chemical equation for the reaction is as follows:

2CO+OA22COA2

Calculate the volume of oxygen used and carbon dioxide formed in the above reaction.


66g of ammonium sulphate is produced by the action of ammonia on sulphuric acid. Write a balanced equation and calculate the mass of acid required.


Pure calcium carbonate and dilute hydrochloric acid are reacted and 2 litres of carbon dioxide were collected at 27°C and normal pressure.

CaCOA3+2HClCaClA2+HA2O+COA2

Calculate the mass of the acid required.


Concentrated nitric acid oxidizes phosphorus to phosphoric acid according to the following equation:

P+5HNOA3HA3POA4+5NOA2+HA2O

If 6.2 g of phosphorus was used in the reaction, calculate the volume of steam produced at the same time if measured at 760 mm Hg pressure and 273°C.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×
Our website is made possible by ad-free subscriptions or displaying online advertisements to our visitors.
If you don't like ads you can support us by buying an ad-free subscription or please consider supporting us by disabling your ad blocker. Thank you.