The carbonate of metal M has the formula M2CO3. This metal carbonate reacts with hydrochloric acid as shown in the equation: M2CO3 + 2HCI → 2MCI + CO2 + H2O A sample of M2CO3, of mass 0.249 g, required the addition of 27.0 cm³ of a 0.250 mol dm-3 solution of hydrochloric acid for complete reaction. a) Calculate the number of moles of hydrochloric acid used in the titration. b) Therefore, deduce the number of moles of M2CO3. the Mr of M2CO3.Give your answer to one decimal place. c) Calculate d) Suggest the identity of M. e) Give a reason why methyl orange is a suitable indicator for this titration. f) Hydrogen can be made by the reaction of hydrochloric acid with metal M as shown in the equation: 2HCI + 2M 2MCI + H2 What mass of hydrogen is formed when 200cm³ of hydrochloric acid of concentration 4.5 mol dm-3 reacts with an excess of metal M?

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The carbonate of metal M has the formula M2CO3. This metal carbonate reacts
with hydrochloric acid as shown in the equation:
M2CO3 + 2HCI → 2MCI + CO2 + H2O
A sample of M2CO3, of mass 0.249 g, required the addition of 27.0 cm3 of a
0.250 mol dm-3 solution of hydrochloric acid for complete reaction.
a)
Calculate the number of moles of hydrochloric acid used in the titration.
b)
Therefore, deduce the number of moles of M2CO3.
c)
Calculate
the Mr of M2CO3.Give your answer to one decimal place.
Suggest the identity of M.
e)
Give a reason why methyl orange is a suitable indicator for this titration.
d)
f) Hydrogen can be made by the reaction of hydrochloric acid with metal M as
shown in the equation:
2HCI + 2M → 2MCI + H2
What mass of hydrogen is formed when 200cm3 of hydrochloric
acid of concentration 4.5 mol dm-3 reacts with an excess of metal
M?
Transcribed Image Text:The carbonate of metal M has the formula M2CO3. This metal carbonate reacts with hydrochloric acid as shown in the equation: M2CO3 + 2HCI → 2MCI + CO2 + H2O A sample of M2CO3, of mass 0.249 g, required the addition of 27.0 cm3 of a 0.250 mol dm-3 solution of hydrochloric acid for complete reaction. a) Calculate the number of moles of hydrochloric acid used in the titration. b) Therefore, deduce the number of moles of M2CO3. c) Calculate the Mr of M2CO3.Give your answer to one decimal place. Suggest the identity of M. e) Give a reason why methyl orange is a suitable indicator for this titration. d) f) Hydrogen can be made by the reaction of hydrochloric acid with metal M as shown in the equation: 2HCI + 2M → 2MCI + H2 What mass of hydrogen is formed when 200cm3 of hydrochloric acid of concentration 4.5 mol dm-3 reacts with an excess of metal M?
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