Classify the chemical reaction shown here: Mg + H2SO4 → MgSO4 + H2

Chemistry

2 answers:

MariettaO [177]3 years ago

8 0

Answer:

Single Displacement Reaction

Explanation:

Chemical reactions are broadly classified as:

1) Synthesis which involves combination of 2 or more reactants to form a single product

2) Decomposition which involves the breakdown of a complex reactant into two or more simpler products

3) Single displacement reaction which involves displacement of a more reactive element from a less reactive element in a compound

4) Double displacement involves exchange of ions between 2 salts

The given reaction is:

Mg + H2SO4 → MgSO4 + H2

Here Mg is more reactive and displaces H from H2SO4 forming MgSO4. This is an example of a single displacement reaction

Alexandra [31]3 years ago

5 0

The chemical reaction for Magnesium (Mg) in Sulfuric acid (H2SO4) is given by the equation:

Mg + H2SO4 ---> MgSO4 + H2 gas.

The products of this reaction are Magnesium Sulfate (MgSO4, a salt) and elemental Hydrogen (H2, a gas), as shown in the equation.

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Nitrogen combines with oxygen to form nitrogen monoxide (no) and nitrogen dioxide (no2). a sample of no consists of 1.14 g of ox

Sever21 [200]

2N2 + 3O2 ---> 2NO + 2NO2
You should do it based on moles and not grams.
1.14 g O = 0.071 moles O
1 g N = 0.071 moles N
So in NO2 you need 2 moles O for each mole of N
1 g N = 0.071 moles, so you need 0.071 x 2 moles of O = 0.0.142 moles O
0.142 moles O x 16 g/mol = 2.27 grams of O. So, you are actually correct because your answer is 2.28 grams. I just prefer to work it out in moles so it makes perfect chemical sense.

4 0

3 years ago

Read 2 more answers

An organic compound absorbs strongly in the IR at 1687 cm1. Its 'H NMR spectrum consists of two signals, a singlet at 2.1 ppm an

tatuchka [14]

This question does not contain the structures of the molecules. The structures in Daylight SMILES format are:

I. C1=CC=CC=C1C(=O)C

II. C1=CC=CC=C1CC=O

III. C1=CC(C)=CC=C1C=O

IV. C1=CC=CC=C1CCC

V. C1=CC=CC=C1C(C)C

The structures are also attached

Answer:

The structure of compound IV is consistent with the information obtained analysis

Proposed structures for the ions with m/z values of 120, 105,77 and 43 are (also attached):

C1=CC=CC=C1C(=[OH0+])C |^1:7|

C1C([CH0+]=O)=CC=CC=1

C1[CH0+]=CC=CC=1

C(#[OH0+])C

respectively

Explanation:

The IR peak at 1687 cm⁻¹ is indicative of an α unsaturated carbonyl carbon. While the 1H NMR singlet is of the methyl group next to carbonyl and the multiplet near 7.1 ppm is a characteristic peak of benzene. This data shows points towards structure I.

Mass spectrum peak at 120 m/z is of molecular ion peak. In the case of carbonyl-containing molecule, this peak is observable. The signal at 105 shows the loss of a methyl group next to the carbonyl. m/z value of 77 is the characteristic cationic peak of benzene, while the peak at 43 infers the formation of acylium ion (RCO+) due to α-cleavage. All this data agrees with the structure of acetophenone (Structure 1)