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प्रश्न
Complete and balance the equation:
Conversion of hydrogen to -
Water - 2H2 + O2 → ________
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उत्तर
Water - 2H2 + O2 → 2H2O
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संबंधित प्रश्न
Discuss the occurrence of hydrogen in the universe and on the earth ?
Describe two chemical properties of hydrogen with equations.
Hydrogen is evolved when dilute HCl reacts with magnesium, but nothing happens in the case of mercury and silver. Explain.
Choose terms from the options given in brackets to complete this sentence.
Hydrogen is ………………… soluble in water.
(sparingly, highly, moderately)
With reference to the uses of hydrogen, give reason for the following:
Reaction of hydrogen with nitrogen under specific conditions finds industrial utility.
Complete and balance the equation:
Conversion of hydrogen to -
Hydrogen sulphide - H2 + S → ________
Place the metals calcium, iron, magnesium and sodium in order of their activity with water, placing the most active first. Write the equation for each of the above metals which react with Water.
Why is copper not used to prepare hydrogen by the action of dilute hydrochloric acid or dilute sulphuric acid on the metal, [copper [Cu] below hydrogen – no reaction]
State the use of hydrogen –
In hydrogenation of oil and coal
State the use of hydrogen –
In the extraction of metals
