Study the information in the table below and answer the questions that follow. i) Write the general formula of the hydrocarbons in the table.

Chemistry
Study the information in the table below and answer the questions that follow. i) Write the general formula of the hydrocarbons in the table.

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Answer

CnH2nC_n H_{2n}

Huu hapa ni utatuzi wa swali lako la 18 (i):

18) Jifunze habari katika jedwali hapa chini na ujibu maswali yanayofuata.

| Number of carbon atoms per molecule | Relative molecular mass of the hydrocarbon | |-------------------------------------|--------------------------------------------| | 2 | 28 | | 3 | 42 | | 4 | 56 |

Tunajua kwamba: Relative atomic mass ya Carbon (C) = 12 Relative atomic mass ya Hydrogen (H) = 1

i) Andika fomula ya jumla ya haidrokaboni kwenye jedwali.

  • Step 1: Pata fomula ya molekuli kwa kila haidrokaboni. Kwa haidrokaboni yenye atomi nn za kaboni na atomi xx za hidrojeni, fomula ya molekuli ni CnHxC_n H_x. Uzito wa molekuli ni (n×12)+(x×1)(n \times 12) + (x \times 1).

    • Kwa n=2n=2 (uzito wa molekuli = 28): (2×12)+x=28(2 \times 12) + x = 28 24+x=2824 + x = 28 x=4x = 4 Fomula ya molekuli ni C2H4C_2 H_4.

    • Kwa n=3n=3 (uzito wa molekuli = 42): (3×12)+x=42(3 \times 12) + x = 42 36+x=4236 + x = 42 x=6x = 6 Fomula ya molekuli ni C3H6C_3 H_6.

    • Kwa n=4n=4 (uzito wa molekuli = 56): (4×12)+x=56(4 \times 12) + x = 56 48+x=5648 + x = 56 x=8x = 8 Fomula ya molekuli ni C4H8C_4 H_8.

  • Step 2: Tambua uhusiano kati ya idadi ya atomi za kaboni (nn) na hidrojeni (xx). Kutoka kwa fomula za molekuli zilizopatikana: Kwa C2H4C_2 H_4, x=2×nx = 2 \times n (yaani, 4=2×24 = 2 \times 2). Kwa C3H6C_3 H_6, x=2×nx = 2 \times n (yaani, 6=2×36 = 2 \times 3). Kwa C4H8C_4 H_8, x=2×nx = 2 \times n (yaani, 8=2×48 = 2 \times 4). Uhusiano ni kwamba idadi ya atomi za hidrojeni (xx) ni mara mbili ya idadi ya atomi za kaboni (nn).

  • Step 3: Andika fomula ya jumla. Kutokana na uhusiano x=2nx = 2n, fomula ya jumla ya haidrokaboni hizi ni CnH2nC_n H_{2n}. Fomula ya jumla ya haidrokaboni kwenye jedwali ni CnH2n\boxed{C_n H_{2n}}.

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Huu hapa ni utatuzi wa swali lako la 18 (i): 18) Jifunze habari katika jedwali hapa chini na ujibu maswali yanayofuata.

Study the information in the table below and answer the questions that follow. i) Write the general formula of the hydrocarbons in the table.
Chemistry

This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.

ScanSolve AI Answer
Huu hapa ni utatuzi wa swali lako la 18 (i): 18) Jifunze habari katika jedwali hapa chini na ujibu maswali yanayofuata. | Number of carbon atoms per molecule | Relative molecular mass of the hydrocarbon | |-------------------------------------|--------------------------------------------| | 2 | 28 | | 3 | 42 | | 4 | 56 | Tunajua kwamba: Relative atomic mass ya Carbon (C) = 12 Relative atomic mass ya Hydrogen (H) = 1 i) Andika fomula ya jumla ya haidrokaboni kwenye jedwali. Step 1: Pata fomula ya molekuli kwa kila haidrokaboni. Kwa haidrokaboni yenye atomi n za kaboni na atomi x za hidrojeni, fomula ya molekuli ni C_n H_x. Uzito wa molekuli ni (n × 12) + (x × 1). Kwa n=2 (uzito wa molekuli = 28): (2 × 12) + x = 28 24 + x = 28 x = 4 Fomula ya molekuli ni C_2 H_4. Kwa n=3 (uzito wa molekuli = 42): (3 × 12) + x = 42 36 + x = 42 x = 6 Fomula ya molekuli ni C_3 H_6. Kwa n=4 (uzito wa molekuli = 56): (4 × 12) + x = 56 48 + x = 56 x = 8 Fomula ya molekuli ni C_4 H_8. Step 2: Tambua uhusiano kati ya idadi ya atomi za kaboni (n) na hidrojeni (x). Kutoka kwa fomula za molekuli zilizopatikana: Kwa C_2 H_4, x = 2 × n (yaani, 4 = 2 × 2). Kwa C_3 H_6, x = 2 × n (yaani, 6 = 2 × 3). Kwa C_4 H_8, x = 2 × n (yaani, 8 = 2 × 4). Uhusiano ni kwamba idadi ya atomi za hidrojeni (x) ni mara mbili ya idadi ya atomi za kaboni (n). Step 3: Andika fomula ya jumla. Kutokana na uhusiano x = 2n, fomula ya jumla ya haidrokaboni hizi ni C_n H_2n. Fomula ya jumla ya haidrokaboni kwenye jedwali ni C_n H_2n. Last free one today — make it count tomorrow, or type /upgrade for unlimited.